Monitoror : Monitoror is a wallboard monitoring app to monitor server status; monitor CI builds progress or even display critical values. Monitoror is a single fi...
TrackingTheTrackers.com : A free analysis tool to check if a website is disguising third-party trackers as first-party trackers.
SlimerJS : A scriptable browser for Web developers
SeaLion : View raw output for critical events across servers. SeaLion gives you a graphical overview of server activity. View performance of system/custom metri...
Buildbot : Buildbot is an open-source framework for automating software build, test, and release processes.
Free open source web page change detection. Simply monitor which websites had a text change.