Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Replicator - Easily replicate database table data - even with heterogeneous databases.
Better Uptime - We call you when your website goes down