Kirjoitusalusta is described as 'Based on open source Etherpad' and is an app in the Network & Admin category. There are three alternatives to Kirjoitusalusta for Online / Web-based, Self-Hosted solutions, Etherpad, Firebase and Cloudron. The best alternative is Etherpad, which is both free and Open Source. Other great apps like Kirjoitusalusta are eduPad (Free) and Firepad (Free, Open Source).
Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time. Collaborating in really real-time No more sending your stuff back and forth via email, just set up a pad, share the link and start collaborating!