similarity: Text similarity calculation Toolkit for Java. 文本相似度计算工具包，java编写，可用于文本相似度计算、情感分析等任务，开箱即用。

OpenNARS for Research 3.0+

🤖 The Semantic Engine for Model Context Protocol(MCP) Clients and AI Agents 🔥

Wandora is a general purpose information extraction, management and publishing application based on Topic Maps and Java.

Openllet is an OWL 2 reasoner in Java, build on top of Pellet.

neonion is a user-centered collaborative semantic annotation webapp developed at the Human-Centered Computing group at Freie Universität Berlin.

The open source tools for building, maintaining and deploying Topic Maps-based applications.

an Ontology SDK

EXPLORE & EDIT REALITY

A tool to map and match CityGML datasets, as well as interpret their changes, all by using graphs.

Java library for connecting to sc-machine

Components of PSOATransRun system

Implementation of the SemVer Specification — strictly follows npm semantics

Hybrid semantic search engine developed by WESO combining directed text with template question answering

A tool for semantic textual similarity annotation

Semantic Version Annotation Processor

A key-value store that matches based on semantic similarity instead of exact lexical equality

STAN: an incremental semantic annotation tool for tables on the web

Sample project on reactive programming

LiFR, the Lighweight Fuzzy semantic Reasoner.