clvi is a Twitter app that lets you tweet from the Windows command prompt.
Simply run the portable app. Unless you want to keep it open, its windows will close in 10 seconds.
Open command prompt and, assuming that the clvi.exe has been downloaded & saved to your dektop folder, type the following syntax:
E:\Users\username\Desktop\clvi.exe w:[twitter] u:[username] p:[password] m:[test message]
My Windows 7 is on E Drive, hence you see an ‘E’!
I tried it and it worked fine!
It also works with Snipia.com, which is considered to be a Corporate Twitter.