Riff

Riff is a free Chrome extension that helps you reply on X, LinkedIn, Facebook and Instagram. You paste your rough point. Gemini Nano, the AI built into Chrome, writes a fresh reply for that exact post. You read it, edit it if you want, and press send yourself. Riff also answers your DMs in LinkedIn Messaging, Messenger on facebook.com and Instagram Direct. When a chat is new, it writes the first message. It can draft your own posts too. Drop in rough notes, ask for changes in plain words, and pick a hook you like. You set how it sounds. Choose how smart, how salesy and how bold the reply should be. Tell Riff once who you are and how you write, and it follows that voice. Each draft is checked against your recent replies, so it does not repeat itself. Everything runs on your computer. There is no account, no API key, no server and no monthly bill. Your notes, drafts and history stay in Chrome on your machine. Riff never posts or sends anything for you. Riff needs desktop Chrome 138 or newer, about 22 GB of free disk for the one-time model download, and a GPU with more than 4 GB of video memory, or 16 GB of RAM and 4 CPU cores.

Riff is a Chrome extension that drafts replies to social posts, comments, and direct messages, and helps users write their own posts and first messages. It uses the point a user provides, the surrounding post or conversation, and chosen settings to produce text for the specific context. The page says it aims to avoid repetitive, templated wording and invented results or details. Riff fills the relevant text box, while the user reviews the draft and sends or posts it themselves. Riff opens in Chrome’s side panel and reads the post, conversation, or post box selected by the user. The user can add rough notes, adjust settings such as tone, length, and sales approach, and generate a draft. For posts, they can request hooks, ask for revisions in plain words, or repurpose the draft for another site. Riff inserts the result into the relevant box but does not send it. Gemini Nano runs on the computer after a one-time model download. Riff is for people writing replies, direct messages, and social posts on X, LinkedIn, Facebook, and Instagram. The page describes use for personal and company brands, with separate Voices and sample posts for each. It runs in desktop Chrome 138 or newer, works on Windows, Mac, Linux, and Chromebook Plus, and does not require an account or API key. Its drafts stay on the user’s computer, and the user decides whether to send them.