ShroomPen — Free Chrome extension to reply, rewrite, fix grammar and translate text with your own AI key
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ShroomPen at a glance
- Category
- Others
- Best for
- Solo Founder, Startup, SMB
- Agent compatibility
- Not listed
- Website
- shroompen.com ↗
- Last updated
- 29 Sept 2026
ShroomPen · screen 1About ShroomPen
ShroomPen is a free Chrome extension for practical writing in Gmail, LinkedIn, Google Docs and other web apps. It offers four actions: Reply, Rewrite, Fix Grammar and Translate, using context from the current page and selected tabs. You bring your own key for OpenRouter, OpenAI, Anthropic, Gemini, Ollama or LM Studio. It has no ShroomPen backend, telemetry or account, and a request preview shows what is sent.
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Frequently asked questions
Is ShroomPen free?
Yes, it is free with no subscription or ShroomPen account; you use your own AI provider key.
Which AI providers work?
OpenRouter, OpenAI, Anthropic, Gemini, Ollama and LM Studio or any OpenAI-compatible server.
Where does my data go?
Requests go directly from your browser to your chosen provider; there is no ShroomPen backend or telemetry.
Which browsers are supported?
Chrome, via the Chrome Web Store.
Is ShroomPen agent ready?
ShroomPen is not listed as Agent Ready or MCP Native on Maarket.
Who is ShroomPen best for?
ShroomPen is listed as a fit for Solo Founder, Startup, SMB teams.
What does ShroomPen do?
Free Chrome extension to reply, rewrite, fix grammar and translate text with your own AI key
What are the alternatives to ShroomPen?
Other Others products on Maarket include 10xJoy, Afterglow, AI Toolbox 3.0, AirPods 5, Appwrite 2.0, AppZapper 3000.
How is ShroomPen ranked on Maarket?
Purely by Karma Points earned from community actions — reviews, recommends, use signals and clicks. There is no pay-to-rank; sponsor placements are always clearly labeled.
Reach every team browsing this category. One sponsor per category, per week.