On Thu, Dec 10, 2015 at 3:51 AM, Brent Busby <brent@keycorner.org> wrote:

Between Seq24 and Non-Sequencer though, there are two programs
addressing a very similar need with a similar type of application, each
with its own unique critical bugs.  It would be nice if someone could
fix one of them though, because the on-the-fly loop sequencer concept is
very nice and worth doing.

and then there's always softwerk:

   https://freesoftwaremusic.files.wordpress.com/2015/01/softwerk-01.png

or rather, there isn't :(