When comparing deployd vs Kuzzle, the Slant community recommends Kuzzle for most people. In the question“What are the best Backend as a Service providers for webapps?” Kuzzle is ranked 2nd while deployd is ranked 9th. The most important reason people chose Kuzzle is:
Supports REST, WebSockets and MQ protocols.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
deployd is a free and open source BaaS solution.
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 Uses MongoDB as a database, which is known to corrupt data
MongoDB is reported to lose and corrupt data if faced with too much data to store.
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.