Supervertaler Workbench

AI-enhanced translation workbench built with Python. Work with ChatGPT, Claude, and Gemini simultaneously. Built by translators, for translators and writers.

Download Free View on GitHub

Multi-LLM: GPT-4 • Claude • Gemini • Ollama Translation Memory Terminology Management CAT Tool Integration Okapi File Filters Cross-Platform

Source Figure 1 shows the dowel rod and...

Target Figuur 1 toont de deuvelstaaf en...

Features

Everything you need for professional translation work

📚

Okapi Framework File Filters

Battle-tested Okapi Framework localization filters run as an automatic background sidecar. Full round-trip DOCX with exact formatting preservation.

Full round-trip DOCX import and export, including hyperlinks
Semantic formatting tags (<b>, <i>, <u>)
SRX segmentation and proper paragraph detection
More formats coming: XLSX, PPTX, HTML, IDML

🤖

Multiple AI Providers

Choose from the best AI models for your translation needs.

OpenAI GPT-4o & GPT-4 Turbo
Anthropic Claude Opus, Sonnet, Haiku
Google Gemini 2.5 Pro/Flash
Local models via Ollama

💾

Translation Memory

Lightning-fast batch pre-translation with fuzzy matching and TMX import/export.

Batch pre-translation (30x faster)
Fuzzy + exact matching
Auto-confirm 100% TM matches
TMX format support

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2-Layer Prompt Architecture

System Prompts (auto-selected by mode) + Unified Prompt Library with folders, favorites, and multi-attach.

Layer 1: System Prompts (CAT tags, auto-selected)
Layer 2: Prompt Library (unlimited folders)
AI Assistant for prompt generation

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Bilingual Review Interface

Grid, List, and Document views for reviewing AI translations. Professional CAT tool interface.

Status tracking (Draft/Reviewed/Confirmed/Locked)
Multi-selection (Ctrl/Shift)
Grid pagination for large projects

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CAT Tool Integration

Import/export bilingual tables from memoQ, CafeTran, and Trados Studio.

memoQ DOCX support
CafeTran pipe formatting
Trados bilingual tables

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PDF Rescue (AI OCR)

Transform badly-formatted PDFs into clean, editable documents with GPT-4 Vision OCR.

One-click PDF import
Smart redaction/stamp handling
Professional DOCX export

Get Supervertaler

Free, open-source, cross-platform

Latest release

Supervertaler Workbench

AI-Enhanced Translation Workbench

Okapi file filters, multi-LLM translation, translation memory, terminology management, AI Assistant, and more. Built with PyQt6.

Download for Windows Download for macOS (Apple Silicon)

Installation

The easiest way to get started is to download the ready-to-run package for your operating system. No Python, no terminal – just download, extract, and run.

RECOMMENDED

Windows

All-in-one package – no Python required.

Download, extract, run
No Python or terminal needed
Windows 10 or later

Download for Windows

RECOMMENDED

macOS (Apple Silicon)

All-in-one package – no Python required.

Download, extract, run
No Python or terminal needed
M1 / M2 / M3 / M4 Macs

Download for macOS (Apple Silicon)

On an Intel Mac? See the pip option below.

Prefer pip? (advanced users, Intel Mac, Linux)

If you already have Python 3.10+, you can install Supervertaler from PyPI:

                        pip install supervertaler
                    

Then run supervertaler from the terminal. View on PyPI →

Intel Mac & Linux: Word/Excel/HTML import uses a small Java helper. If it’s not on your system, install Java 17 once: brew install --cask temurin@17 on Mac, or your distro’s default JRE on Linux. Plain-text translation works without it.

Screenshots

See Supervertaler in action

Click to enlarge

Term & NT Insert Popup

Press Ctrl once to open a floating popup listing all glossary matches and non-translatables for the current segment.

Click to enlarge

QuickTrans & Modern UI

QuickTrans instant translation popup with MT engines and LLMs. Global hotkey works from any application.

Click to enlarge

AI Assistant

Conversational AI assistant with file attachments, prompt generation, and document analysis.

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Dark Mode

Complete dark theme with properly styled UI panels. Easy on the eyes for late-night sessions.