...
- Android runner - builds Android package (.apk) from your Android project
- AppCode/Xcode runner - builds AppCode/Xcode project
- C# runner - write build task in C# right in web UI. (announcement, builds)
- Compress File - a build runner to pack a directory into a zip archive
- FTPUpload - a build runner to upload a folder to a remote FTP server
- NuGet support -
support for NuGet
- PowerShell runner
- easy run your PowerShell scripts from TeamCity (bundled since TeamCity 6.5)
- StyleCop runner
- XCode runner, and a fork
...