REAPER, a digital audio workstation and MIDI sequencer software for Windows, macOS and Linux, was updated to version 6.0 recently, getting support for embedding small versions of some plugins into the tracks and mixer panels, new auto-stretch timebase, improved support for Retina / HiDPI displays, and more.
Initially released back in 2005, REAPER (Rapid Environment for Audio Production, Engineering, and Recording) is developed by Cockos, an American digital audio technology company founded by Justin Frankel of Winamp and Gnutella peer-to-peer network fame.
The music production application had its first native experimental Linux release back in July 2018, and since then it has continued to improve, though it's still considered experimental on Linux.