Community hub
Recent from talks
Knowledge base stats:
Talk channels stats:
Members stats:
UBlock Origin
uBlock Origin (/ˈjuːblɒk/ YOO-blok) is a free and open-source browser extension for content filtering, including ad blocking. The extension is available for Firefox and Chromium-based browsers (such as Chrome, Edge, Brave, and Opera).
uBlock Origin is actively developed and maintained by its creator and lead developer Raymond Hill and the open source community. As of December 2025[update], the Chrome version of uBlock Origin had over 29 million active users and the Firefox version has over 10 million active users, making it the most popular extension on Firefox.
The development of uBlock Origin (uBO) came about by forking the codebase of HTTP Switchboard, an extension designed to give users control over browser requests. uBlock, which was the predecessor of uBlock Origin, was further influenced by uMatrix, another browser extension created by forking HTTP Switchboard.
HTTP Switchboard was initially released on September 20, 2013. It enabled users to control the types of requests made by their browser, providing a way to block specific types of web content. However, development of HTTP Switchboard ceased on May 18, 2015.
Following the end of HTTP Switchboard's development, uMatrix was introduced on October 24, 2014.
This extension, designed for advanced users, acted as a request firewall, allowing users to control browser requests across two main dimensions: the domains and subdomains to which requests were sent, and the types of requests (such as cookies, images, XMLHttpRequest, frames, and scripts). uMatrix retained much of the user interface from HTTP Switchboard, but significantly expanded its functionality, offering a more granular level of control over web requests.
The evolution of these extensions laid the foundation for uBlock, combining elements from both HTTP Switchboard and uMatrix while streamlining the user experience for broader accessibility.
Development of uMatrix continued for several years alongside development of uBlock Origin, with uMatrix being posed as a blocking option that was "definitely for advanced users".
Hub AI
UBlock Origin AI simulator
(@UBlock Origin_simulator)
UBlock Origin
uBlock Origin (/ˈjuːblɒk/ YOO-blok) is a free and open-source browser extension for content filtering, including ad blocking. The extension is available for Firefox and Chromium-based browsers (such as Chrome, Edge, Brave, and Opera).
uBlock Origin is actively developed and maintained by its creator and lead developer Raymond Hill and the open source community. As of December 2025[update], the Chrome version of uBlock Origin had over 29 million active users and the Firefox version has over 10 million active users, making it the most popular extension on Firefox.
The development of uBlock Origin (uBO) came about by forking the codebase of HTTP Switchboard, an extension designed to give users control over browser requests. uBlock, which was the predecessor of uBlock Origin, was further influenced by uMatrix, another browser extension created by forking HTTP Switchboard.
HTTP Switchboard was initially released on September 20, 2013. It enabled users to control the types of requests made by their browser, providing a way to block specific types of web content. However, development of HTTP Switchboard ceased on May 18, 2015.
Following the end of HTTP Switchboard's development, uMatrix was introduced on October 24, 2014.
This extension, designed for advanced users, acted as a request firewall, allowing users to control browser requests across two main dimensions: the domains and subdomains to which requests were sent, and the types of requests (such as cookies, images, XMLHttpRequest, frames, and scripts). uMatrix retained much of the user interface from HTTP Switchboard, but significantly expanded its functionality, offering a more granular level of control over web requests.
The evolution of these extensions laid the foundation for uBlock, combining elements from both HTTP Switchboard and uMatrix while streamlining the user experience for broader accessibility.
Development of uMatrix continued for several years alongside development of uBlock Origin, with uMatrix being posed as a blocking option that was "definitely for advanced users".