NextCloud integration strategy/method with a variety of applications.

Develop a strategy and method to quickly integrate apps into NextCloud open source platform (written in PHP). The challenge is that some of the apps to be integrated are from various languages and frameworks, like Ruby, Python, Go, etc. No iframing is allowed, therefore, a novel integration strategy, an API strategy or parse-and-post strategy could be plausible. Skills require strong experience with PHP and javascript plus fluency with most languages (Java, Ruby, Python) necessary to integrate the apps. The first milestone will be demonstration of successful integration of one app (Reaction Commerce, open source JavaScript/Meteor with NextCloud). Payment made at first milestone. Many apps to follow this milestone. Company is based in Austin, TX but freelancers are welcome from all parts of the world.