Systran: our review

Systran translates text, Office or PDF documents and entire websites, with an engine born in 1968 — well before machine translation became a market. The vendor, French, is today part of the ChapsVision group, known for its tools aimed at the public sector and defense. That origin shows in its offer: Systran is one of the few players in this comparison to offer a deployment that never leaves the client's computer or network.

What it actually does

Everyday use goes through Translate PRO, an online offer billed per user: translation of text, and of Office and PDF files while keeping their layout, custom glossaries, browser extension. A legal team translating contracts on an ongoing basis gets what it needs without installing anything. A company handling sensitive data — assessment files, investigation reports, classified documents — can instead choose Translate Server: the translation engine then runs on the client's own infrastructure, with no connection to Systran's servers for the translated content. An intelligence service, a law firm or a hospital then never needs to send a confidential text to a third party to have it translated.

Why it interests us

It's the argument that neither DeepL nor generic translators offer as directly: not just hosting data in the European Union, but keeping it from leaving the client's information system at all. For a French SMB or firm bound by a strict confidentiality obligation (professional secrecy, health data, public procurement), that's an infrastructure argument, not just GDPR compliance. On the online offer itself, the terms of service are explicit: submitted text serves no purpose beyond the requested translation, and it's deleted as soon as the service is delivered. We point teams we support on audit and advisory work about their data sovereignty toward this kind of tool, particularly in the legal sector.

Where it falls short

Self-hosting, precisely, has no listed price: Translate Server is reserved for "large enterprises" according to its own product page, and access goes through a quote. A small organization that wants this level of confidentiality without the means of a large enterprise has no pricing visibility before calling sales. Second reservation: the free online translation tool does exist, but none of the pages consulted publishes a quantified quota — impossible to know in advance where the free tier stops, unlike a competitor that displays its monthly character quota. Third, more conventional, point: Translate PRO tiers are billed per user, from $17.99 to $49.99/month depending on commitment and volume; opening the tool to a whole team directly multiplies the bill.

Our recommendation

Systran deserves a first look from any French organization for whom the question isn't "is my data hosted in Europe" but "can my data stay with me." For that specific need, it's currently the clearest option in this comparison. For everyday translation use without that requirement, compare the per-user price with DeepL first before choosing.