Charles Web Debugging Proxy • HTTP Monitor / HTTP Proxy / HTTPS & SSL Proxy / Reverse Proxy

browserling - interactive cross-browser testing

RequestBin — Collect and inspect HTTP requests, debug webhooks

hurl.it - Test HTTP API requests - Twilio Labs

occ/TraceKit · GitHub

jmhodges/jsonpp @ GitHub

One Thing Well | json.human.js

buger/gor

httpry

Optimizing web servers for high throughput and low latency | Dropbox Tech Blog