Consider Convergence for text attributes

[ekuiter]

Convergence (https://convergencelabs.com/) promises to be an all-in-one solution for real-time collaboration. They recently shipped RC1. As I see it, they essentially wrap an OT algorithm (http://www3.ntu.edu.sg/home/czsun/projects/otfaq/) in a user-friendly API with integrated workspace awareness and messaging facilities. Possibly also Kleppmann's JSON CRDT. (The docs are not too specific.)

Their out-of-the-box solution won't fit for feature modeling, but we may use it to provide good old text OT, e.g., for feature and constraint descriptions, as this is tedious to implement otherwise.