Projects / zsync


zsync is a implementation of rsync over HTTP. It allows updating of files from a remote Web server without requiring a full download or a special remote server application. It uses a metafile, which is created on the server, to determine which parts of a file the user already has; it then downloads the remaining parts via HTTP. No special server or Web server module is needed. It also works with gzip files, and content on the server can be compressed to further reduce download times.

Operating Systems

Recent releases

  •  20 Sep 2010 13:20

    Release Notes: Various bug fixes and performance improvements were made.

    •  28 Apr 2009 20:58

      Release Notes: This release fixes support for certain gzip files; fixes compilation on Mac OS X; and has various minor bugfixes.

      •  24 Jan 2009 20:20

        Release Notes: Bugs were fixed, including a possible segmentation fault and problems making zsync files for large compressed downloads. Also, the mtime on downloaded files are now preserved.

        •  06 Aug 2006 13:27

          Release Notes: This release uses large file support wherever possible. Compilation problems on some older/unusual systems were fixed.

          •  08 Jul 2006 20:03

            Release Notes: HTTP basic auth support was added. The -s option was made more effective.


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