# Syncthing [![Latest Build (Official)](https://img.shields.io/jenkins/s/http/build.syncthing.net/syncthing.svg?style=flat-square&label=unix%20build)](http://build.syncthing.net/job/syncthing/lastBuild/) [![AppVeyor Build](https://img.shields.io/appveyor/ci/calmh/syncthing/master.svg?style=flat-square&label=windows%20build)](https://ci.appveyor.com/project/calmh/syncthing) [![API Documentation](https://img.shields.io/badge/api-Godoc-blue.svg?style=flat-square)](http://godoc.org/github.com/syncthing/syncthing) [![MPLv2 License](https://img.shields.io/badge/license-MPLv2-blue.svg?style=flat-square)](https://www.mozilla.org/MPL/2.0/) This is the Syncthing project which pursues the following goals: 1. Define a protocol for synchronization of a folder between a number of collaborating devices. This protocol should be well defined, unambiguous, easily understood, free to use, efficient, secure and language neutral. This is called the [Block Exchange Protocol][1]. 2. Provide the reference implementation to demonstrate the usability of said protocol. This is the `syncthing` utility. We hope that alternative, compatible implementations of the protocol will arise. The two are evolving together; the protocol is not to be considered stable until Syncthing 1.0 is released, at which point it is locked down for incompatible changes. ## Getting Started Take a look at the [getting started guide][2]. There are a few examples for keeping Syncthing running in the background on your system in [the etc directory][3]. ## Getting in Touch The first and best point of contact is the [Forum][8]. There is also an IRC channel, `#syncthing` on [Freenode][4] (with a [web client][9]), for talking directly to developers and users. If you've found something that is clearly a bug, feel free to report it in the [GitHub issue tracker][10]. ## Building Building Syncthing from source is easy, and there's a [guide][5]. that describes it for both Unix and Windows systems. ## Signed Releases As of v0.10.15 and onwards, git tags and release binaries are GPG signed with the key D26E6ED000654A3E (see https://syncthing.net/security.html). For release binaries, MD5 and SHA1 checksums are calculated and signed, available in the md5sum.txt.asc and sha1sum.txt.asc files. ## Documentation Please see the [Syncthing documentation site][6]. All code is licensed under the [MPLv2 License][7]. [1]: http://docs.syncthing.net/specs/bep-v1.html [2]: http://docs.syncthing.net/intro/getting-started.html [3]: https://github.com/syncthing/syncthing/blob/master/etc [4]: http://www.freenode.net/irc_servers.shtml [5]: http://docs.syncthing.net/dev/building.html [6]: http://docs.syncthing.net/ [7]: https://github.com/syncthing/syncthing/blob/master/LICENSE [8]: https://forum.syncthing.net/ [9]: https://kiwiirc.com/client/irc.freenode.net/#syncthing [10]: https://github.com/syncthing/syncthing/issues