I am using my Blog Poster app on a Windows 7 computer today. I have been developing it on a Windows 10 machine. I recentely added Ruby and the Nokogiri and Twitter gems to the Win 7 machine so I could test it, and all is working well so far.
Even the Twitter API allows for 280-character posts, so my Ruby app using the Twitter gem can also send longer posts. For a while, I could post 280 on the Twitter web site but only 140 with the API.