MidSider is made to be used in Reaper, however, it should work in any DAW that supports a single track to handle at least 6 channels.
MidSider3 will give any plugin mid-side processing capabilities. With this version, it will also give you the ability to use the left or the right channel as well as a regular stereo operation to check how it will sound if processed normally without the need of leaving the plugin.
Download for Patreons:
https://www.patreon.com/posts/download-hub-74683988