iBucket - A social bucket list apps that helps you achieve your goals & trips. Available for iOS, Android and Web. Dream it. Plan it. Do it.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
BucketListly - The most beautiful & advanced bucket list you will ever have
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
BucketList.net - Bucket list ideas, advice and support
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.