IPFS is a peer-to-peer distributed file system that seeks to connect all computing devices with the same system of files. In some ways, IPFS is similar to the Web, but IPFS could be seen as a single BitTorrent swarm, exchanging objects within one Git repository. In other words, IPFS provides a high throughput content-addressed block storage model, with content-addressed hyperlinks. This forms a generalized Merkle DAG, a data structure upon which one can build versioned file systems, blockchains, and even a Permanent Web. IPFS combines a distributed hashtable, an incentivized block exchange, and a self-certifying namespace. IPFS has no single point of failure, and nodes do not need to trust each other.

Gitchain is an application of the exciting ideas behind Bitcoin, Namecoin and DHT applied to Git hosting. Once you install it, it acts as a local proxy to the entire Gitchain P2P network.

Secure messaging for everyone, coming soon
With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.

pidgin plugin: http://tox.dhs.org/

A collection of interesting new networks and tech aiming at decentralisation (in some form).