GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
NeoDownloader - As you know, there is a lot of websites with a lot of pictures, music and movies.
SmartGit - SmartGit is a front-end for the distributed version control system Git and runs on Windows, Mac OS...
Vov Picture Downloader - Download pictures from websites.
SourceTree - Mac and Windows client for Mercurial and Git.
Persepolis Download Manager - Persepolis Download Manager is a GUI for aria2.