
Charles Proxy
Fiddler
Proxyman.io
HTTP Toolkit
Surge for Mac
nginx
mitmproxy
Weer
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.
Charles Proxy
ThreadMine.devNo features have been listed yet.
Fiddler - Fiddler is a debugging program for websites.
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
nginx - A high performance free open source web server powering busiest sites on the Internet.
mitmproxy - mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.