Freeplane - Freeplane is a powerful and free software for building mind maps.

Listography - Create your lists, preserve your story, and stay inspired.

vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.

List Challenges - Earn points for your life experiences. Find lists that interest you, and mark off what you've done.

Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.

Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.