If you are looking for the "full feature" set available in the 6.x series, REAPER provides a complete professional studio environment:
: Refinements were made to automation items, specifically improving the logic for "chasing" automation at the end of an item and adding preferences for recording into existing non-selected automation items. cockos-reaper-6-70
: Compatible with VST, VST3, AU, LV2, and CLAP formats, plus hundreds of built-in studio-quality effects. If you are looking for the "full feature"
: The version refined how REAPER handles media, including consolidating undo points when adding multiple takes to a project. : Powerful multichannel routing throughout
: Powerful multichannel routing throughout, allowing any track to send or receive from any other.
: Users can modify keyboard shortcuts, menus, toolbars, and mouse modifiers.
For a deep dive into using these features, Cockos provides extensive official resources: REAPER | Audio Production Without Limits