BucketList.net - Bucket list ideas, advice and support
BucketListly - The most beautiful & advanced bucket list you will ever have
Life Listr - ***AS FEATURED BY APPLE***
Extension Boilerplate - Build cross browser extensions for Chrome, Firefox & Opera
Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.
YouTube Vanced - Vanced is a modded version of YouTube with many features such as adblocking and background playback