Twitter Polls - Polls embedded in tweets
nodo - Manage your daily tasks in the command line
Simple Poll - The easiest way to create polls in Slack
Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.
Curious Polls - Answer a question once a day for the chance to win £100/$100
Commandline Challenge - Test your command line skills