ownCloud is an online file synchronization and sharing solution. It's easy to use as consumer-grade product, but can be hosted on private servers or data centers. It integrates with existing IT business infrastructure as well, and this allows to constrain and customize security and functional requirements. It comes with a simple user interface for file uploading, viewing or editing, contacts and calendars, bookmarks and media files.
Access, share and protect your files, calendars, contacts, communication & more at home and in your enterprise. Keep all of your life / business private and secure on a server you control. Share with only who you choose, and no-one else.
Persy is a single file transactional storage with support of consistency and two phase commit
Redis is a key-value cache and storage system. It allows for complex data structures, with keys being representable as strings, hashes, lists, sets, or ordered sets, bitmaps, and hyperloglogs.
Scalaris is a distributed and transactional key-value, store with early and full ACID support. Scalaris is implemented in Erlang, uses a structured overlay with a non-blocking Paxos commit protocol for transaction processing with strong consistency over replicas.