# Riff
> Free Chrome extension that writes fresh replies for any post, on your computer
- URL: https://riffreply.com
- Visit (tracked): https://promoteindex.com/go/riff
- Category: other
- Built with: other
- Pricing: free
- Votes: 0
- Tested by PromoteIndex: no. Not tested by PromoteIndex yet. Use at your own risk.
- Listed: 2026-10-27
- Tags: chrome-extension, ai-writing, social-media, productivity
Riff is a free desktop Chrome extension that turns your rough point into a fresh reply for any post on X, LinkedIn, Facebook or Instagram. It uses Gemini Nano, the AI built into Chrome, so it runs on your computer with no account, no API key and no servers. It also answers DMs and drafts your own posts, and never posts or sends for you.
Listing: https://promoteindex.com/p/riff

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