CatLight - Shows build status in your tray
CCTray - Display continuous integration status from most build servers.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
WhatsON - Free and open-source build status monitoring for Windows with support for Jenkins, Travis-CI, CC.NET. Designed to notify developers or other collaborators about issues in the build pipelines.
PopTray - PopTray freeware e-mail checker written by Renier Crause.
Nevergreen - Winnipeg Pool and Spa Service.