Alert Bookmarks 

Alert Bookmarks keeps track of your favorite Web sites, and automatically validates them as you work. Alert replaces the bookmark function of your browser, freeing your bookmark data to be used with any browser. Extensive import and export features.
bookmark bookmarks favorites check checker validate validator hyperlink web page viable webmaster

LinkAlertPC 

The cost effective link monitor and alert notification system - LinkAlertPC (LAPC) can monitor basic TCP/IP, Internet HTTP based servers/pages/urls, Email, FTP, LAN connections, Printers, Services, Stocks and Local devices.
linkalertpc linkalert link monitor notification disk email file folder ftp http https tcp

netChimes 

netChimes is a must for anyone who runs a website! A hybrid of a webcounter and an instant messenger, netChimes receives alert messages from your server whenever a user accesses a netChimes-enabled page, and plays a notification sound on your desktop
netchimes webmaster visitor count log weblog statistics messenger

Guard Web 

monitor a site data and connection time and alert threw mail or phone.
site http monitor mail phone network connection delay news

Guard Web Pro 

monitor a site data and connection time and alert threw mail or phone.
site http monitor mail phone network connection delay news web database.

Phonotics Alert Engine 

Receive instant alert messages about stock prices at Yahoo, mortgage rates at Wells Fargo, local events at Ticket Master, movie releases at Blockbuster, political news updates at Washington Post, etc.
alerter monitor content instant free personal secure news updates release stock price phone