Parse Server is a 
Parse API compatible router package for Node.js/Express.js.
The open source Parse Server makes it possible to serve the Parse API from any infrastructure that can host Node.js applications. Parse Server provides a way for you to keep your application running without major changes in the client-side code, once you have your data in your own database. The client SDKs support changing the API server location to direct them to your own. This also lets you use the Parse client SDKs with entirely new applications that have no dependency on the Parse hosted services.
Parse Server was built in Node.js and works with the Express web application framework. It can be added to existing web applications, or run by itself.
Basic options:
databaseURI (required) - The connection string for your database, i.e. mongodb://user:pass@host.com/dbname
appId (required) - The application id to host with this server instance
masterKey (required) - The master key to use for overriding ACL security
cloud - The absolute path to your cloud code main.js file
fileKey - For migrated apps, this is necessary to provide access to files already hosted on Parse.
Client key options:
The client keys used with Parse are no longer necessary with parse-server. If you wish to still require them, perhaps to be able to refuse access to older clients, you can set the keys at intialization time. Setting any of these keys will require all requests to provide one of the configured keys.
clientKey
javascriptKey
restAPIKey
dotNetKey
Advanced options:
filesAdapter - The default behavior (GridStore) can be changed by creating an adapter class (see FilesAdapter.js)
databaseAdapter (unfinished) - The backing store can be changed by creating an adapter class (see DatabaseAdapter.js)
