I use a combination of two items.
1) a carboy tag. this shows the souirce (kit or recipe) and the various measurements and activities. if I have a comment to myself (EG 'bottle after Sept 28th'), a sticky note in a contrasting colour is used.
2) a WORD file on the computer (one per calendar year). I don't track a lot of details here, just the basics. It has various sections, ie In Progress, Completed, On the Shelf, Future Considerations, Limited Release Announcements.
In the past I also used a spreadsheet. Each column represented a carboy or primary, and each row a weekend. It was used to plan activities. I don't use it anymore because I have a couple of extra carboys, and I'm better at planning the activities these days.
Steve