The Semantic Web is an extension of the World Wide Web through standards set by theWorld Wide Web Consortium (W3C). The goal of the Semantic Web is to make Internet data machine-readable.

This can be seen in various aspects of web development, one beingsemantic HTML as a way to give yourmarkup meaning,microformats likeschema.org orlinked-data likejson-ld. Another aspect is from the opposite perspective: Reading and interpreting data. This can be done with metadata viaRDF.

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.

• UpdatedNov 4, 2025
• Python

🍵 Drop-in semantic styling library in pure CSS. Highly customizable and perfect for simple websites and prototyping web apps!

• UpdatedSep 13, 2025
• CSS

A JSON-LD Processor and API implementation in JavaScript

• UpdatedOct 29, 2025
• JavaScript

A curated list of various semantic web and linked data resources.

• UpdatedJul 20, 2025

JSON-LD TypeScript types for Schema.org vocabulary

• UpdatedOct 5, 2025
• TypeScript

Contextualise is an effective tool particularly suited for organising information-heavy projects and activities consisting of unstructured and widely diverse data and information resources

• UpdatedApr 9, 2025
• Python

Extract embedded metadata from HTML markup

• UpdatedOct 1, 2025
• Python

DefraDB is a Peer-to-Peer Edge-First Database. It's the core data storage system for the Source Ecosystem, built with IPLD, LibP2P, CRDTs, and Semantic open web properties.

• UpdatedNov 5, 2025
• Go

A curated list of amazingly awesome articles, people, applications, software libraries and projects related to the knowledge management space

• UpdatedMar 14, 2025

DBpedia Spotlight is a tool for automatically annotating mentions of DBpedia resources in text.

• UpdatedMar 8, 2018
• Scala

Configurable Generation of Synthetic Schemas and Knowledge Graphs at Your Fingertips

• UpdatedJul 11, 2024
• Python

JSON-LD processor written in Python

• UpdatedNov 5, 2025
• Python

The low-code Knowledge Graph application platform. Apache license.

• UpdatedNov 4, 2025
• XSLT

🔗 Semantic MediaWiki turns MediaWiki into a knowledge management platform with query and export capabilities

• UpdatedNov 3, 2025
• PHP

(subjective) overview of projects which are related both to python and semantic technologies (RDF, OWL, Reasoning, ...)

• UpdatedJun 22, 2025

Type-checked Schema.org JSON-LD for React

• UpdatedJun 18, 2024
• TypeScript

A curated list of ontology things

• UpdatedSep 10, 2025

Linked Open Data Modeling Language

• UpdatedNov 5, 2025
• Python

RDF.rb is a pure-Ruby library for working with Resource Description Framework (RDF) data.

• UpdatedJul 15, 2025
• Ruby

Eclipse RDF4J: scalable RDF for Java

• UpdatedNov 6, 2025
• Java