Free-tier observability monitoring

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.

Trackingplan

Trackingplan is a monitoring service for web and app analytics, ads, consent, and privacy data. It installs via a JavaScript snippet, Google Tag Manager, or iOS and Android SDKs, then observes real user traffic to discover events, properties, pixels, UTMs, and destinations without manual setup.

Aikido Security

Aikido Security is a unified application security platform that scans code, cloud infrastructure, containers, and runtime traffic from one workspace. It combines open source dependency scanning, SAST,...

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...

Embrace

Embrace is a user-focused observability platform for mobile and web applications. It captures real user monitoring data, session timelines, crashes, ANRs, network requests, Core Web Vitals, custom metrics, and alerts, with OpenTelemetry used for tracing and backend linkage.

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 ...

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.

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.

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.

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.

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.

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.

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.

Servervana

Servervana is a website performance and uptime monitoring service that checks HTTP, DNS, SSL, and API endpoints. It collects historical data, shows page loading behavior, and provides status pages and alert routing for issue detection and escalation.

Assertible

Assertible is a web service testing and monitoring platform for APIs and websites. It lets developers and QA teams create HTTP assertions, run post-deployment smoke tests, schedule uptime checks, and review detailed test results across environments such as staging and production.

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.

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.

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.

Azure Monitor

Azure Monitor is Microsoft Azure’s observability service for collecting, analyzing, and acting on telemetry from applications, infrastructure, and network resources. It combines logs, metrics, alerts,...

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.

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...

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.

Netdata

Netdata is an infrastructure monitoring and observability platform that collects metrics, logs, alerts, and network telemetry from agents running on hosts, containers, Kubernetes, cloud instances, and...

GTmetrix

GTmetrix is a website performance testing service that analyzes page speed, Lighthouse metrics, Web Vitals, Real User Metrics (CrUX), waterfall data, video, and report history. It runs tests from sele...

Bleemeo

Bleemeo is a hosted infrastructure monitoring platform that collects metrics and logs through its Glouton agent, Prometheus exporter scraping, and OpenTelemetry OTLP endpoints. It provides real-time d...

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.

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.

Middleware

Middleware is a full-stack observability platform that collects infrastructure, APM, real user monitoring, logs, synthetic checks, browser tests, and LLM observability data in one place. The platform ...