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Commandline Challenge - Test your command line skills
Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.
nodo - Manage your daily tasks in the command line
List Challenges - Earn points for your life experiences. Find lists that interest you, and mark off what you've done.
Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.
Life Listr - ***AS FEATURED BY APPLE***