When comparing Apache Usergrid vs Kuzzle, the Slant community recommends Kuzzle for most people. In the question“What are the best self-hosted BaaS (backend-as-a-service) providers?” Kuzzle is ranked 3rd while Apache Usergrid is ranked 9th. The most important reason people chose Kuzzle is:
Supports REST, WebSockets and MQ protocols.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Multiple SDKs
Usergrid has full SDKs for iOS, Android, and HTML5/JS but also node.js, Ruby on Rails, pure pure Ruby, server-side Java, .NET / Windows and PHP.
Pro Apache Cassandra
Pro Asset storage
Pro Supports OAuth 2.0
Pro Open Source
Pro Multiprotocol
Supports REST, WebSockets and MQ protocols.
Pro Realtime through filters
You do not connect to classic rooms but to search filters and can be warned of changes on permanent storage or volatile one.
Pro Open Source
Kuzzle is open source and it's released under the Apache 2 License.
Pro Javascript SDK
A fully documented javascript SDK exists.
Cons
Con May have issues since it's stil la relatively young project
Kuzzle is (as of February 2nd, 2015) in alpha version and approaching beta.