BucketList.net - Bucket list ideas, advice and support
Habitica - Habitica is a free habit building and productivity application.
Life Listr - ***AS FEATURED BY APPLE***
LifeRPG - Automatically prioritize your goals and gain XP for achieving them. Features:
Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.