Bitcoinproof creates a forgery-proof timestamp for your data, secured by the Bitcoin network. It allows you to prove that a certain event happened before a certain point in time. Maybe you want to prove that the damage in your flat already existed when you moved in, or that you were in possession of a great artwork before it was published, proving you are the author.
CheckApp will serve as a basis for a free (as in freedom and as in beer) social network, so that anyone will be able to check out and modify the code, or deploy this application in their own server. It will also try to minimize the usage of personal information, so there would be no privacy problems.
Co-Ment is a Web service for annotating, discussing, and writing texts online. The editing environment is wiki-like, supporting many syntaxes (Markdown, RST, and HTML), and allows for finely controlled layouts including tables and images. Users can comment on extracts of the text, and advanced comment navigation features allow new annotations to be discovered or the history of a debate to be browsed. It is also possible to set up an email alert for text edits or new comments. Import/export is supported for many formats including TXT, DOC, ODT, and HTML.
The Community Builder (CB) suite extends the Joomla! user management system, and allows you to use Joomla! to build a customizable social networking Web site. Its key features are extra fields in a profile, enhanced registration workflows, user lists, connection paths between users (friends), administrator-defined tabs and user profiles, image upload, front-end workflow management, and integration with other components, like PMS, Newsletter, Forum, and Galleries. Many plugins are available for adding more features. CB is compatible with all versions of Joomla! 1.5 native, Joomla! 1.0.x native, and Mambo 4.5.2-4.6.5. CB allows multi-criteria user searches, full field controls of core fields, AJAX email and username checkers, image and integer fields, custom validations, and many more features.
Crabgrass is social networking, group collaboration, and network organizing Web application. It consists of a solid suite of group collaboration tools such as private wikis, task lists, a file repository, and decision making tools. Work is currently being done on a large user interface overhaul, better social networking tools, blogs, and event calendars, as well as better support for collaboration and decision making among independent groups.