Aeris Calendar
Aeris Calendar is a desktop calendar with current weather conditions, forecasts and severe weather alerts. Aeris Calendar allows you to easily add reminders, daily notes, todo lists and events such as birthdays and anniversaries. The 10-day forecast is displayed directly on the calendar and... When severe weather hits your area, Aeris Calendar provides several options to alert you and will give you a detailed description of the alert. ... The customizable tray icon allows you to display any current condition directly on the icon, such as current temperature, humidity, wind speed and more.
http://download.aeriscalendar.com/AerisCalendar-Install.exe - 749Kb - Download - Screenshot

AdsenseAlert
Track and Monitor your Google AdSense account from your desktop. Reports for Ad's, Search, and Payment history. Includes system tray icon, and an alert system to help alert you to click fraud. You are able to print and save graphs, and reports. Allows you to email reports in case of excessive... Stop logging into AdSense just to see your current stats and try Adsense Alert today! ... Free updates to the program are included with purchase.
http://www.adsensealert.com/files/AdsenseAlertTrial.exe - 2Mb - Download

AlertPingPro
While your hosts are hanging-up,your income is falling. Stop it with "AlertPing"! Alert Ping verifies accessibility of your host computers! It is used for 'pinging' IPs, f. e. computers in your local area network or in the internet. Build a list of TCP/IP devices (computers, printers, and other... After issuing a ping request, the program waits for a reply, if AlertPing receives a failed ping request, different alarm and alert messages can be sent. ... The program runs as a minimized system tray icon.
http://www.psgsoft.com/apprinst.zip - 656Kb - Download - Screenshot

AlertPing
While your hosts are hanging-up,your income is falling. Stop it with "AlertPing"! Alert Ping verifies accessibility of your host computers! It is used for 'pinging' IPs, f. e. computers in your local area network or in the internet. Build a list of TCP/IP devices (computers, printers, and other... After issuing a ping request, the program waits for a reply, if AlertPing receives a failed ping request, different alarm and alert messages can be sent. ... The program runs as a minimized system tray icon.
http://www.psgsoft.com/apinst.zip - 656Kb - Download - Screenshot

Mailbox Verifier
Mailbox Verifier (MV) is a small free software that will notify you about new messages arrived to your mailbox. The number of mailboxes MV can check is unlimited; it works with the POP3 protocol and can't deal with web-interface mailboxes and IMAP-servers. ... New message alert can be combined from blinking program icon in tray, sound alert and/or pop-up window as you like. ... MV is tactful enough to disable window pop-up while screen saver is running, and can hold back from attempting to check mail when there is no Internet connection.
http://www.mailutilities.com/mv/mv.zip - 214Kb - Download - Screenshot

Talking Reminder
Never forget another event again with this great looking reminder and calendar that even talks to you! Talking Reminder will keep track of your important events and remind you about them using speech, sound, alert window, email, or file execution. Talking Reminder is fun and easy to use. ... You can set it up so that if you are not around to see the alert pop-up - it will send you an email if it fails the specified number of times. ... For example - a bill payment will show a nice dollar sign icon on your calendar and pre-select a monthly recurrence option.
http://www.softwareriver.com/download/talkingreminder_20.exe - 2Mb - Download - Screenshot

7Way Email Checker
7Way Email Checker is a full-featured notification system that alerts you when new messages arrive in your POP3 e-mail account. It's easy to configure and it offers advanced notification options. You can set the software to check unlimited e-mail accounts at specified intervals and it can be... Configure the customizable system-tray icon to flash when new messages arrive and also to notify you via user-defined sound alert. ... Flash tray icon notification. ... Customize the tray icon. ... Messages deletion rules.
http://www.start7way.com/download/setup.exe - 513Kb - Download - Screenshot

SnapMail
SnapMail is the cross-platform private messaging and file transfer utility for your office. Instantly send messages, files, reminders, and alerts on your network. Unlike instant messaging, SnapMail uses peer-to-peer technology and does not rely on Internet servers to send mail within your local... - In addition to regular mail messages, send "Snaps" that notify the recipient with an alert pop-up. ... Respond directly to Snaps with a single mouse click using preconfigured "SnapBacks" (e. ... SnapMail features include: - Seamlessly send files between Macintosh and Windows computers.
http://www.glassbead.com/download/files/SM4_WinInstaller.exe - 10Mb - Download - Screenshot

Axence NetTools
Host monitoring with alerting and long term charts of response time & packet lost. With alerting you can set e-mail, message, sound, and tray notifications. Other features: graphical ping, fast traceroute (full trace in 1 second), lookup, port scanner, TCP/UDP service scanner, network scanner... It has the most highly intuitive user interface and may run in the Icon tray to continuously monitor hosts. ... Free and Pro versions. ... ), and full SNMP browser.
http://www.axencesoftware.com/Download/NetTools2.exe - 6Mb - Download - Screenshot

Traylook Add-in for Outlook
Traylook runs in the system tray and provides unobtrusive notifications of new email in selected Outlook folders, using a colorful MSN-style popup window. You can quickly glance at the incoming messages as they scroll by one at a time. Read/Delete email directly by clicking links in the... -Outlook's standard tray icon is replaced with Traylook's more informative color-coded icon. ... from the tray icon menu. ... You can customize the color of the popup window, limit notifications to selected folders, select an alert sound and more.
http://www.pergenex.com/traylook/setup.exe - 1Mb - Download - Screenshot