Free-tier monitoring & observability

Pulsetic

Pulsetic is a website uptime monitoring service that checks websites, SSL certificates, ports, TCP endpoints, keywords, cron jobs, APIs, IP addresses, and domains. It sends downtime alerts by email, S...

Seline Analytics is a website analytics platform that collects visitor events through a small JavaScript snippet or HTML embed and presents them in a dashboard. The product includes real-time traffic ...

GitDailies

GitDailies is a GitHub app that reads repository activity and computes engineering metrics for pull requests and delivery flow. It tracks PR metrics and DORA metrics, then sends alerts and daily summaries through GitHub, Slack, email, or Telegram.

HTTP Observatory

HTTP Observatory is a Mozilla tool that scans a website’s HTTP headers and related security settings to check compliance with common security best practices.

Ownkube

Ownkube is a developer platform that deploys applications into the user's own AWS account. It connects to GitHub, builds from a pushed repository, detects the framework and runtime, and provisions preview URLs and production deployments inside the customer's cloud account.

HostedScan

HostedScan is a vulnerability scanning platform for websites, servers, networks, and APIs. It combines multiple scanners in one service, including Greenbone OpenVAS, Tenable Nessus, OWASP ZAP, Nmap, Nuclei, and SSLyze, and adds scheduling, alerts, reporting, and vulnerability management.

IncidentHub

IncidentHub is a status page monitoring service that tracks third-party vendors, including cloud, SaaS, utility, and private status endpoints. It ingests public status pages, private status pages, and...

GoatCounter

GoatCounter is an open source web analytics platform that can be used as a hosted service or self-hosted application. It collects pageview and event data through a single script tag, a no-JavaScript tracking pixel, backend middleware, or logfile imports.

Fivenines

Fivenines is a SaaS infrastructure monitoring platform for Linux and Windows servers, network devices, uptime checks, cron jobs, and workflow-based alert routing. It uses an open-source agent for server telemetry and supports HTTPS, TCP, ICMP, DNS, SNMP, a public REST API, and a Terraform provider.

GlitchTip is an open source error tracking service for applications and websites. It collects exceptions, log messages, Content Security Policy violations, performance transactions, uptime checks, and...

Shake

Shake is a bug and crash reporting platform for mobile apps and websites. It provides SDKs for iOS, Android, React Native, Flutter, and web, and automatically attaches data such as device model, HTTP ...

Bugsink is a self-hosted error tracking service for capturing application exceptions, stack traces, code context, and local variables. It supports a Docker-based installation flow and can also be used as a hosted service with the same SDK workflow.

OpenObserve

OpenObserve is an open source observability platform that unifies logs, metrics, traces, dashboards, alerts, frontend monitoring, session replay, and incident workflows in a single system. It runs as ...

Toggled.dev

Toggled.dev is a feature toggles management platform for controlling feature release, rollout, and rollback across applications. It supports multi-regional operation, user segmentation, session sticki...

redirection.io

redirection.io is a website traffic and redirect management service that collects HTTP request logs in real time, groups requests, and exposes traffic views for analysis. It also lets users create and...

Respan

Respan is an LLM engineering platform for tracing, evaluating, optimizing, deploying, and monitoring AI agent traffic through a gateway and observability dashboard. It logs requests, traces spans, tra...

Hook Relay

Hook Relay is a webhooks-as-a-service platform that accepts webhook requests, stores them in DynamoDB, and queues them in SQS for delivery to a customer-supplied URL. It includes delivery retries with...

dAppling

dAppling is a decentralized frontend deployment platform for web3 applications. It connects to a GitHub repository, autodetects the frontend framework, and builds and deploys on every push. The servic...

Hookdeck Event Gateway

Hookdeck Event Gateway is a webhook and event ingestion service that receives inbound HTTP requests, applies routing and filtering rules, queues events, and delivers them to downstream destinations. I...

Aptabase is an open source analytics service for mobile, desktop, and web applications. It collects anonymous event data from SDKs for frameworks and platforms including Electron, Tauri, Swift, Kotlin...

EmailQo Email Infrastructure Grader

EmailQo’s Email Infrastructure Grader is a web-based domain checker that evaluates email deliverability configuration in one click. It runs four checks against a domain: SPF, DKIM, DMARC, and MX records, then assigns a score out of 100 with each component worth 25 points.

Clicky

Clicky is a web analytics platform that collects visitor, page view, and JavaScript event data in real time. It provides visitor logs, segmentation, heatmaps, uptime monitoring, outbound link and download tracking, custom data logging, and API access for site analytics.

StatusCake

StatusCake is a website monitoring service that checks uptime, page speed, SSL certificates, domains, and servers from multiple locations. It provides scheduled checks, alerting through integrations, and reporting for teams that need to track availability and performance.

DeepSource

DeepSource is an AI code review platform that analyzes pull requests and existing codebases with static analysis, security checks, code quality rules, coverage signals, and AI-assisted review comments...

elmah.io

elmah.io is a cloud service for .NET applications that collects error logs, uptime checks, deployment events, and scheduled-task heartbeats. It stores log messages in the cloud, syncs application errors automatically, and provides dashboards for monitoring, notifications, and issue tracking.

Memfault

Memfault is an embedded observability platform for IoT and edge devices. It collects crash data, logs, performance metrics, and device health signals from deployed devices, then exposes them for debugging, fleet monitoring, and firmware release management.

Bencher

Bencher is a continuous benchmarking platform that runs benchmark jobs on bare metal hardware and tracks results over time. It supports running benchmarks locally or in CI with the same runner environment, then stores, graphs, and queries results through a CLI and web console.

OpenReplay

OpenReplay is a self-hosted session replay and product analytics platform. It records user interactions in web and mobile applications so developers can replay sessions, inspect console errors, network activity, performance metrics, funnels, heatmaps, and journey analysis from the same product.

Honeybadger

Honeybadger is an application monitoring service for Ruby on Rails, Elixir, PHP, Python, JavaScript, Node.js, and other platforms. It combines error tracking, structured logging, uptime monitoring, cron and heartbeat monitoring, status pages, and APM-style dashboards in one hosted product.

WeatherXu

WeatherXu is a JSON-based REST API for real-time weather data, forecasts, historical weather, and alerts. The landing page shows a single endpoint pattern for location-based requests and example responses for current, hourly, and daily weather data.

ImageEngine Kube

ImageEngine Kube is a self-hosted image optimization engine that runs in Kubernetes or Docker inside the customer’s own infrastructure. It processes image requests through the customer’s CDN and origi...

Smart Grow Logs

Smart Grow Logs is a centralized logging service for Android, iOS, Flutter, Web, Node.js, Cloudflare Workers, Hono, macOS, tvOS, Windows, and Go applications. It provides SDKs and plugins for sending ...

LogDog

LogDog is a mobile debugging tool for iOS and Android apps. It collects network requests, logs, analytics events, screenshots, and other app activity from an SDK installed in the application, then streams that data to a web dashboard over WebSocket connections.

ngrok

ngrok is an all-in-one cloud networking platform that provides secure tunnels, API gateway routing, traffic policy, and observability for services running anywhere. It can expose localhost or private ...

cron-job.org

cron-job.org is a hosted cron job scheduler that executes HTTP requests for websites and scripts at configured intervals, from once per minute up to once per year. It supports custom request methods, ...

Mouseflow

Mouseflow is a behavior analytics platform that records user sessions, generates heatmaps, tracks journeys, and detects friction across websites. It captures clicks, scrolls, mouse movement, form inte...

Checkly

Checkly is a monitoring platform for uptime checks, API checks, browser checks, Playwright check suites, status pages, alerting, dashboards, and trace-based root cause analysis. It supports code-first...

Simple Observability

Simple Observability is a hosted server monitoring platform that collects metrics, logs, and cron job results through a single agent installed with one command. The agent sends data outbound over HTTPS to the vendor cloud, and configuration is managed from a web UI rather than local config files.

SyAgent

SyAgent is a server and uptime monitoring service for Linux hosts. It monitors servers, processes, disks, network, memory, and HTTP/PING/PUSH uptime checks, then sends alerts and shows charts and insights through the web app.

ETLR

ETLR is a workflow automation platform that defines workflows in YAML and deploys them from code rather than a drag-and-drop editor. It supports HTTP webhooks, cron triggers, Python functions, HTTP re...

NewReleases.io

NewReleases.io is a release tracking service for software developers and DevOps teams. It monitors supported source code and package registries such as GitHub, GitLab, Codeberg, Gitea, Bitbucket, PyPI...

OnlineOrNot

OnlineOrNot is an uptime monitoring and status page service for software teams. It checks websites, APIs, cron jobs, heartbeat endpoints, and scheduled tasks at intervals as short as 30 seconds on pai...

BorgBase

BorgBase is a hosted backup service for Borg and Restic repositories. It provides encrypted offsite storage with append-only mode, two-factor authentication, built-in alerts, monitoring, and an API for managing repositories and automation.

Exceptionless

Exceptionless is a .NET exception reporting and event logging service for ASP.NET, Web API, WebForms, WPF, Console, and MVC applications. It collects unhandled exceptions and custom events through a c...

Mergify

Mergify is a merge automation platform for GitHub repositories. It handles the steps between pull request creation and a green main branch, including merge queues, merge protections, CI observability, flaky test detection, and stacked pull requests.

Webpushr

Webpushr is a web push notifications platform that lets websites send browser push messages through a dashboard, REST API, or WordPress plugin. The service supports subscriber targeting by segments an...

Arize

Arize is an AI and agent engineering platform that combines observability, tracing, evaluation, prompt management, and monitoring for production AI systems. The product includes Arize AX for generativ...

Cloud 66

Cloud 66 is a platform for deploying and managing applications on your own cloud provider or servers. It connects a Git repository and a cloud account, then handles application deployment, scaling, monitoring, and operational controls from a web dashboard.

Logflare

Logflare is a hosted logging and log analytics service for Cloudflare, Vercel, Elixir, and JavaScript applications. It ingests events from integrations such as Cloudflare Workers, OpenTelemetry, Elixi...

Simple Analytics

Simple Analytics is a web analytics service that tracks website visitors, page views, referrers, UTM sources, countries, events, and conversion-related activity through a lightweight script. It provid...

Plurai

Plurai is an AI agent trust platform with products for simulation, evals, guardrails, and simulation-driven optimization. It provides synthetic scenario generation, no-code evaluation creation, guardrail training, and CI/CD integration for validating agent behavior before and during production.

Railway

Railway is an all-in-one cloud platform for deploying, networking, scaling, monitoring, and evolving applications from a connected repository or local project. It supports GitHub repo deployment, Dock...

BugSnag

BugSnag is an application monitoring service for mobile, web, desktop, and server apps. It captures unhandled and handled errors, groups them by root cause, and provides diagnostic context such as sta...

Honeycomb

Honeycomb is an observability platform for collecting and querying logs, metrics, traces, and other structured telemetry. It supports distributed tracing, BubbleUp analysis, OpenTelemetry ingestion, query history, permalinks, and Honeycomb Metrics.

Inngest

Inngest is a workflow orchestration platform for durable execution of backend code, background jobs, endpoints, and AI agents. It wraps functions in steps to add retries, recovery, throttling, batchin...

Rollbar

Rollbar is an error monitoring and tracking service for software teams. It collects application errors from server, client, and mobile SDKs, groups similar issues, and attaches stack traces, telemetry...

Axiom

Axiom is an event data platform for logs, traces, metrics, and events. It ingests data through OpenTelemetry, Events API, SDKs, and other connectors, then provides query, monitoring, dashboarding, and retention features in a hosted cloud service.

Datadog

Datadog is a cloud monitoring and security platform that collects metrics, traces, logs, events, and other telemetry from infrastructure, applications, databases, containers, serverless workloads, and...

Modal

Modal is a serverless AI infrastructure platform for running inference, training, batch processing, sandboxes, notebooks, and other Python workloads. It provides sub-second cold starts, instant autosc...

Umami

Umami is a web analytics platform that collects pageviews, custom events, funnels, revenue, and session replays from a website. It provides dashboards for traffic, audience location, device and browser breakdowns, UTM attribution, user journeys, and conversion analysis, with no cookies required.

New Relic

New Relic is an observability platform that collects metrics, logs, traces, browser and mobile telemetry, infrastructure signals, and security data in one account. The free tier includes access to the...

Plausible Analytics

Plausible Analytics is a web analytics service that collects site traffic and event data through a lightweight JavaScript script. It provides a single-page dashboard with traffic, goals, revenue attribution, funnels, referrer data, and Search Console integration for SEO analysis.

Grafana Cloud

Grafana Cloud is a managed observability platform that combines metrics, logs, traces, profiles, k6 performance tests, dashboards, and alerting in a single hosted service. It supports OpenTelemetry an...

ServerBuddy

ServerBuddy is a native macOS application for managing Linux servers with a clean, point-and-click interface. It brings common administration tasks into one place so users can monitor system health, connect over SSH, and handle day-to-day server operations without relying entirely on the terminal.

AWS X-Ray

AWS X-Ray is a distributed tracing and application observability service that helps teams analyze requests as they move through microservices and other components. It provides trace collection, servic...

UptimeRobot

UptimeRobot is an uptime monitoring service that checks websites, APIs, servers, and other endpoints to help teams detect outages and performance issues quickly. It provides real-time alerts, public s...

PostHog

PostHog is a product operating platform for product engineers and data teams. It combines analytics, session replay, feature flags, experiments, surveys, data warehousing, error tracking, logs, workflows, and AI-assisted product development in a single cloud platform.

Cronitor

Cronitor is a monitoring platform built for developers and operations teams that need reliable visibility into jobs, websites, APIs, and infrastructure events. It combines cron job monitoring, uptime checks, heartbeat tracking, status pages, and real user monitoring in a single product.

APItoolkit

APItoolkit is an API observability and monitoring platform that collects logs, traces, metrics, request payloads, and events to help developers find breaking changes, errors, and performance regressions in production.

Better Stack

Better Stack is an observability and incident response platform that helps teams monitor infrastructure, trace requests, manage logs, track errors, and communicate outages from a single product suite.

Sentry

Sentry is an application monitoring platform that helps development teams detect, diagnose, and resolve software issues across the full application lifecycle. It combines error monitoring, performance...

highlight.io

Highlight.io is an open source, full-stack monitoring platform for modern web applications. It brings together session replay, error monitoring, logging, traces, and dashboards in a single product so engineering teams can understand issues across the entire stack.

Browse AI

Browse AI is a no-code web scraping and website monitoring platform that helps teams extract structured data from websites, automate recurring checks, and turn web pages into usable datasets. It is designed for users who need reliable data extraction at scale without building custom scripts.

PagerDuty

PagerDuty is an AI-first operations platform for incident management, on-call coordination, and digital operations response. It helps teams detect issues, route alerts, mobilize responders, and resolve incidents faster across the tools they already use.

Compass

Compass is Atlassian’s internal developer platform for cataloging software components, connecting teams, and improving developer experience across the software lifecycle.

Statuspage

Statuspage is an incident communication platform from Atlassian that helps organizations keep users, customers, and employees informed about service health in real time.

DigitalOcean Uptime

DigitalOcean Uptime is a server and endpoint monitoring service that helps teams detect slowdowns, outages, and SSL issues before they affect users. It continuously checks websites, applications, URLs, and IP addresses from multiple global regions and sends alerts through email or Slack.

Amazon CloudWatch

Amazon CloudWatch is AWS’s monitoring and observability service for applications, infrastructure, and operational data. It helps teams collect metrics, logs, and traces, visualize system health, and investigate issues across cloud and hybrid environments.