Thetudu lets you find your common free time with your friends, by comparing your calendars. You can also you create group & public calendars, especially useful for teams and schools.
Nimber is a social delivery service that connects people who want to send something, with people going that way anyway.
Peopleperhour is a freelance marketplace. The key feature that differentiates it from others is that freelancers can also sell their services in a fixed price. That services called Hourlies™.
Noise texture generator is a personal open source project that lets you create noisy background images quickly online. Made using canvas and HTML5 API.