Am using:
AriaMaestosa | Freeware, open-source midi sequencer and editor. Compatible with Windows, MacOS, and Linux.Reaper | Optional/encouraged payware (unlimited evaluation) $60-$225 USD, complete DAW application. Compatible with Windows, MacOS, and Linux
WavePad | Optional payware (Home-use option is free), audio editing software. Compatible with Windows and MacOS.
Have used:
Onlinesequencer | Free, browser-based midi sequencer.LMMS | Freeware, open-source daw application. Compatible with Windows, MacOS, and Linux.
Music Maker | Payware $50-$140 USD (30-day free-trial). Compatible with Windows.
Music Box Maniacs | Free, browser-based, music-box centric midi sequencer.
MuseScore | Freware, open-source, music notation software. Compatible with Windows.
Signal | Free, browser-based midi sequencer.
BuildingBeats |