Tracking

Good old paper and pencil (OR pen) lol
I have a 3 ring binder with tabs for weight, food gender*/weight, date and if he ate or not, his weight, shed dates, temp / humidity / cleaning schedule, and a notes section.
I record weight after every shed.



*He seems to refuse male f/t rats more than female. and he strikes female rats faster and with less zombie dancing. Males I often have to brain. IDK - he's a strange snoot

I use Microsoft Excel and sorta combine eating and shed/weight all into it. But just transferred from index card and a notebook.

I use OpenOffice Calc, which is pretty much the same as Microsoft Excel, but free. :P

Nothing like a good ol' spreadsheet to keep track of everything. Each snake has it's own page that I update whenever they shed, eat, or poop. (And after the former I weigh them). The only exception is hatchlings. They get a shared clutch page until sold.

I use index cards, quick and easy and the fact that I have a ton of them.