Realm is very cool technology, but the lack of a browser variant is a show-stopper for us. Our clients want web, iOS and Android versions of the apps we build. We really don't want to build our own CRDT syncing, I'd love to evaluate your stuff.
Thanks for the kind words and feedback! We are very interested in exposing Realm in the browser, especially in the context of Realm Mobile Platform to sync with mobile devices. However, right now we don't have any specific details. The Node.js SDK is first step in that direction since it can power REST API from Realm data.
Disclosure: We're a competitor. If you need browser support check out https://github.com/amark/gun , it runs on all major browsers and can be embedded into native apps and has realtime CRDT sync out of the box. Fully MIT / ZLIB / Apache 2 licensed.
Check out PouchDB, too. Open-source, cross-browser, and quite mature. Works in Node as well. Syncs with Couchbase. Couchbase also has an embedded native database for Android, iOS and several other platforms that can coexist with PouchDB. https://pouchdb.com/http://www.couchbase.com/nosql-databases/couchbase-mobile (Disclosure: I work for Couchbase.)