A very useful SSL check utility which will support non standard port numbers. Useful for monit debugging on port 2812.
Similar to Charles Proxy, but only on Windows, a web debugger that acts as a proxy between browser and web and allows the user to monitor / modify request on the fly.
A paid ($50/user) program that acts as a proxy between browser and web and allows the developer to monitor / modify / etc traffic including SSL. Handy. Want open source.
Handy online visualiser for json data. Can get slow with large files, but it's useful nonetheless.