Tracks
To get an overview of my todo's I used to list them in google tasks. Back in time I was convinced it would nicely integrate with all tools software and distributions I would use. After some month's I figured out it wouldn't.
So I searched on the web for software which would take that task over from google. I used to play with several tools, from trac, to chiliproject to redmine. All those tools worked very nice but were some overkill to only manages todo lists.
In the meantime I installed gitlabhq, tried to abuse the issues there to manage …