Today the extensions platform becomes generally available in the development version of Blender.

Blender's platform is a leading open-source 3D creation suite, offering insights into 3D modeling, animation, and rendering. Through tutorials, documentation, and community forums, Blender provides insights into creating stunning visual effects, animations, and interactive experiences. Artists and designers can learn about Blender's powerful features, such as sculpting tools, rigging, and physics simulations, to bring their creative visions to life.

Blender

Blender's extensions platform is now available in the development version and will be officially released in Blender 4.2 LTS. The platform allows users to install, enable, and update add-ons and themes directly from Blender's preferences. Extensions can be manually installed or obtained from online repositories. The platform also introduces permissions for add-ons to make users more aware of their behavior. Multiple repositories can be added, and Blender's official extensions website hosts free community-maintained extensions.

Extensions Platform Beta Release — Developer Blog