When comparing Back4App vs Horizon, the Slant community recommends Back4App for most people. In the question“What are the best Backend as a Service providers for webapps?” Back4App is ranked 5th while Horizon is ranked 6th. The most important reason people chose Back4App is:
The user is not a hostage and can migrate the application to other hosting service whenever they want.
Ranked in these QuestionsQuestion Ranking
Pro Open source
Back4app is an open source BAAS and Backend generator.
Pro Smooth migration from Parse
Back4App offers a smooth migration for all former Parse users who wish to migrate their data now that Parse has announced that it will stop soon.
Built with an eye to be used from within your node.js applications e.g. from within Koa, Express, Hapi, etc
Con Uses MongoDB for the backend, which is not considered very safe by many
Back4App uses MongoDB as the database where data is stored. Mongo has been known to have issues with data corruption and data loss.
Con Maintained by RethinkDB
Last commit Nov. 2016