You could develop a spread sheet to track information about each website you have worked on.

For me, I prefer a free form data base like Evernote. I set up a notebook for Webpage Development and use tags to identify each website I need to track.

I also find Mastermind mapping to be a great way to visualize the structure of my website. There are many mastermind programs. My favorite is X-Mind. I’ve used Mindmiester and a few others, but I’m far from an expert on all the Mastermind programs available. Experiment and find what works best for you.