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10 Best Error Monitoring Tools of 2026

This list is for developers and engineering leads who want to catch exceptions and crashes in production before users report them. It covers dedicated error trackers (Sentry, Honeybadger, Rollbar, BugSnag, Raygun, Airbrake), error tracking inside observability platforms (Datadog, New Relic), and tools that tie errors to user sessions (PostHog, LogRocket). We compared documented features and published prices for 10 tools. Scores weigh features at 40%, ease of use at 30% and value at 30%.

By the Mojolin research desk · Updated November 9, 2026 · 10 tools compared · Prices checked on vendor pages, latest November 9, 2026

Questions or corrections: editorial@mojolin.com

Mojolin is self-funded How we score

Sentry is our top pick for most teams: it pairs detailed stack traces, suspect commits and Release Health with SDKs for nearly every stack, a free plan for one developer and a Team plan with unlimited users at $26 per month billed annually. Honeybadger is the runner-up for small web teams, since its $26 Team plan covers 50K errors plus uptime monitors and a status page. Rollbar is the cheapest paid entry at $9 per month with unlimited seats. Teams already on Datadog or New Relic should start with the error tracking they already have, and product teams on PostHog get 100K exceptions free each month with session replay attached.

Top picks

Best overall

Sentry

9.1 / 10

Development teams of any size that want the most complete error tracking across web, mobile and backend code.

Read the review →

Runner-up

Honeybadger

9.0 / 10

Small teams and Ruby, PHP, Elixir, Python and JavaScript shops that want errors, uptime and status pages on one simple bill.

Read the review →

Also great

Rollbar

8.9 / 10

Teams that want low entry pricing and unlimited users with error volume as the only cost driver.

Read the review →

Comparison table

#ToolPricingScore
1SentryFree Developer plan for one user with 5k errors; Team from $26 per month billed annually with 50k errors and unlimited users9.1
2HoneybadgerFree Developer plan with 5,000 errors per month; Team from $26 per month with 50K errors and unlimited users9.0
3RollbarFree plan with 5,000 occurrences per month; Essentials from $9 per month for 10,000 occurrences8.9
4PostHog Error Tracking100K exceptions free every month; pay as you go beyond the free tier with per-exception rates8.7
5BugSnagSee vendor pricing (USD check pending)8.5
6RaygunCrash Reporting Basic from $40 per 100,000 errors per month billed annually, or $60 monthly; 14-day free trial8.3
7Datadog Error Tracking$25 per month for the first 50k errors billed annually ($30 month-to-month), then tiered per 1k errors8.2
8New Relic Errors InboxFree tier with 100 GB of data ingest per month and one full platform user; Standard from $10 for the first full platform user8.1
9LogRocketFree plan with 1,000 sessions per month; Core from $83 per month for 10,000 sessions billed annually8.0
10AirbrakePaid plans from $19 per month for 25,000 errors, or from $17 per month billed yearly; free trial with a credit card7.9

Scoring weights

Every tool gets three editorial scores out of 10, from vendor documentation, product pages and the published price. The overall score is the weighted average below, the same method on every list. Full method

Features40%
Ease of use30%
Value30%

The full ranking

  1. Rank 1 · Best overall

    Sentry

    Error monitoring and application observability platform with stack traces, release health, session replay and the Seer AI debugging agent.

    sentry.io

    9.1

    out of 10

    Best for: Development teams of any size that want the most complete error tracking across web, mobile and backend code.

    Sentry is the broadest error monitoring product on this list. Each error arrives with a full stack trace, local variables, breadcrumbs of the events leading up to it and a count of the real users affected. Sentry can auto-assign an issue to whoever committed the suspect code and alert Slack when an error first appears, regresses or escalates. Release Health tracks crash-free sessions, version adoption and failure rate, so a bad deploy shows up within minutes.

    The free Developer plan covers one user with 5k errors, 5M spans, 5GB of logs and 50 session replays. Team costs $26 per month billed annually and adds unlimited users, 50k errors, API and third-party integrations and 20 dashboards. Business at $80 adds unlimited dashboards, advanced quota management and SAML with SCIM. The Seer AI agent for root cause analysis and fix generation is a separate subscription. The breadth means more settings to learn, but defaults are sensible.

    Standout feature

    Release Health shows crash-free sessions and failure rate for each version, so a degrading release is visible right away.

    Use cases

    • Full-stack teams

      Get a Slack alert when a new error appears after a deploy

      Outcome: A regression is caught and assigned before users file tickets

    • Mobile developers

      Watch crash-free sessions by release

      Outcome: A faulty app version is spotted early in a staged rollout

    • Solo developers

      Monitor a side project on the free Developer plan

      Outcome: Production errors with stack traces at no cost

    Key features

    • Stack traces with local variables, breadcrumbs and user impact for every error
    • Release Health with crash-free sessions, version adoption and failure rate
    • Suspect commits and auto-assignment to the developer who committed the broken code
    • Session replay, tracing, logs, uptime and cron monitoring on the same plans
    • Seer AI debugging agent for root cause analysis and fix generation, sold as a subscription

    Pros

    • Free Developer plan includes error monitoring and tracing for one user
    • Team plan adds unlimited users for $26 per month billed annually
    • SDKs and setup guides for JavaScript, Python, Android, Swift.NET, Go, PHP and many frameworks

    Cons

    • The free plan is limited to one user and 5k errors
    • Seer AI debugging costs extra on top of the plan
    • SAML, SCIM and advanced quota management need the $80 Business plan
  2. Rank 2 · Runner-up

    Honeybadger

    Developer-focused monitoring that combines error tracking, logging and performance insights, uptime and cron monitoring, and status pages.

    honeybadger.io

    9.0

    out of 10

    Best for: Small teams and Ruby, PHP, Elixir, Python and JavaScript shops that want errors, uptime and status pages on one simple bill.

    Honeybadger is built for developers who want production errors handled without a large observability bill. It groups duplicate errors automatically, alerts the team at once, and shows logs, breadcrumbs and a backtrace that lead straight to the failing line of code. Hotspots, affected users and tags help sort the backlog, and setup is a few terminal commands for Rails, Laravel, Phoenix, Django and Node.js.

    The Developer plan is free forever with 5,000 errors a month, 50 MB per day of performance and log data, one uptime monitor and one status page. Team costs $26 per month and raises errors to 50K, adds unlimited users, five uptime monitors and collaboration features. Business at $80 per month adds enterprise security and compliance. Premium integrations such as Jira, PagerDuty, SMS and webhooks sit on paid plans. Honeybadger offers less for mobile crash reporting than the leaders, but for web backends it covers errors, uptime and status in one place.

    Standout feature

    Error tracking, uptime monitoring, cron checks and a status page come in one plan, including the free one.

    Use cases

    • Rails and Laravel teams

      Install the notifier and route new errors to Slack

      Outcome: Production exceptions reported within minutes of setup

    • Agencies

      Monitor many client apps with unlimited projects

      Outcome: One dashboard for every client site

    • Indie developers

      Pair error tracking with a free status page

      Outcome: Customers see outages without extra tooling

    Key features

    • Automatic grouping of duplicate errors with instant alerts
    • Logs, breadcrumbs and a clean backtrace that point to the failing line
    • Honeybadger Insights for performance and log data
    • Uptime, cron and heartbeat monitoring
    • Public status pages with incident history

    Pros

    • Free Developer plan with no time limit
    • Unlimited users and projects on Team
    • New accounts get a 30-day free trial

    Cons

    • Free plan allows one user
    • Premium integrations such as Jira, PagerDuty and webhooks need a paid plan
    • Fewer mobile crash reporting features than Sentry or BugSnag
  3. Rank 3 · Also great

    Rollbar

    Real-time error monitoring with intelligent grouping, deploy tracking, session replay and usage-based plans that never charge per seat.

    rollbar.com

    8.9

    out of 10

    Best for: Teams that want low entry pricing and unlimited users with error volume as the only cost driver.

    Rollbar focuses on catching production errors in real time and grouping them so a noisy bug does not bury new problems. Every plan includes stack traces, telemetry, deploy and version tracking, unlimited projects and unlimited users, and Rollbar states it never charges per seat. SDKs cover server, client and mobile platforms, and a REST API and Terraform provider are included.

    The free plan covers 5,000 occurrences and 1,000 session replays a month with 30 days of retention. Essentials starts at $9 per month for 10,000 occurrences and adds 90-day retention, fine-grained rate limiting and 4,000 AI credits. Advanced starts at $13 per month and adds adaptive alerts, SCIM, 180-day retention and Rollbar Analyze with RQL queries. Pricing steps up with volume to 50M occurrences, and the vendor publishes every step, which makes budgeting simple. Rollbar has fewer surrounding products than Sentry or Datadog, so teams that also want tracing will need another tool.

    Standout feature

    Every price step from 10,000 to 50,000,000 occurrences is published, and seats are always unlimited.

    Use cases

    • Startups

      Move from the free plan to Essentials as traffic grows

      Outcome: Longer retention and rate limiting for $9 a month

    • Platform teams

      Query error data with RQL on Advanced

      Outcome: Custom reports on error trends across services

    • Large engineering orgs

      Give every developer access without seat fees

      Outcome: Everyone can triage errors at no added cost

    Key features

    • Real-time error feed with intelligent grouping
    • Stack traces, telemetry, and deploy and version tracking
    • Session replay, with 1,000 replays a month on the free plan
    • AI credits included on Essentials and Advanced
    • Rollbar Analyze with RQL and a Metrics API on Advanced

    Pros

    • Unlimited users and projects on every plan
    • Paid plans start at $9 per month
    • 14-day trial of the Advanced feature set

    Cons

    • Free plan keeps data for 30 days
    • Adaptive alerts and SCIM need the Advanced plan
    • Session replay beyond the included amount is a paid add-on
  4. Rank 4

    PostHog Error Tracking

    Exception tracking inside PostHog's product platform, with session replay, events and user properties attached to every issue.

    posthog.com

    8.7

    out of 10

    Best for: Product engineers and startups already using PostHog analytics or replay who want errors tied to user behavior.

    PostHog Error Tracking captures exceptions across the stack and turns them into issues that can be prioritized, assigned and resolved. Its advantage is context: because PostHog already records product events, each issue comes with the affected user's session replay, events and properties, so you can watch what happened instead of trying to reproduce it. Server libraries supply code context, front-end frameworks use uploaded source maps, and the PostHog MCP lets an editor agent list issues, read stack traces and update status.

    The free tier resets monthly and includes 100K exceptions, unlimited team members, one project and 1-year retention, without a credit card. Pay-as-you-go keeps the same free allowance, adds six projects and 2-year retention, and lets you set a billing limit per product. PostHog says grouping for very high-volume exceptions is still growing, so large backend fleets may prefer a dedicated tool. For product teams already on PostHog, adding error tracking costs little.

    Standout feature

    Each issue includes the affected user's session replay, events and properties.

    Use cases

    • Product engineers

      Open the session replay attached to a new frontend exception

      Outcome: The bug is reproduced without asking the user for steps

    • Founders

      Get alerted when early users hit any exception

      Outcome: Fixes ship before churn sets in

    • Support engineers

      Look up the errors a reporting customer hit

      Outcome: Faster triage with full context for engineers

    Key features

    • Exceptions turned into issues you can prioritize, assign and resolve
    • Session replay, events and properties of the affected user attached to each issue
    • Stack traces from server libraries and uploaded source maps
    • Alerts on new issues and release tracking
    • MCP tools to triage and fix errors from Cursor, Claude Code or VS Code

    Pros

    • 100K exceptions free each month
    • Unlimited team members on the free tier
    • Billing limits per product prevent surprise charges

    Cons

    • The free tier includes one project and 1-year retention
    • PostHog notes coverage for high-volume grouping is still growing
    • Most useful when you also run PostHog analytics or replay
  5. Rank 5

    BugSnag

    Error monitoring and crash reporting for mobile, web, desktop and server apps, with a Stability center and performance monitoring.

    bugsnag.com

    8.5

    out of 10

    Best for: Mobile and consumer app teams that judge each release by stability scores.

    BugSnag is a long-standing choice for mobile and consumer app teams. It captures unhandled exceptions and crashes automatically, lets you report handled ones, and groups errors by root cause sorted by user impact. Each report carries stack traces, threads, breadcrumbs, device and user details, and BugSnag deobfuscates traces from source maps, dSYMs and ProGuard mappings. The Stability center compares stability across releases, which suits teams that gate rollouts on crash rates.

    The free plan covers one user, 7.5K events and 1M spans a month across 50+ platforms. Select adds unlimited users and end-to-end diagnostics, Preferred adds automatic error prioritization, stability benchmarks, advanced segmentation and SAML SSO, and Enterprise adds on-premises deployment and feature flag tracking. Paid prices are built from event and span packs in a calculator, and we could not confirm a USD figure from this location, so check the vendor page. BugSnag is also sold through AWS Marketplace.

    Standout feature

    The Stability center compares app stability from one release to the next.

    Use cases

    • Mobile app teams

      Compare stability between two app releases

      Outcome: A clear go or no-go signal for a wider rollout

    • Game and media apps

      Symbolicate native crashes with dSYMs and ProGuard files

      Outcome: Readable stack traces for device-specific crashes

    • AWS customers

      Subscribe through AWS Marketplace

      Outcome: Billing added to the existing AWS bill

    Key features

    • Automatic capture of unhandled errors and crashes, plus handled exceptions you report
    • Stability center to compare app stability from release to release
    • Breadcrumbs, threads, device and user info for each error
    • Symbolicated stack traces from source maps, dSYMs and ProGuard mappings
    • Performance monitoring with spans for app start, screen loads and web vitals

    Pros

    • Supports 50+ platforms and 30+ third-party integrations
    • Free plan with 7.5K events and 1M spans a month
    • Unlimited users on paid plans

    Cons

    • The free plan includes one user
    • Paid prices depend on the event and span packs you choose
    • Stability benchmarks and SAML SSO need the Preferred plan
  6. Rank 6

    Raygun

    Crash reporting, real user monitoring and APM with AI Error Resolution and unlimited apps and members on every plan.

    raygun.com

    8.3

    out of 10

    Best for: Teams that want crash reporting with AI fix suggestions and no limits on apps or team members.

    Raygun Crash Reporting gathers the full stack trace, environment, browser, version, class name and host for each error, so developers stop relying on log files and incomplete support tickets. Errors can be ordered by users affected and occurrences, filtered by many fields and tied to deployments to catch regressions. AI Error Resolution suggests root causes and fixes using prompts preloaded with the stack trace, environment and affected code.

    Basic costs $40 per 100,000 errors a month billed annually, or $60 monthly, and already includes unlimited apps, members and customer records, spike protection, deployment tracking, an audit log and the Raygun API. Team at $80 per 200,000 errors adds inbound filters, third-party integrations such as Slack, Teams, GitHub and Jira, custom dashboards and roles. Business adds SAML SSO and a dedicated account manager. There is no free plan, only a 14-day trial, and the entry price is higher than most rivals here, but the included volume is generous.

    Standout feature

    Every plan includes unlimited apps, members and customer records.

    Use cases

    • SaaS teams

      Use AI Error Resolution on an urgent production error

      Outcome: A suggested root cause and fix in minutes

    • Desktop and mobile developers

      Filter crashes by OS, version and host

      Outcome: Device-specific issues isolated quickly

    • Release managers

      Track each deployment for new errors

      Outcome: Regressions flagged as soon as they appear

    Key features

    • Full stack trace, environment, browser, version, host and class name on each error
    • AI Error Resolution with root cause and fix suggestions
    • Deployment tracking to spot new errors and regressions
    • Smart filters by date, location, version, host, OS, browser and custom tags
    • Native GitHub, Bitbucket and GitLab integrations with source map decoding

    Pros

    • Unlimited apps, members and customer records on every plan
    • Spike protection to avoid surprise usage
    • Real user monitoring and APM available from the same vendor

    Cons

    • No permanent free plan
    • Third-party integrations such as Jira start on the Team plan
    • Entry price of $40 is higher than Rollbar, Sentry or Honeybadger
  7. Rank 7

    Datadog Error Tracking

    Error tracking inside the Datadog observability platform, with automatic grouping, suspect commits and AI-powered issue classification.

    datadoghq.com

    8.2

    out of 10

    Best for: Engineering teams already on Datadog or planning to grow into full observability.

    Datadog Error Tracking groups errors into issues using stack traces, messages and runtime metadata, then alerts on new, recurring and high-volume errors. Its strength is context from the rest of Datadog: an issue can show code-level detail, logs, environment data and suspect commits, and AI-powered insights classify issues to speed up triage. SDKs cover browser, mobile and backend apps, including JavaScript, React, Android, iOS, React Native, Flutter, Roku and Electron.

    On the public price list the first 50k errors cost $25 per month billed annually, $30 month-to-month or $36 on demand, and each further 1k errors gets cheaper at higher tiers. That is competitive for teams already paying for Datadog APM or logs, because errors land in the same place as traces and dashboards. For a team that only wants error monitoring, the platform is heavier to set up and learn than Sentry or Honeybadger, and there is no free tier listed for this product.

    Standout feature

    Errors connect directly to Datadog APM, logs and real user monitoring data.

    Use cases

    • SRE teams

      Follow an error issue into the related traces and logs

      Outcome: Root cause found without switching tools

    • Mobile teams on Datadog

      Add error tracking to an existing RUM setup

      Outcome: Crashes and user sessions in one view

    • Platform engineers

      Alert on high-volume errors per service

      Outcome: Noisy regressions caught before they spread

    Key features

    • Errors grouped into issues by stack trace, message and runtime metadata
    • Real-time alerts for new, recurring and high-volume errors
    • Code-level context with logs, environment data and suspect commits
    • AI-powered insights and issue classification
    • Browser, mobile and backend SDKs, including React Native, Flutter and Roku

    Pros

    • Errors sit next to APM, logs and RUM in one platform
    • Published tiered prices that fall per 1k errors at volume
    • Supports 10+ languages and frameworks

    Cons

    • No free plan for Error Tracking on the price list
    • The wider platform takes time to learn
    • Costs add up as you adopt more Datadog products
  8. Rank 8

    New Relic Errors Inbox

    A central inbox in New Relic for triaging error groups and performance risks across APM, browser, mobile, serverless and OTel entities.

    newrelic.com

    8.1

    out of 10

    Best for: Teams on New Relic that want one place to triage errors across the full stack.

    New Relic Errors Inbox gathers errors from APM, browser, mobile, serverless and OpenTelemetry entities into one screen, so teams can detect, triage and resolve them before users file tickets. Errors are grouped, each group can be assigned or have its status changed with one click, and Slack notifications flag newly detected groups. Comments live inside the error group, which helps when backend and frontend teams share a bug. New Relic says more than 13k organizations use it.

    The free tier is perpetual, with 100 GB of data ingest a month, unlimited basic users and one full platform user. Beyond that, data costs $0.40 per GB, Standard starts at $10 for the first full platform user and $99 for each additional one up to five, and core users, who get error tracking, cost $49 each. That model is good value for teams using the whole platform, but forecasting cost for error tracking alone is harder than with per-error tools.

    Standout feature

    One inbox covers errors from APM, browser, mobile, serverless and OTel sources.

    Use cases

    • Full-stack teams on New Relic

      Triage browser and backend errors in one inbox

      Outcome: Fewer tools open during an incident

    • Engineering managers

      Assign error groups to the owning team

      Outcome: Clear ownership of every open error

    • Startups

      Monitor errors within the free 100 GB tier

      Outcome: Full-stack error visibility at no cost

    Key features

    • Errors from APM, browser, mobile, serverless and OTel entities on one screen
    • Error groups with one-click status updates and team assignment
    • Notifications in email or Slack for newly detected error groups
    • Comments and discussions kept inside each error group
    • Performance risk detection to catch issues before they become errors

    Pros

    • Perpetual free tier with 100 GB of ingest a month
    • Unlimited free basic users
    • Errors Inbox comes with the wider New Relic platform

    Cons

    • Pricing mixes users, data ingest and compute, which is harder to forecast
    • Core users with error tracking access cost $49 each
    • Standard is limited to 5 full platform users
  9. Rank 9

    LogRocket

    Session replay, product analytics and error monitoring in one platform, priced by captured sessions with unlimited error events.

    logrocket.com

    8.0

    out of 10

    Best for: Frontend and product teams that want to watch the session behind every error.

    LogRocket starts from the user session rather than the stack trace. Every plan bundles session replay, product analytics and error monitoring, and analytics events, error events, logs and network data are unlimited. When a frontend error fires, you can watch the replay of what the user did, with console and network activity, which removes much of the guesswork in reproducing UI bugs.

    Pricing follows captured sessions. The Free plan includes 1,000 sessions a month, Core starts at $83 a month for 10,000 sessions on an annual plan, and Pro, which adds Galileo AI with issue summaries, anomaly detection and MCP access, starts at $292 a month. At 250,000 sessions and up, Conditional Recording records only selected sessions to control cost. The tradeoff is that busy consumer sites pay by traffic rather than by errors, and backend exception tracking is not the focus, so many teams run LogRocket next to a backend error tracker.

    Standout feature

    Error events, analytics events and logs are unlimited on every plan, including Free.

    Use cases

    • Frontend teams

      Replay the session behind a checkout JavaScript error

      Outcome: The exact user steps and network call that failed

    • Product managers

      See how many sessions hit an error in a new flow

      Outcome: A fix prioritized by real user impact

    • Support teams

      Find a customer's session from a bug report

      Outcome: Faster answers without screen-share calls

    Key features

    • Session replay, product analytics and error monitoring on every plan
    • Unlimited analytics events, error events and logs
    • Network and log capture alongside each session
    • Galileo AI on Pro with AI issue summaries and anomaly detection
    • MCP and API access on Pro

    Pros

    • Error events are unlimited on every plan
    • Free plan with 1,000 sessions a month
    • Conditional Recording lets high-volume teams record only chosen sessions

    Cons

    • Priced by sessions, so high-traffic sites pay more
    • Galileo AI needs the Pro plan from $292 a month
    • Less focused on backend errors than dedicated trackers
  10. Rank 10

    Airbrake

    Lightweight error and performance monitoring with agentless notifiers for 50+ languages, frameworks and libraries.

    airbrake.io

    7.9

    out of 10

    Best for: Small teams that want a simple, low-overhead error tracker with deploy tracking.

    Airbrake keeps error monitoring simple. Its notifiers install in minutes, run agentless and serverless, and support more than 50 languages, frameworks and libraries, including Rails, Django, Go, Java.NET, PHP and Node.js. Each error shows how many and which users were affected, a backtrace linked to the code in your repository, the deploy it came from and, for JavaScript, breadcrumbs of the events leading up to it. Hotspots rank where errors cluster by severity.

    Monthly plans start at $19 for 25,000 errors, or $17 billed yearly. Dev covers one user, one team and unlimited projects; Basic from $38 adds unlimited users and three teams; Pro from $76 adds unlimited teams, audit logs and spike forgiveness. Error and performance data are kept for 30 days. The free trial includes unlimited errors and performance events but requires a credit card. Airbrake lacks the AI debugging and session replay that newer tools offer, so it fits teams that value a light footprint over breadth.

    Standout feature

    Agentless notifiers for 50+ languages that the vendor says have near-zero impact on app performance.

    Use cases

    • Small backend teams

      Link each error to the deploy that introduced it

      Outcome: Bad releases rolled back faster

    • Polyglot shops

      Install notifiers across Go, PHP and Python services

      Outcome: One dashboard for every language

    • JavaScript developers

      Read breadcrumbs before a browser error

      Outcome: Clear reproduction steps

    Key features

    • Backtraces linked to the matching code in your repository
    • Deploy tracking that ties errors to releases and files
    • Hotspots that show where errors are concentrated by severity
    • JavaScript breadcrumbs of the events before an error
    • Agentless, serverless notifiers for 50+ languages and frameworks

    Pros

    • Unlimited projects and integrations from the Dev plan
    • Free trial includes unlimited errors and performance events
    • Notifiers have near-zero impact on app performance, per the vendor

    Cons

    • No permanent free plan, and the trial needs a credit card
    • Dev plan allows one user
    • Fewer AI and replay features than Sentry, Rollbar or PostHog

Buying guide

How to choose

Count your errors, not your developers

Most error trackers bill by event volume. Rollbar starts at 10,000 occurrences for $9, Airbrake at 25,000 errors for $19, Sentry and Honeybadger Team plans include 50K errors, Datadog charges $25 for the first 50k and Raygun Basic covers 100,000. Check last month's error count in your logs and add headroom for a bad deploy, then see where each vendor lands.

Check how each tool handles spikes

A single broken release can send millions of duplicate errors. Look for rate limiting, spike protection or quota controls so one incident does not use a month of quota. Rollbar includes fine-grained rate limiting on Essentials, Raygun has spike protection on every plan, Airbrake Pro offers spike forgiveness and Sentry Business adds advanced quota management.

Match SDK coverage to your stack

Mobile apps need symbolication of native crashes from dSYMs and ProGuard mappings, and frontend apps need source maps. Sentry and BugSnag have the widest mobile and frontend coverage, Honeybadger is strongest for Ruby, PHP, Elixir and Python backends, and Airbrake lists notifiers for 50+ languages.

Decide how much context you want around an error

A stack trace tells you where code failed; a session replay shows what the user did. PostHog and LogRocket attach replays to errors by default, Sentry and Rollbar offer replay as part of their plans, and Datadog and New Relic connect errors to traces and logs. Pick based on whether your hardest bugs are in the UI or in backend services.

Wire alerts into your workflow before you commit

Error tracking only helps if the right person sees the alert. Test Slack or Teams alerts, issue tracker links and ownership rules during the trial. Sentry can auto-assign issues to the committer, New Relic lets you assign error groups to a team, and Honeybadger reserves Jira, PagerDuty and webhooks for paid plans.

Frequently asked questions

+What is the best error monitoring tool in 2026?

Sentry is our top pick because it combines detailed stack traces, suspect commits, Release Health and wide SDK coverage, with a free plan for one user and a Team plan at $26 per month billed annually. Honeybadger and Rollbar are the strongest alternatives for smaller teams.

+What is the best free error monitoring tool?

PostHog has the largest free allowance with 100K exceptions a month and unlimited team members. Sentry and Honeybadger include 5,000 errors free for one user, Rollbar includes 5,000 occurrences with unlimited users, and BugSnag includes 7.5K events for one user.

+How much does error monitoring software cost?

Paid plans start at $9 per month for Rollbar Essentials, $19 for Airbrake, $25 for the first 50k errors on Datadog billed annually, and $26 for Sentry Team or Honeybadger Team. Raygun starts at $40 per 100,000 errors billed annually, and LogRocket Core at $83 per month for 10,000 sessions.

+What is the difference between error monitoring and APM?

Error monitoring captures exceptions and crashes with stack traces and tells you who was affected. APM measures response times, throughput and traces across services. Datadog, New Relic, Sentry and Raygun offer both, while Rollbar, Airbrake and Honeybadger focus mainly on errors.

+Which error tracker is best for mobile apps?

Sentry and BugSnag are the strongest for mobile. Sentry tracks crash-free sessions and version adoption by release, and BugSnag's Stability center compares releases and symbolicates native crashes from dSYMs and ProGuard mappings.

About this list

Updated November 9, 2026 by the Mojolin research desk. Mojolin is self-funded

Questions or corrections: editorial@mojolin.com

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