Quieta is a local-first data masking application for professionals who use AI on confidential documents. It runs entirely on your own machine: no data ever reaches Quieta's servers, and no account is required to start.
Quieta protects three surfaces. The clipboard, for desktop AI apps. A Chrome extension, for web AI such as ChatGPT, Claude.ai, Gemini and Perplexity. And Mirror, a pair of synchronised folders for AI coworkers such as Claude Cowork, Mistral Work and Codex for Work: your folder holds the real files, the agent's folder holds masked copies, and files the agent produces come back to you with the real values restored automatically, in both directions, in real time.
Detection is pseudonymisation, not deletion. Each real value maps to a pseudonym stored locally, so the AI keeps a coherent, readable document to work on, and you get a complete answer back with your own names, clients and figures in place. Quieta covers names, emails, addresses, phone numbers, IDs, IBANs and EU-specific identifiers, in Word, Excel, PowerPoint, PDF, CSV and code files, across English, French, Spanish, and more.
Quieta is built for lawyers, consultants, HR and R&D teams, and privacy-conscious individuals who need to use AI without handing over client data. It is not an enterprise gateway or a cloud proxy: cloud redaction happens after the data has already left your machine, which is too late.
Quieta runs on macOS and Windows. Free plan at 0 EUR, Plus at 7 EUR/month billed yearly, Pro at 15 EUR/month billed yearly with Mirror included. 30-day money-back guarantee on paid plans.
