Habitica - Habitica is a free habit building and productivity application.

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

Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.

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

SuperBetter - Empower youth mental health through schools and sports

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