I'm a bit surprised that Simplenote [1] wasn't mentioned here. It would automatically sync with nvALT.<p>If you're digging further, the relevant keywords are "ubiquitous capture." I first became familiar with it through 43 Folders [2], and its take on Getting Things Done.<p>[1] <a href="http://simplenote.com" rel="nofollow">http://simplenote.com</a> - iOS / Android / Mac / Kindle<p>[2] <a href="http://www.43folders.com/topics/ubiquitouscapture" rel="nofollow">http://www.43folders.com/topics/ubiquitouscapture</a>