Best Free Monitoring Tools for Developers

Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments

Infrastructure monitoring free for up to 5 hosts with 1-day metric retention

Free tier includes access to all Grafana Cloud services with limited usage, 14-day retention, and community support. 10k metric series, 50 GB logs, and 50 GB traces are included. Pro costs $19 a month plus usage, includes 10k active series and 50 GB each of logs and traces, and bills usage above them. Pro keeps metrics for 13 months and logs, traces, profiles and k6 tests for 30 days.

• Free and Trial accounts opened on or after 2026-04-20 can only send email alerts and reports to users in their own Grafana instance. Other email recipients are rejected. Cloud Alertmanager is unavailable; native Grafana Alertmanager is used. Webhooks and other alert integrations are unaffected. Upgrading lifts the email limit. Older free accounts are unaffected. (From status.grafana.com/incidents/xg2h8ht1d44n, read 2026-11-02.)
• Free-tier stacks have a hard cap of 1,000 dashboards and 1,000 folders. Stacks already above the cap keep their existing resources. (From grafana.com/whats-new/2026-04-07-introducing-limits-to-dashboards-and-folders-resources, read 2026-11-02.)

Observability platform — 500 GB ingest/month, 25 GB storage, 30-day retention, 2 datasets, 1 user, 10 GB-hrs/mo query compute, 256 fields/dataset, 3 monitors, Email/Discord notifiers onlyWhen we last read the page we cite for this offer, on 2026-11-12, we found the same terms as an earlier read we had declined to record, so we cannot confirm these terms today.

Full observability platform — 100 GB data ingest/month, 1 full platform user, unlimited basic users, 500 synthetic checks, 8+ days retention

Observability platform — Logs: 500 MB/day ingestion, 7-day retention. Monitoring: 3 hosts, 3 containers/host, 30-min data retention, 1 alert rule. Volume-based pricing, no per-host charges on paid plans

Application monitoring (APM, errors, logging) — Our free plan is perfect for startups, hobby, or side-projects 30K requests 1GB logging 5-day retention

Full-stack observability platform — free forever plan: 100 GB/month data (APM, logs, infrastructure, traces, RUM, synthetics, database, serverless), 1,000 RUM sessions/month, 20,000 synthetic checks/month, 14-day data retention, unlimited users

A complete Real-Time monitoring dashboard in less than one minute with a free forever tier.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Application performance monitoring — free for first 100,000 traces/month.

10 uptime monitors, 3 GB logs (3-day retention), 100K exceptions/mo, 5K session replays, 30 GB metrics, 1 status page, 1 responder

Free $ 0 /month. 50 monitors, 5 min. monitoring interval, Dependency monitoring, HTTP, port & ping monitor, Keyword monitor, API monitoring, UDP monitoring, Location-specific monitoring, Slow response alerts, DNS monitoring, SSL & Domain exp. monitor, Only 5 integrations, Basic status pages

Uptime monitoring — 10 monitors (HTTP/heartbeat/API), 5-minute check interval, 3 regions, 3-month history, 3 status pages

Cron job and scheduled task monitoring — 20 monitors, 100 log entries per job, email/webhook/Slack/Telegram alerts, API access. Also free for open-source projects (Business plan)

Uptime monitoring — 10 monitors, 5-min intervals, 1 page speed monitor, 1 domain monitor, 1 SSL monitor, email alerts, basic integrations

Cron job and uptime monitoring — free Hacker plan: 5 monitors, 5-minute check frequency, email, Slack, and webhook alerts, 1 status page (50 subscribers), 12-month data retention, single userWhen we last read the page we cite for this offer, on 2026-11-01, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.

Website uptime monitoring. The free plan has one website and one API monitor, each checked as often as every 5 minutes; transaction, page-speed and real-user monitoring start with the paid plans. New accounts start on a 30-day trial with no credit card and move to the free plan unless they upgrade.

Uptime and status page monitoring — free plan: 3 monitors (uptime, keyword, heartbeat), 3-minute check interval, 2 team members, 1 status page, SSL monitoring, multi-location checks, email/Slack/Discord alerts

Uptime and status page monitoring — free plan: 20 monitors (HTTP, port, ping, keyword), 5-minute check interval, 1 basic status page with real-time updates and subscriber notifications, 1 seat, 1 server monitoring agent, email and webhook alerts

Server and website monitoring (formerly Nixstats) — free Lite plan: 1 server monitor, 5 site monitors, 10-minute check interval, 24-hour data retention, email alerts

Automated API testing and monitoring. Free plans for teams and individuals.

Free for 3 servers, 5 uptime monitors, unlimited users, unlimited dashboards, unlimited alerting rules.When we last read the page we cite for this offer, on 2026-11-01, we found the same terms as an earlier read we had declined to record, so we cannot confirm these terms today.

Monitoring for cron jobs. One free snitch (monitor), more if you refer others to sign upThe page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

60 uptime monitors, 5-minute interval. Email, Slack alerts.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Linux server monitoring with real-time dashboards and alerting — no permanent free tier. 14-day free trial with no credit card required; paid plans from €19/month.

Minimalist uptime monitoring with beautiful status pages. The Forever Free plan offers HTTPS, Keyword, SSL and Response-time monitorming for 10 websites or api-endpoints, and provides 2 dashboards/status pages.

Modern uptime monitoring service. Check unlimited URLs and get downtime notifications via Discord, Slack, or email.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Free account is limited to accounts with 1 category and less than 5 uptime monitors. It exclude pro features such as sms/voice notification, scheduling and recovery actions.

Uptime monitoring with support for large projects and teams. Free tier: 10 HTTP monitors, 1 DNS monitor and 1 status page.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Website and cron monitoring - 2 monitors freeThe page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Server monitoring, uptime monitoring, DNS & domain monitoring. Monitor 10 servers, 20 uptime monitors and 20 domain & SSL monitors for free, with 5 status pages and a 1-minute check interval.

Get 20 uptime monitors with 5-minute intervals and a customizable status page—even for commercial use. Enjoy unlimited, real-time notifications via email and Telegram. No credit card needed to get started.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Basic $ 0 per month 5 Monitors 3 Minute Checks 1 Status Page 1 Server 7 Day Hi-Res Retention 3 Month Historical Data

Superseded: As of 2026-08-28, xitoring.com reads: The page offers a 14-day free trial, and then paid plans starting at $4.99/mo for Uptime + SSL. We are not publishing our stored Xitoring.com terms beside it — our own pricing change record, discovered 2026-08-28, names them as the previous ones. Read what we recorded ↓

Error monitoring — Includes: 1 user Error and performance monitoring 7.5K events and 1M spans per month 50+ platforms 30+ third-party integrations Free plan features, plus: Unlimited users End-to-end diagnostics Basic notifications

Error tracking with 5,000 occurrences/month, 30-day data retention, 1,000 session replays. Processing stops at limit (no surprise charges)

Open-source error tracking — 1,000 events/month, unlimited projects and team members, Sentry SDK-compatible. Also includes uptime monitoring. Self-hostable for unlimited

1,000 sessions a month for $0 on the Free plan, free forever. LogRocket Galileo is not included. Analytics events, error events and logs are unlimited on every plan. LogRocket provides session replay, product analytics and error monitoring. Core starts at $83 a month for 10,000 sessions. Pro starts at $292 a month for 10,000 sessions. Both prices are billed annually. A 14-day free trial of the paid plans is available.

Real-time error, feature, and log reporting. Free plan: 3,000 events/month, 1 project, 1 user, 3-day retention. Also fully open source (Apache 2.0) for self-hosted unlimited use

Error-tracking with Sentry-SDK compatability. Free for up to 5,000 errors/month, or unlimited use when self-hosted.When we last read the page we cite for this offer, on 2026-11-13, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.

JavaScript error tracking with screenshots and click trails — There is a free tier with limits of 1,000 logged errors per month, 1,000 log API calls per month, performance metrics for 100 URLs, time on page for 100 URLs, and pageviews for 10,000 URLs. It includes email notifications, screenshots, click trails, and support for one domain and its subdomains.

Error logging and uptime monitoring for web developers. Free Small Business subscription for open-source projects.

Exception, uptime, and cron monitoring. Developer plan (free): 5,000 errors/month, 1 user, 50 MB/day logging, 1 uptime monitor, 1 status page, 1 dashboard, unlimited projects, 15-day error data retention, 7-day log retention. Intended for low-traffic projects.

Bug reports with console logs, network requests and device details captured in one click, from a browser extension or the Jam for Mac app. The Free plan is $0 with 30 Jams a month, 5 Recording Links and recordings up to 5 minutes; it includes Jira and Linear integrations, webhooks and debugging Jams through Jam's MCP server. Team is $14 per creator a month, billed yearly, with unlimited Jams and 150 Recording Links.

One-click bug reports straight in your browser — The Personal plan is $0/month and includes unlimited recordings that are never deleted, time travel (60 second limit), public recordings, and basic privacy filters. It does not include team members or projects.Its pricing page has not resolved for us since 2026-09-28, so we cannot confirm these terms today.

Free OSS (Apache 2.0). CNCF graduated time-series monitoring and alerting. Pull-based metrics collection, PromQL query language, multi-dimensional data modelThe page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

Free OSS (Apache 2.0). CNCF graduated distributed tracing system. End-to-end request tracing, performance optimization, root cause analysis. OpenTelemetry compatibleThe page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

Netdata is an open-source tool to collect real-time metrics. It's a growing product and can also be found on GitHub!When we last read the page we cite for this offer, on 2026-10-24, we could read no amount, tier or rate on the page, so we cannot confirm these terms today.

Powerful Kubernetes monitoring based on Prometheus. Bring your own Prometheus or install the all-in-one bundle. The free tier includes up to 20 Kubernetes nodes. Alerts via Slack, Microsoft Teams, Discord, and more. Integrations with PagerDuty, OpsGenie, VictorOps, DataDog, and many other tools.When we last read the page we cite for this offer, on 2026-11-13, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.

Powerful server monitoring in a unified platform for metrics and logs, with no setup complexity. Free for one server.

Free server monitoring service with alerts and metrics. Up to 25 servers and 25 uptime monitoring instances.

Always Free: all non-chargeable Google Cloud metrics, first 1M monitoring API calls/month. Dashboards, alerting, and uptime checks for GCP resourcesWhen we last read the page we cite for this offer, on 2026-10-25, we found the same terms as an earlier read we had declined to record, so we cannot confirm these terms today.

• Google Cloud's Free Tier requires a billing account. (From docs.cloud.google.com/free/docs/free-cloud-features, read 2026-10-07.)
• Usage beyond the Free Tier's monthly limits is billed at standard rates. (From docs.cloud.google.com/free/docs/free-cloud-features, read 2026-10-07.)

Incident management — 5 users, 1 on-call schedule, 1 escalation policy, 100 intl phone/SMS notifications/month, 700+ integrations, API access

Incident management platform — free Basic plan: up to 5 users, Slack or Microsoft Teams native incident response, single-team on-call scheduling, 1 status page, essential incident automation

A status page of status pages. Could you track the status pages of your upstream providers?The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-26, so we cannot confirm these terms today.

Cloud and SaaS status page aggregator — 5 monitors and 2 notification channels (Slack and Discord) are free forever.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-23, so we cannot confirm these terms today.

Simple interface for alerting and on-call management. Free up to 5 users.When we last read the page we cite for this offer, on 2026-10-29, we found the same terms as an earlier read we had declined to record, so we cannot confirm these terms today.

Superseded: As of 2026-08-28, phare.io reads: The Hobby plan is free forever, no credit card required. You get unlimited team members, unlimited projects, and all the core features. No artificial caps designed to pressure you into upgrading. We are not publishing our stored phare.io terms beside it — our own pricing change record, discovered 2026-08-28, names them as the previous ones. Read what we recorded ↓

Advanced status page platform with monitoring. The free tier includes one public customizable status page with an SSL subdomain. Pro plan is offered to open-source projects and non-profits free of charge.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Status page monitoring, 3 monitors freeThe page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Find Core Web Vitals history for a url or a website.The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

Free load testing tools with limitations

Mobile app monitoring. Free for small teams with up to 1 million user sessions per year.

There is no startup program: instabug.com/startups no longer serves one. Checked 2026-09-02, the URL redirects to www.luciq.ai, the company's site after its rebrand to Luciq, whose navigation carries no startups or program page. The former offer was a discount on all Instabug plans for eligible startups.