Csync-android is a project mainly written in C and SHELL, based on the GPL-2.0 license.
csync is a lightweight utility to synchronize files between two directories on a system or between multiple systems.
It synchronizes bidirectionally and allows the user to keep two copies of files and directories in sync. csync uses widely adopted protocols, such as smb or sftp, so that there is no need for a server component. It is a user-level program which means you don’t need to be a superuser or administrator.
If you want to contribute to the development of the software then please join the mailing list. Patches are accepted preferebly created with git and we are always glad to receive feedback or suggestions to the address [email protected]. More information on the various mailing lists can be found at http://www.csync.org/communication/.
You can also get the sourcecode straight from the git repository - see https://dev.csync.org/wiki/GetTheSource
As a user you can find a userguide which is shipped with this package or is available at the website. For developers there is doxygen documentation and comments in the source code itself. See
http://www.csync.org/userguide/ and http://www.csync.org/api/