ExtensionBooster is a growth platform for developers of browser extensions and apps, helping them improve discovery, build trust, and track performance across digital marketplaces. It supports listings on the Chrome Web Store, Edge Add-ons, Google Play, and Workspace Marketplace, with iOS App Store support described as coming soon.

The platform connects developers who want reviews with community members who install and try apps before providing feedback. ExtensionBooster says reviews are written by real users, checked for visibility on the store, and charged for only after they go live. Developers can start for free, purchase credits, or earn credits by reviewing other apps; eligible unused credit packs may be refundable under its stated policy.

Alongside review services, ExtensionBooster offers market analytics for installs, ratings, rankings, keywords, and competitors, as well as a shareable, SEO-indexed developer showcase page. Its tools include icon and screenshot utilities, a converter for migrating from Manifest V2 to V3, extension and app discovery tools, and documentation.