Toby - Better Than Bookmarks

Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting

Session Buddy - Manage Your Browser Sessions

Curler - Dead Simple Free Uptime Monitoring

OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.

Go to Tab - Manage your chrome tabs easily when you're multitasking