I have two approaches to this: for my own use on different computers, I have scripts that sync the files using git (really I should be using git-annex or dropbo

I have two approaches to this: for my own use on different computers, I have scripts that sync the files using git (really I should be using git-annex or dropbox or similar); for sharing to-dos and so on with other people, I use org-trello, and they use trello.