Codegeist ends August 4th, submit your add-on now to get your shot at $10,000! Trello has joined JIRA, Confluence, and other Atlassian products in Codegeist with its own special prize. $10,000 will go to the team or person who builds the best Trello Power-Up and adds it to the public listing. Check out http://www.codegeist.com today for more details.
Where can I learn more about building Power-Ups?
Get started building a Trello Power-Up with Trello's Developer Site. There you'll find documentation on building Power-Ups, example projects, and more info.
Not sure what to build? Check out the Trello board of ideas for Power-Ups that users have asked for!
You can submit your Trello Power-Up for review at https://developers.trello.com/submit-your-app