Opera Add-ons
Opera Norway AS
Browser
Opera's official catalog for Chromium-based WebExtensions, free to publish but subject to slow human moderation.
Onboarding$0
CommissionNo store commerce system; extensions are distributed free
Moderate· L2
Domain
Browser app marketplaces
Web browsers whose extension ecosystems let developers change the browsing experience for end users.
2 marketplaces in this directory match this tag.
Safari Extensions
Apple Inc.
Browser
Safari's browser extensions, distributed only as App Store apps under Apple Developer Program terms and full App Review.
Onboarding$99/year Apple Developer Program membership
CommissionStandard App Store terms: 30%, or 15% under the Small Business Program
Advanced· L3