Tools
I build and maintain tools that support real-world translation workflows. Everything here is either open-source or source-available and built with working translators in mind.
Supervertaler
AI-enhanced CAT tool ecosystem
Supervertaler is an AI-enhanced CAT tool ecosystem with two products:
Supervertaler Workbench

Supervertaler Workbench is a free, open-source, cross-platform CAT tool (Windows, Mac, Linux) with multi-LLM translation, translation memory, glossary management, quality benchmarking, and concordance search. Includes two system-wide utilities: QuickLauncher (right-click AI prompt launcher) and QuickTrans (instant multi-engine translation popup). Supports import from memoQ, Trados (SDLXLIFF/SDLPPX), CafeTran, Phrase, and Déjà Vu.
Supervertaler for Trados

Supervertaler for Trados is a Trados Studio plugin bringing inline contextual terminology display (TermLens), an AI chat assistant, batch translation, and a prompt library directly into Trados Studio. One price, everything included: €20/month or €200/year (two months free). 14-day free trial, no credit card required.
- Product page
- RWS App Store
- Help documentation
- Source on GitHub
- 🎬 Getting Started screencast (16 min) – a walkthrough of all the basics
Beijerterm
Curated multilingual terminology database

Beijerterm is a curated, searchable multilingual terminology database for technical translators – Dutch, English, German, French and Spanish, and growing as new sources are added. It pulls together specialist glossaries and reference works gathered over a long translation career, with full provenance on every term: you can always see which glossary it came from, with author, year, languages and licence. Pick any source/target language pair, and equivalents and synonyms from different sources pool onto a single result card. Search runs server-side – you only ever get per-query snippets – and it’s free to use. It’s also built into Supervertaler as a SuperLookup resource.
SuperLookup
Terminology research across 40+ resources, one keystroke
SuperLookup is a free desktop app that lets you research a term across all your terminology sources at once – Beijerterm, IATE, Linguee, ProZ, Glosbe, termbases, corpora, Wikipedia and 40+ more – each in its own embedded, ad-free tab. Select a term in any application, press a single keystroke, and SuperLookup opens at the front with everything already searched, your logins remembered and trackers blocked – all in one window instead of scattered across your browser. No install, no account; Windows, macOS and Linux. It’s the standalone version of the SuperLookup feature in Supervertaler, and also comes built into the Supervertaler Workbench alongside your own termbases and translation memories.
WordCounter
Free, open-source word counting for translators
WordCounter is a free, open-source word counting engine for translators – built to challenge expensive CAT-era counting utilities with practical, transparent stats.
Beijer.ink
Personal markdown note-taking web app
Beijer.ink is a personal note-taking web app with inline markdown styling, nested notebooks, full-text search, and a clean, responsive UI. Built as a single-user app, accessible as a PWA on mobile. Source on GitHub.