Open Source research tool to search, browse, analyze and explore large document collections by 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, …

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

A stand-alone web server application for building and publishing full fledged dictionary websites and APIs for any language.

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

Offline database of synonyms/thesaurus

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

Türkçe Eşanlamlı Kelimeler Sözlüğü (Turkish Thesaurus)

A Flutter Thesaurus made for Byteconf Flutter 2020

Open Source Thesaurus of Job Titles in US English

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

Search Powerthesaurus synonyms and antonyms from Alfred

Merriam-Webster Thesaurus in Emacs

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)

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

Custom Apple Dictionary support dark mode and offline pronunciation

SKOS-Play allows to print SKOS files in HTML or PDF. It also embeds xls2rdf to generate RDF from Excel.

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

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

Validate, convert and improve SKOS vocabularies

An online SKOS editor