Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
Xmind - Xmind is a brainstorming and mind mapping application.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
HTTP Headers - HTTP Headers allows you to quickly see the HTTP header information for the current URL.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.