XReply is a Chrome extension for X (Twitter) that finds posts with high viral potential before they blow up, and gets your reply in early — so when the post takes off, your reply rides along and gets seen too. The more you reply early, the more X's algorithm starts surfacing viral posts to you first. It never posts for you: it writes a draft in your voice, you paste and send it yourself. Free to start with 50 credits, then $15 one-time for 5,000 credits, no subscription.