Collapse - Open Source, or just free for using? Both? by seanferd · 8 years ago In reply to gap filling apps? It may make a difference to some folks. You may be able to use an existing repository/site/service for this project, depending on how exactly it should be constructed to meet security and/or participant needs.You are right about re-inventing the wheel - code reuse is a common topic. Collapse - Open source and free by jmfullsail · 8 years ago In reply to gap filling apps? Something needs to financially support of the portal, so my initial thought is that there would be a fee to those who don't contribute an app. In other words, you need to submit an app (to help build the 'library') to get an app, and if you don't submit an app then you would need to purchase an app. App exchanges are obviously nothing new, but having one for a myriad of apps that would otherwise take, say, 5-40+ hours to build would be incredibly helpful. Sure, to start with the portal isn't going to solve 100% of a specific need but as the exchange grew and matured it's likely that the value of the apps would greatly increase. So to answer your question, I envision the site to be open source and free to contributors.