Big Contacts
"Big Contacts is a web-based tool to help you to organize all of the information and activity about the people you work with and live with".

Collanos
"Built on reliable peer-to-peer technology, Collanos Workplace software allows you to work anywhere, anytime, both online and offline".

Goplan
"Goplan is an online project management solution. It allows teams and individuals to collaborate through tasks, file management, real-time chat, online calendaring, and many other features. As an always-on access-anywhere hosted solution it saves companies the trouble of purchasing, maintaining and securing a platform for collaboration".

huddle
"Huddle is a network of secure online spaces that combine powerful document, project & team tools with the simplicity of a social networking site". The free version allows for 5 users and 25MB of storage.

Kayuda
"Kayuda is a web-based visual wiki, a mindmapping tool and a non-linear writing tool that allows you to track ideas and the relationship between them. Its free and any number of people can colloborate simultaneously in real time. You can have any number of "wikis" (called workspaces), and you can choose how private to make them".

Thinking Rock
"Thinking Rock is a free software application for collecting and processing your thoughts following the GTD methodology".

Toggl
"Toggl is a free, online timetracker perfect for anyone who needs to manage their work hours: consultants, programmers, designers, etc."

Tungle
"Tungle is a light but powerful peer-to-peer (P2P) meeting coordinator. You can use Tungle to arrange meetings with friends, co-workers or business associates no matter where they are or what calendaring software they use".