rncbc.org a.k.a. Rui Nuno Capela

is there a midi sequencer with automation in linux?
I guess you're asking for MIDI plug-ins automation. MIDI is kind of automation per se, so that you have means to record and play all controller events as every MIDI sequencer does for that matter.

Anyway, my next plan will be finishing DSSI and VSTi plug-in integration, a long overdue feature. Only after that, I'll concentrate on stuffing automation in Qtractor. You'll have to be patient because... I'm doing all this in my spare time :) and BTW, donations are always welcome, either in cash or in code forms; although I do prefer the latter, you choose which is best to let your preferred feature get ready sooner:))

Cheers