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Unilexicon: taxonomy editor and tagging suite

Visual tool for managing controlled vocabularies
  • uses hypertree graphs to allow users exploring and editing vocabularies
  • helps users to comprehend relations in large taxonomies
Tagging tool for tagging resources using controlled vocabularies
  • use controlled vocabularies from the repository to tag your resources and web pages
  • works contextually as a Chrome browser extension

Content findability toolkit

Aiding data exchange, categorisation, classification and searching.

Create, Export, Import, Explore, Manage, Iteratively improve

  • Vocabulary, Classification, Taxonomy
  • Tagging in context

Standard technology: HTML+CSS+JS, Python

Standard formats: SKOS, JSON, Excel/CSV

Server Installation - Vocabulary editor & repository

Install Python, MySQL or your database of choice and all required packages.

pip install -r requirements.txt

Create database and add name, user and password to based on the text template provided.


./ migrate ./ runserver

For MySQL enable fulltext indexes.

ALTER TABLE concepts ADD FULLTEXT(name); ALTER TABLE concepts ADD FULLTEXT(description);

Import SKOS vocabularies from disk (or upload them later):

./ load_skos -r <directory of the vocabularies to import e.g.: /path/to/vocabs/>

Browser Installation - Tagging tool

User: In Chrome browser go to your vocabulary editor > click tagging > Install.

Developer: hit Wrench > Tools > Extensions > Expand + Developer Mode > Load unpacked extension > Choose folder to load sources from. It should be ./tag/


Graph visualisation the Jit
Templates, ORM, MVC Django
Frontend JS jQuery
Icons jQuery UI


  • taxonomy software
  • thesaurus software
  • visual thesaurus
  • thinkmap visual thesaurus
  • open source taxonomy management
  • ontology software
  • classification software
  • SKOS editor
  • online taxonomy software
  • classification software

Deployment notes

Static media files are served using Nginx, which serves as a reverse proxy. It sends requests for paths that do not exist on the disk to Gunicorn server.

Gunicorn listens on port 8080. nginx.conf proxy_pass is set to 8000 django dev server, so this needs changing for deployment.

Another important bit of the config file is:

add_header Access-Control-Allow-Origin...

This allows the Chrome tagging extension to get on with the AJAX Cross Site Scripting(XSS) security controls.

Tagging extension

Tagging extension for Google Chrome has a bit of configuration on top of the tag.js file. Unpacked code is in the /tag folder.

Dual Licensing

Commercial license

If you want to use Unilexicon to develop and run commercial projects and applications, the Commercial license is the appropriate license. With this option, your source code is kept proprietary.

Once purchased, you are granted a commercial BSD style license and all set to use Unilexicon in your business.

Small Team License (£2500) Small Team License for up to 8 developers

Organization License (£4500) Commercial Organization License for Unlimited developers

Open source license

If you are creating an open source application under a license compatible with the GNU GPL license v3, you may use Unilexicon under the terms of the GPLv3.


Unilexicon: Taxonomy editor and tagging suite



GPL-3.0, BSD-3-Clause licenses found

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