: This is a free implementation of the MIX computer and its assembly language. You can download the source tarball from the GNU FTP site or through mirrors.
There are several distinct things called "MDK" that offer free downloads. Depending on what you are looking for, here are the most common options: Arm Keil MDK (Microcontroller Development Kit) : MDK Free Download
: SAP offers a "Free Tier" version to help developers build multi-channel mobile and web applications. You can start with their tutorials on the SAP Developers portal . : This is a free implementation of the
: If you use Visual Studio Code, you can install the Keil Studio Pack extension, which automatically provides a free community license. Depending on what you are looking for, here
: A specialized toolkit for Space Engineers scripts. The installer package (MDK.vsix) can be found on their GitHub Wiki .