AppSignal
Error tracking and performance monitoring that just works
AppSignal is an application performance monitoring platform for developers that brings error tracking, performance monitoring, distributed tracing, log management, host monitoring, uptime monitoring, and custom metrics dashboards into a single tool. It connects errors to logs, traces, and deploys so teams can identify the cause of an issue without switching between separate systems.
Core modules include Error Tracking, Performance Monitoring, Distributed Tracing, Log Search & Filter, Live Tail, Trace-Linked Logs, Log-Based Alerts, Custom Metrics & Dashboards, Deploy Tracking, and an MCP Server that lets AI coding tools such as Claude, Cursor, and Zed query production errors, traces, and deploys. It supports Ruby, Elixir, Node.js, Python, PHP, Go, Java, Rust, and JavaScript, with OpenTelemetry-based instrumentation for several languages and a Kubernetes integration for cluster, pod, and node metrics. Integrations include Slack, GitHub, Jira, Linear, GitLab, and PagerDuty.
AppSignal is aimed at development teams that need full-stack visibility across application and infrastructure layers. It is packaged with a free plan starting at zero cost and a 30-day full-featured trial.
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