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Trello logo.svg
Initial releaseSeptember 13, 2011; 7 years ago (2011-09-13)
Operating systemWeb application
TypeProductivity software

Trello is a web-based list-making application originally made by Fog Creek Software in 2011, that was spun out to form the basis of a separate company in 2014[1] and later sold to Atlassian in January 2017.[2] The company is based in New York City.[3]


Trello was released at a TechCrunch event by Fog Creek founder Joel Spolsky.[4] Wired magazine named the application in September 2011 one of "The 7 Coolest Startups You Haven't Heard of Yet".[5] Lifehacker said "it makes project collaboration simple and kind of enjoyable".[6]

In 2014, it raised $10.3 million in funding from Index Ventures and Spark Capital.[7]

In 2015, Trello launched third-party integrations with tools such as Slack, GitHub and Salesforce for its paying users. In 2016, Trello opened this platform to additional developers with the launch of its "Power-Ups Platform" for developers wanting to integrate their services with Trello.[8]

In May 2016, Trello claimed it had more than 1.1 million daily active users and 14 million total signups.[9]

On January 9, 2017, Atlassian announced its intent to acquire Trello for $425 million. The transaction was made with $360 million in cash, while the remaining $65 million was made with shares and options. Trello had earlier sold 22% of its shares to other investors with the remaining majority held by founders Michael Pryor and Joel Spolsky at the time of acquisition.[10][11]

In December 2018 Trello announced its acquisition of Butler, the company that developed a Power-Up for automating tasks within a Trello board.[12]


Trello has a variety of work and personal uses including real estate management, software project management, school bulletin boards, lesson planning, accounting, web design, gaming and law office case management.[13] A rich API as well as email-in capability enables integration with enterprise systems, or with cloud-based integration services like IFTTT and Zapier.


According to a Fog Creek blog post in January 2012, the client was an extremely thin web layer which downloads the main app, written in CoffeeScript and compiled to minified JavaScript, using Backbone.js[14] HTML5 .pushState() and the Mustache templating language.[15] The server side was built on top of MongoDB, Node.js and a modified version of[15]


On January 26, 2017, PC Magazine gave Trello a 3.5 / 5, calling it "flexible" and saying that "you can get rather creative," while noting that "it may require some experimentation to figure out how to best use it for your team and the workload you manage."[16]

See also[edit]


  1. ^ "A Special Announcement: Trello is now part of Trello, Inc". Retrieved July 24, 2014.
  2. ^ Pryor, Michael. "Trello Is Being Acquired By Atlassian". Retrieved February 2, 2017.
  3. ^ "10 Hot Startups In NYC". Retrieved November 2, 2016.
  4. ^ Rao, Leena (September 13, 2011). "Joel Spolsky's Trello Is A Simple Workflow And List Manager For Groups". TechCrunch. Retrieved February 10, 2012.
  5. ^ "The 7 Coolest Startups You Haven't Heard of Yet". Wired. September 16, 2011. Retrieved September 16, 2011.
  6. ^ "Lifehacker Trello Review". Retrieved May 10, 2013.
  7. ^ Gage, Deborah (July 24, 2014). "Digital Whiteboard Trello Spins Out of Fog Creek With $10.3M". The Wall Street Journal.
  8. ^ Lardinois, Frederic (January 19, 2016). "Trello Launches Developer Platform". TechCrunch. AOL.
  9. ^ Konrad, Alex (May 23, 2016). "Trello Get Serious About Big Businesses As It Passes 1.1 Million Daily Users And Triples Sales". Forbes.
  10. ^ Lardinois, Frederic (January 9, 2017). "Atlassian acquires Trello for $425M". TechCrunch. AOL. Retrieved January 9, 2017.
  11. ^ Noto, Anthony (January 9, 2017). "Productivity app Trello sold for $425 million". New York Business Journal.
  12. ^ "Trello acquires Butler to add power of automation". TechCrunch. Retrieved December 11, 2018.
  13. ^ Root, Daniel (February 9, 2014). "Trello Dojo". Retrieved July 15, 2014.
  14. ^ "Trello".
  15. ^ a b Kiefer, Brett (January 19, 2012). "The Trello Tech Stack". Retrieved January 8, 2013.
  16. ^ "Trello". PC Magazine. Retrieved February 3, 2018.

External links[edit]