http://puttysm.sourceforge.net/
GPL software
PuTTY Session Manager (PSM) is a tool that allows system adminstrators to organise their PuTTY sessions into folders and assign hotkeys to their favourite sessions. This is designed for MS Windows and requires the .NET 2.0 Runtime.
this is very useful when organizing a long list of servers that one might connect to on a regular basis.
.NET kills it. .NET can't be made portable. And it isn't on most PCs you'll encounter since it's an optional add-on.
Sometimes, the impossible can become possible, if you're awesome!