OntoWiki is a semantic collaboration platform for the development of Semantic Web knowledge bases. OntoWiki enables large distributed communities to collaborate on a semantic level, by allowing users to contribute small structured knowledge pieces, which stitched together may result in comprehensive knowlegde bases. Powl is Web-based ontology authoring and management solution for the Semantic Web. Both expose an extensive API for PHP programmers.
OpenMKS is a tool for searching and navigating multimedia collections of images, video, 3D models, and textual descriptions. It allows you to semantically integrate content from various sources and then expose the result using standards so it can be explored by users through their Web browsers or by other software applications over the Web as a servlet or Web Service.
SHORE (Semantic Hypertext Object Repository) is a hypertext repository that stores data about documents and data described by documents. Access to this information is provided as hypertext. The repository stores objects that appear in documents, together with their relations in a semantic net. Hypertext navigation follows these relations in the semantic net. The SHORE server works as an HTTP server, and the client is a standard Web browser. The repository uses PROLOG as its query language and the XSB system as its query engine.
The OpenUDDI project is focused on creating a high performance, easy to use UDDI v3 compliant server and client library. The server and client is built using Java, version 5 for the server and version 1.4 for the client. The server uses Hibernate, and supports a wide variety of SQL databases for data storage.
Osprey is a peer-to-peer enabled content distribution system. It is a metadata management system for software and document collections which enables local and distributed searching of materials. Items are available for download directly via an URL or indirectly via the BitTorrent peer-to-peer protocol. Two components exist: the Osprey Web application and permaseed (permanent seed). The Web application includes metadata management for finding and exploring available content, as well as a BitTorrent tracker.
PIVIAU is a PHP/MySQL Web based gallery for pictures, videos, and audio that supports tags and EXIF. Albums and pictures have searchable tag, country, city, place, date, subject, and author. An RSS feed is available for every seach you can do, or for recent pictures. There is an AJAX-powered slideshow. Pictures are resized using PHP GD image functions. Videos are viewable a la Google Video using a video flash player. Audio (WAV and MP3) is supported via the embed HTML tag. EXIF is supported via PHP exif functions to extract the picture date.
Piggydb is a flexible and scalable knowledge building platform that supports a heuristic or bottom-up approach to discover new concepts or ideas based on your input. You can begin with using it as a flexible outliner, diary or notebook, and as your database grows, Piggydb helps you to shape or elaborate your own knowledge. Piggydb is a Web application provided as a self-contained package that contains a Web server and database engine.
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.