Repositories list

• ontop

  Public
  Ontop is a platform to query relational databases as Virtual RDF Knowledge Graphs using SPARQL

  javasparqlowl+ 5

  javasparqlowlontopr2rmlobdavirtual-knowledge-graphvkg

  Java

  •

  Apache License 2.0

  •182182 forks•826826 stars•9696 issues•77 pull requests•Updated Apr 17, 2026Apr 17, 2026

• ontop.github.io

  Public

  ontop/ontop.github.io’s past year of commit activity
  https://ontop-vkg.org

  HTML

  •11 fork•00 stars•00 issues•00 pull requests•Updated Feb 24, 2026Feb 24, 2026

• ontop-website

  Public
  New website for Ontop, including the documentation for Ontop >=3.0

  q

  •1818 forks•66 stars•88 issues•1010 pull requests•Updated Feb 24, 2026Feb 24, 2026

• ontop-api-examples

  Public

  ontop/ontop-api-examples’s past year of commit activity
  Ontop API examples

  Java

  •

  Apache License 2.0

  •66 forks•99 stars•11 issue•33 pull requests•Updated Feb 16, 2026Feb 16, 2026

• obda-mixer

  Public

  ontop/obda-mixer’s past year of commit activity
  Java

  •00 forks•11 star•00 issues•00 pull requests•Updated Jun 23, 2025Jun 23, 2025

• ontop-examples

  Public
  Examples of Ontop in related publications and tutorials

  HTML

  •

  Apache License 2.0

  •2020 forks•3131 stars•00 issues•22 pull requests•Updated Jun 10, 2024Jun 10, 2024

• dialect-factory-scaffolding

  Public
  Scaffolding tool to simplifying the implementation of a new dialect adapter for Ontop

  Java

  •

  Apache License 2.0

  •00 forks•11 star•11 issue•00 pull requests•Updated Jun 29, 2023Jun 29, 2023

• ontop-tutorial

  Public
  Mirror of the files at https://github.com/ontop/ontop-website/tree/master/.vuepress/public/tutorial . Do NOT push commits here as they would be lost after redep…

  q

  •77 forks•1010 stars•00 issues•00 pull requests•Updated Apr 21, 2023Apr 21, 2023

• ontop-3rd-party-maven-repo

  Public
  Maven repository for publicly-available artifacts not available on Maven central and involved in Ontop projects.

  11 fork•00 stars•00 issues•00 pull requests•Updated Feb 28, 2023Feb 28, 2023

• ontop-dockertests

  Public

  ontop/ontop-dockertests’s past year of commit activity
  Docker images for ontop testing

  PLSQL

  •

  Apache License 2.0

  •22 forks•22 stars•66 issues•11 pull request•Updated Jan 16, 2023Jan 16, 2023

• protege

  Public
  Protege Desktop

  Java

  •

  Other

  •279279 forks•00 stars•00 issues•00 pull requests•Updated Oct 22, 2022Oct 22, 2022

• vig

  Public
  Virtual Instances Generator

  Java

  •

  Apache License 2.0

  •11 fork•33 stars•00 issues•33 pull requests•Updated Jun 21, 2022Jun 21, 2022

• ontop-patterns-tutorial

  Public
  patterns-tutorial

  Shell

  •

  Creative Commons Zero v1.0 Universal

  •22 forks•99 stars•11 issue•00 pull requests•Updated Apr 22, 2022Apr 22, 2022

• ontop-r2rml-test-cases

  Public
  00 forks•00 stars•00 issues•00 pull requests•Updated Apr 26, 2021Apr 26, 2021

• r2rml-test-cases-support

  Public
  Python scripts to generate EARL-based report from R2RML test-cases

  Python

  •

  Apache License 2.0

  •55 forks•00 stars•00 issues•00 pull requests•Updated Apr 26, 2021Apr 26, 2021

• r2rml-implementation-report

  Public
  revive & keep alive R2RML implementation report

  Python

  •

  Apache License 2.0

  •55 forks•00 stars•00 issues•00 pull requests•Updated Feb 28, 2021Feb 28, 2021

• npd-benchmark

  Public
  OBDA-specific benchmark based on the Norwegian Petroleum Directorate FactPages (NPD FactPages) data.

  q

  •

  Apache License 2.0

  •77 forks•88 stars•00 issues•00 pull requests•Updated Dec 6, 2020Dec 6, 2020

• ontop-build-dependencies

  Public archive
  Some dependencies for building ontop distribution (deprecated)

  00 forks•00 stars•00 issues•00 pull requests•Updated Aug 15, 2019Aug 15, 2019

• calcite

  Public
  Mirror of Apache Calcite

  Java

  •

  Apache License 2.0

  •2.5k2.5k forks•00 stars•00 issues•00 pull requests•Updated Aug 24, 2018Aug 24, 2018

• ontoprox

  Public
  Ontoprox is a system for OBDA with expressive ontologies.

  Web Ontology Language

  •

  Apache License 2.0

  •00 forks•11 star•00 issues•00 pull requests•Updated Apr 7, 2016Apr 7, 2016

• iswc2014-benchmark

  Public
  Python

  •

  Apache License 2.0

  •11 fork•11 star•00 issues•00 pull requests•Updated Nov 17, 2014Nov 17, 2014