I think PuTTY is one of the best open-source utilities, hardly any day goes by without me using this terminal. The only thing I miss is that you can have one PuTTY session per window – Of course,  you can always right-click in the top window which gives you the option to open another PuTTY terminal.

A while ago I read about PuTTY Connection Manager, this is the solution when you manage more than one putty session in a window. PuTTY Connection Manager is still in alpha but is working pretty stable. You have to create a database when you can store all your sessions and open the PuTTY or telnet session in tabs.

When you run Windows as normal user, you have to change NTFS security for your account so it has change rights on the folder “C:\Program Files\PuTTY Connection Manager” and you can store the PuTTY Connection Manager database.

Link http://puttycm.free.fr