Newer versions of Maya (starting from Maya 2022) have switched to Python3, which led to incompatibility with older Python scripts. One of the well-known and loved script toolbox is called aTools. However, it is no longer supported in favour of animBot, which, unfortunately, isn't free.
In this little repo I've made a couple of fixes to convert the existing Python scripts to Python3. I also got rid of the motion trail, since newer versions of Maya have it out-of-the-box.
The installation is the same, you just download the aTools_install.mel file and drag-and-drop it to the Viewport. It'll attempt to download the archive and unpack it silently, however, if it'd fail, please proceed with the manual download from the Releases page.
I haven't tested it thoroughly, so some errors and bugs may occur, feel free to contact me.