Open Semantic Search Engine and Open Source Text Mining & Text Analytics platform (Integrates ETL for document processing, OCR for images & PDF, named entity recognition for persons, organizations & locations, metadata management by thesaurus & ontologies, search user interface & search apps for fulltext search, faceted search & knowledge graph)

A command-line dictionary (thesaurus) app, with access to multiple sources, written in Go.

Multi-language Thesaurus Query and Replacement plugin for Vim/NeoVim

Türkçe Eşanlamlı Kelimeler Sözlüğü (Turkish Thesaurus)

Find synonyms in 15 different languages directly from your terminal.

Open Source REST API for named entity extraction, named entity linking, named entity disambiguation, recommendation & reconciliation of entities like persons, organizations and places for (semi)automatic semantic tagging & analysis of documents by linked data knowledge graph like SKOS thesaurus, RDF ontology, database(s) or list(s) of names

Web application for management formal representations of knowledge, like controlled vocabularies, taxonomies, thesauri and glossaries

Merriam-Webster Thesaurus in Emacs

Open Source Thesaurus of Job Titles in US English

Python/Django based webapps and web user interfaces for search, structure (meta data management like thesaurus, ontologies, annotations and named entities) and data import (ETL like text extraction, OCR and crawling filesystems or websites)

📘 A simple yet powerful dictionary to get synonyms of Persian words in real time.

Search Powerthesaurus synonyms and antonyms from Alfred

syn - the thesaurus

A Flutter Thesaurus made for Byteconf Flutter 2020

Android app with rhyming dictionary, thesaurus, and dictionary, with text-to-speech functionality to read your poem.

End-2-end multi-label classification in python

Validate, convert and improve SKOS vocabularies

Automatic tagging and analysis of documents in an Apache Solr index for faceted search by RDF(S) Ontologies & SKOS thesauri

SKOS-Play allows to print SKOS files, and convert them from Excel.

A stand-alone server for building and publishing dictionary websites. Single binary Go application.

Look up English synonyms, antonyms, etc with powerthesaurus.org

Linguistic Datasets for Portuguese: Lista de conjuntos de dados linguísticos para língua portuguesa com licença flexíveis: banco de dados, lista de palavras, sinônimos, antônimos, dicionário temático, tesauro, linked data, semântica, ontologia e representação de conhecimento

An online SKOS editor

Offline database of synonyms/thesaurus

RDT: Russian Distributional Thesaurus (Русский Дистрибутивный Тезаурус)

HunSpell dictionary and MyThes thesaurus for the Luxembourgish language.

A command line tool for searching word-related APIs.

Spell checker, morphological analyzer & thesaurus for Icelandic

Web based editor for SKOS based ontologies