Living solo is great. But there is a chance that someone gets incapacitated and can not call for help. TheLifeSigns service sends a daily email with a lifesign button. In case you are not able to press the button, TheLifeSigns automatically sends requests to your buddies to check in on you. This can be life saving.
OnGuardHelp - Travel & Location
Crystal Alarm - Mobile phone alarm A personal alert strengthens your safety in risky situations, threatening situations and for lone workers.
Staying Alive - Free AED Locations worldwide
Kitestring - Keep tabs on your well-being.
SmartWatcher - SmartWatcher Oy
Emergency Alert - Alberta Emergency Alert