- Museum Finland
- ONKI Ontology Server
- Freebase is an open, shared database of the world's knowledge
- ALEKS - Web-based artificially intelligent educational software
- Exo's Web Desktop
- paggr: portable web semantics
- AdaptiveBlue's BlueOrganizer
- dapper
- Kapow Technologies
- Pipes
- Solvent
- Piggy Bank
- Semantic Bank
- Teqlo
- Wikidentity
- BioPAX
- neuroweb
- IkeWiki
- mSpace
- Centiare
- Semantic MediaWiki
- Geni
- dbpedia
- Query Wikipedia
- Geo-Names
- Iris
- Nepomuk
- gnowsis - A framework for a personal semantic desktop system
- DeepaMehta is a software platform for Knowledge Management.
- FoaF Explorer
- foafnaut
- FilmTrust
- Many Eyes! View your data, ask questions, and share your discoveries
- Malibu View your data, ask questions, and share your discoveries
- InFlow 3.1 - Social Network Mapping Software
- Babble
- Semantic Search - The SHOE Search Engine
- ZoomInfo.com
- Kaukolu
- SWiM: A Semantic Wiki for Mathematical Knowledge Management
- Disco - Hyperdata Browser
- Objectviewer
- OpenLink RDF Browser
- Joost
- Garlik
- Spark
- The Open Agent Architecture
- Tagomizer
- Semantic Tool Online
- Hakia -search for meaning
- Query Detection and Extraction - QDEX - System
- Ontological Semantics (OntoSem)
- SemanticRank Algorithm
- Dialogue Algorithm
- enIRaF
- Grisino
- Makna
- Semantic Web Assistant
- Radar Scone
- Radar The Test Harness
- Radar 1.0
- Sensebot
- NEPOMUK - The Social Semantic Desktop
- SchemaLogic
- Semantic Tool Online
- Content Development Tool