[elviejo]

There is also verso / recto that uses the same technique.

https://github.com/nickpascucci/verso

I actually wish for a tool that would use two things: 1) navigate code like a file system: Class/function/lines [3..5]

2)allow us to use git commit revisions so that we could comment on the evolution of the code

So far the only thing capable has been leoEditor + org-babel