Here's some more:
Barsuk Records -
http://www.barsuk.com (Death Cab for Cutie, Rilo Kiley)
Merge Records -
http://www.mergerecords.com (The Magnetic Fields, ...And You Will Know Us By The Trail Of Dead)
Jet Set Records -
http://www.jetsetrecords.com (Black Box Recorder, Mogwai)
Polyvinyl Records -
https://www.polyvinylrecords.com (Braid, Rainer Maria)
Initial Records -
http://www.initialrecords.com (Elliot, The White Octave)
Secretly Canadian -
http://www.secretlycanadian.com (Songs:Ohia, The Danielson Famile)