...
- BuildScreen - a standalone Windows application to display TeamCity build statuses e.g. on a large screen.
- buildstatusnotifier - a way to see green/red page mirroring build status
- Cradiator - a standalone Windows application that displays a summary of project statuses.
- CI Monitor support - support for TeamCity in Big Visible Chart CI aggregator(from the comment)
- Google Chrome extension
- Growl Notifier
- Nabaztag Notifier
- tcMonitor
- tcPrettyEmail
- Team piazza
- Tux droid
- Twitter (announce), on github
- VersionOne, download, sources - by VersionOne
- WebHooks
- Windows 7 and Vista sidebar gadget
...
- Artifactory - Repository Manager Integration from JFrog
- Command Line Remote Run Tool
- Coriander.Haarlem - A test-driven set of plugins for TeamCity. Includes carrot and stick tabs and log grep
- Groovy plug - example for TeamCity extensions in Groovy. As a demo, adds time properties, resources locks.
- Page colorizer greasemonkey script - colors TeamCity pages background red/green depending on displayed builds status
- RedMine - original issue
- VersionOne, download, sources - by VersionOne
- VMWare - launches VMWare virtual machines using VMWare Player on demand
- Url Build Trigger - Adds build to the build queue when detecting change at the specified URL
...