- JSON API - API to emulate Hudson's JSON one. e.g. usable for XFD. See also TeamCity's bundled REST API
- Sharp2City - .Net API for TeamCity REST API (announcement)
- TeamCitySharp - *.NET Library to access TeamCity via REST API (newer take).
- Dependencies Graph - visualizing dependencies between build configurations. announcement
- Pivot report - based on the new pivot viewer control for Silverlight, a proof on concept for displaying TeamCity projects/buildtypes/builds (announcement)
- Configuration TFS backup - a separate .Net application that monitors TeamCity server configuration files and can automatically check the changes into TFS
- User Roles Report - a plain list report to list all projects and all users with their roles in the projects.