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GitHub Codespaces
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StackHive
Dirigible
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Glitch
CodeAbbey
ThreadMine.dev
ThreadMine analyzes Java/JVM thread dumps in seconds. Upload or paste a dump (no signup, up to 10 MB) and get automatic detection of deadlocks, thread leaks, pool exhaustion, CPU hotspots and virtual thread pinning (Project Loom), plus a health score and a shareable report.
Parses HotSpot, OpenJ9, Zing and GraalVM. Paid plans add an AI assistant that explains the root cause and suggests a fix, multi-dump comparison/timeline, history, integrations and an API. A free, no-login web analyzer is the entry point โ the same low-friction flow as fastThread.io or jstack.review, but with automatic problem detection and AI on top.
Privacy: no account, TLS + AES-256, temporary dumps, zero AI-data retention.
CodeTasty
ThreadMine.devGitHub Codespaces - GItHub Codespaces is a hosted remote coding environment by GitHub based on Visual Studio Codespaces integrated directly for GitHub.
CloudShell - Cloud Shell is a free admin machine with browser-based command-line access for managing your infrastructure and applications on Google Cloud Platform.
StackHive - Design, develop or publish websites right from your browser
Dirigible - Dirigible is a cloud development toolkit providing both development tools and runtime environment.
StackBlitz - Online VS Code Editor for Angular and React
Glitch - Glitch is the friendly community where everyone builds the web. Simple, powerful interface for creating web apps.