When comparing Kuzzle vs Loopback, 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 Loopback is ranked 5th. The most important reason people chose Kuzzle is:
Supports REST, WebSockets and MQ protocols.
Ranked in these QuestionsQuestion Ranking
Pros
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.
Pro Easy to get a project up and running
Easily and quickly get going.
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.
Con Strong-PM process manager
It's not required to run a loopback app and can be a pain to deal with.