ProofKey
Grammarly-style checks and rewrites in Chrome via your own LLM key, or keyless checks on a model in your browser. No backend, no telemetry.
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[](https://ossdrop.com/tool/proofkey)Frequently asked
What is ProofKey?
ProofKey is an open-source productivity tool — Grammarly-style checks and rewrites in Chrome via your own LLM key, or keyless checks on a model in your browser. No backend, no telemetry. It is written in TypeScript.
Is ProofKey free and open source?
Yes. ProofKey is free and open source, released under the MIT license. You can view and contribute to the source at https://github.com/jiru-labs/proofkey.
What language is ProofKey written in?
ProofKey is primarily written in TypeScript.
What are open-source alternatives to ProofKey?
Other open-source productivity tools on OSSDrop include PowerToys, Excalidraw, AppFlowy, Cal.com.
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