# How to with JS?
now your tools, libraries may look cool, But are they easy/flexible to get your use case done?
How to build a live editor on web?
prosemirror (opens new window)
Which DB to use?
- couchdb (opens new window), written in Erlang document based DB. MapReduce Queries
- Change Feeds and replication
- pouchdb (opens new window), in browser version of couchDB