JWt (Java Web Toolkit) is a library for developing accessible and interactive Web applications with an API that is widget-centric and inspired by desktop GUI APIs. To the developer, it offers abstraction of Web-specific implementation details, including graceful degradation. Under the hood, the library uses the latest techniques when available to handle events and update the user interface.
Tine 2.0 is a Web-based groupware solution that focuses on usability and correctness. To achieve these goals, the project uses usability experts and covers most of the code by unit tests. It contains support for contacts, tasks, calendar, email, CRM, VoIP integration, a time tracker, ActiveSync, and a flexible rights management system.
Nearforums is a lightweight powerful discussion forum that can be installed within minutes on Linux or Windows servers with MySQL or MS SQL database servers. It includes great features like sign-in with Facebook/Twitter, navigation with tags, full Web administration, built-in search engine, RSS feeds, and accessible HTML. It is SEO friendly.
Kune is a distributed social network focused on collaboration rather than just on communication. It focuses on online real-time collaborative editing (Wave-based), decentralized social networking (federation), and Web publishing, while focusing on workgroups rather than just on individuals. It aims to create online spaces for collaborative work where organizations and individuals can build projects online, coordinate common agendas, set up virtual meetings, publish on the Web, and join organizations with similar interests. It has a special focus on Free Culture and social movements needs.
betterFORM is an implementation of the W3C XForms 1.1 Recommendation. It allows easy creation of highly dynamic Web 2.0 user interfaces with attractive controls and layout. You can add validations, calculations, actions, and events to build complete Web applications in a declarative way.
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.
MojoMojo is a Web2.0 wiki with AJAX live preview, hierarchical structure, tags, diffs, pluggable syntax, permissions/ACL, attachments, RSS feeds, a photo gallery, edit conflict resolution via 3-way merge, themes/skinning, localization, built-in full-text search, and a reverse index. Since it's built on top of the Perl Catalyst Web framework, MojoMojo supports any Web server, and includes its own standalone one. It also support any database backend supported by the DBIx::Class ORM, and has been successfully tested with PostgreSQL, SQLite, and MySQL.