40 Free Web Services & Tools To Monitor Website Downtime | SmashingApps.com
from Diigo
StatusCake | Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Change detection and notification - Wikipedia, the free encyclopedia
Versionista: track changes to any Web site
How to Monitor your Website’s Uptime with Google Docs
Download the #1 Free Timeline Maker for PowerPoint
diphur.com | home
Follow That Page - web monitor: we send you an email when your favorite page has changed.