1.1.1.1 - The free app that makes your Internet safer.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
DNSCrypt Proxy Client - Windows client for managing the DNSCrypt proxy.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
PortKnox - PortKnox is a free OwnCloud provider.
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.