Transept

Transept is a web-based translation workspace aimed at people who need more than literal, word-for-word machine translation. Users upload documents (DOCX, PDF, Markdown, or plain text) and work in a side-by-side editor that shows the source and translated text together. A feature the team calls Decision-Context Memory keeps track of approved translations along with the reasoning behind them and any alternatives that were rejected, feeding that context back into the model so later translations in the same project stay consistent. Teams can also build shared glossaries and style guides that apply across documents and languages. The tool supports twelve languages and offers sentence-level regeneration, so a single line can be rewritten with custom instructions without disturbing the rest of the page. Built-in comment threads and shareable links let translators, editors, and clients collaborate without emailing files back and forth, and content can be imported from or exported to Notion, Google Drive, and standard translation-memory formats (TMX/XLIFF). It is aimed at translators, localization teams, and content creators publishing across languages, particularly for narrative or brand-voice-sensitive writing. The free tier covers 1,500 words a month; paid plans start at €29/month for 100,000 words. It was built by two writers, not a translation-industry company, which shows in its focus on tone over raw throughput.