Show HN: time tracking in Emacs without Org-mode

I like the automatic time tracking, but why is this a web service? I'd prefer not to send data to a remote service unless necessary, and I can see absolutely no reason why this should be a remote service.

In case you're interested in what it looks like WITH org-mode:

http://doc.norang.ca/org-mode.html

This is a great tutorial on an end-to-end org-mode setup, with very in-depth time tracking. Note that most people don't go to quite this length, but it's nice when someone does and documents it.

A lot of good stuff here. I've been using org-mode haphazardly for a few years, mostly for time tracking and organizing project notes and plans. I've also used it for estimating on a few occasions. I want to figure out how agendas work.

The idea is interesting. But I'm not sure it works as a complete time tracking solution. Is there any way to log other time to a project or client (time that is not spent editing a file in emacs, but should still be tracked to the project).

Also using an online service and (maybe to a lesser extent) a dependency on Python seems potentially problematic. If I'm working, but not online, what happens?

Any solutions available for vim?

The underlying web service, https://www.wakati.me/ mentions Vim integration.