Stream Notifier

Stream Notifier is a browser extension for following livestreamers and receiving alerts when they go live. It supports Twitch, YouTube, and Kick, and it is presented as a way to avoid missing streams from selected channels.

Its core behavior is simple: after adding streamer URLs, the extension sends instant notifications when those channels go live. The feature list also includes faster verification in the PRO plan, custom notification sounds by channel, intelligent filters for specific games or categories, a floating mini-player, priority support for PRO users, and an unlimited history of previous streams in the paid plan. The free tier covers one channel, basic notifications, verification every five minutes, and limited history, while PRO increases the channel limit to 30 and checks every two minutes.

Stream Notifier is available for Chrome and Firefox, and it also works in Edge and other Chromium-based browsers. The setup flow shown on the site has three steps: install the extension from the Chrome Web Store, add channel URLs, and receive notifications automatically. The product page says installation does not require registration, and the FAQ says no credit card is needed to start. It is also described as free to begin, with PRO offered as a one-time payment of $4.99 for lifetime access, without subscriptions.

The page describes 10,000+ active users and a 4.8-star rating, and it includes Spanish and English language options.