Diff So Fancy - Make Git diffs look good
HTTPDump - A simple, beautiful Webhook debugging tool.
Git Flow - Git Flow is a very self-explanatory free software workflow for managing Git branches.
httpbin(1) - HTTP request and response service
Working Copy - The powerful Git client for iOS
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.