Opera Add-ons
Opera Norway AS
Opera's official catalog for Chromium-based WebExtensions, free to publish but subject to slow human moderation.
Raycast Technologies Ltd. · Browser & OS extension stores
The Raycast Store is the extension marketplace for Raycast, a macOS (and now cross-platform) productivity launcher. Extensions are built in React and TypeScript against Raycast's Node-based API, giving developers a rich UI toolkit for building keyboard-driven commands that integrate external tools directly into the launcher.
Publishing is distinctive: rather than uploading a binary, developers open a pull request against Raycast's public raycast/extensions monorepo. Community Managers review PRs first-in-first-out, and all published extensions must be open source under the MIT license, which makes review transparent and code-auditable. There is no store payment layer — Raycast monetizes through its own Pro subscription, not extension sales — so extensions are free. Raycast ships a built-in OAuth2 helper for connecting to services, and many extensions store API keys in preferences. Notably, Raycast supports AI Extensions, letting its AI/agent features call extension tools, which makes the store relevant for AI-agent integrations.