Ranked in these QuestionsQuestion Ranking
Pro Color coded host
Host connections can be assigned a color, so you quickly discern them in the host list and in the connection tabs.
Pro Allows storage of login credentials
Sollar Putty creates an encrypted local file where you can store the login details for your devices.
Pro Provides significant expansion of PuTTY capabilities for free
In additional to regular PuTTY features you get multi-tab interface, auto-login, quick access to recent sessions, integration of Windows Search, and other useful features.
Con No public download
They require your personal data and a working email before you can get the program. Not a great way to spread your allegedly "free" tool.