A purely in-memory PouchDB, as a custom build. Useful for things like quick unit tests, where you don't want to write any data to disk.
npm install pouchdb-memory
var PouchDB = require('pouchdb-memory');
var db = new PouchDB('mydb');
This build combines the following plugins:
pouchdb-adapter-memory
pouchdb-adapter-http
pouchdb-mapreduce
pouchdb-replication
pouchdb-find
Feel free to add additional plugins on top of it, or just build your own – the source code is tiny!