Dat (data sharing)
From Just Solve the File Format Problem
dat is a tool/API for storing data, usable as a command line interface, a node.js (JavaScript) library, and a REST API (using JSON). It can be configured and used with add-on libraries to handle a number of database backends and file formats, but has default storage methods built in (using LevelDB and files in the local filesystem). It is designed to be able to pull in data from multiple sources of a wide variety of formats and update a database, preserving changes at both ends. It is also intended to be used for peer-to-peer file downloads.
