keKit is a general tool-kit add-on for Blender from kjell, described as an all-in-one collection of scripts, tools, macros and pie-menus. It provides extensive options for customizing and optimizing workflows within Blender.
The kit is modular, composed of separate modules that can be enabled or disabled at your discretion. There are no preset shortcuts, so how it's set up is up to you.
The Blender Standard Version is now only available on GitHub. The developer maintains documentation, a WIKI, a release log, and installation and update instructions, along with a support page, a bug-report form and public discussions for users. keKit is distributed under a GPL license, published around three years ago by kjell, a Dev Fund contributor. A demo video is also available.