Platypus Wiki is an enhanced Wiki Wiki Web with ideas taken from Semantic Web. It offers a simple user interface for creating Wiki page plus metadata according to W3C standards. It uses RDF (Resource Description Framework), RDF Schema, and OWL (Web Ontology Language) to create ontologies and manage metadata.
Catalyzer is a powerful and flexible cataloging system that lets you easily organize and maintain structured records about almost anything. It gives you menus, lists, file selectors, buttons, and many more options to let you set up structures to make information entry as efficient and reliable as possible. Operating in server mode, it can expose catalogs and, optionally, the files they refer to across the Web.
AnnotateIt! is an open source electronic response system targeted at composition instructors and students. It allows a user to annotate HTML and provides facilities for group interaction. Annotations may be either hyperlinked or inline, depending on the user's preference. It also features reporting of meta information (annotation types and counts), predefined annotations, community annotations, conversion of documents to HTML for annotation, easy document management, and an assignments calendar.
EZ Reusable Objects (EZRO) is a Web application that can be used by non-technical staff to manage content as "objects." Content objects containing text, video, and audio can be shared, modified, and re-styled to appear via a traditional Web site, an on-line course, an innovative "Coach," or as a community of interest site. It is highly scalable and can be used for public Web sites, secure environments, and private intra/extranets.
Haystack is a powerful tool designed to enable each and every individual manage all of her information in the way that makes the most sense. By removing the arbitrary barriers created by applications that only handle certain information "types", and recording only a fixed set of relationships defined by the developer, users can define whichever arrangements of, connections between, and views of information they find most effective. Such personalization of information management will dramatically improve your ability to find what you need when you need it.