## [Parse Server](https://github.com/parse-community/parse-server) - ~16K stars
* javascript based
* mongodb or postgres database
* Has dockerfile

## [Appwrite](https://github.com/appwrite/appwrite) - ~2.5K stars
* docker based
* includes advanced security features
* cross-platform: supports web, native, backend, and mobile apps)
* sdks for js, node, typescript, python, php, ruby. 

## [nakama](https://github.com/heroiclabs/nakama) - ~2.2k stars
* go based
* cockroach db
* designed for use with games

## [Apache Usergrid](https://github.com/apache/usergrid) - ~900 stars 
* Java based 
* cassandra database

## [kuzzle](https://github.com/kuzzleio/kuzzle) - ~600 stars
* javascript based
* custom db? elasticsearch storage?
* maybe no asset storage (unless can use the persistent data api)

## [CloudBoost](https://github.com/CloudBoost/cloudboost) - ~1.3k stars
* JS based
* mongodb database

## [SkyGear](https://github.com/SkygearIO/skygear-server) - ~300 stars
* Seems v. complete but not many users (harder to fix issues)
* Go based

## [para](https://github.com/Erudika/para) - ~300 stars
* database agnostic
* java based

## [loopback 4](https://github.com/strongloop/loopback-next) - ~1.6k stars
* More of an api development platform than a BaaS, added here because could be good starting point if developing own BaaS
* Javascript based



Platform as a service? Is one needed alongside BaaS? Dokku markets itself as mini heroku, maybe a good one to try first
(e.g. Flynn, tsuru, openshift, dokku, cloud foundry)