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Trello logo.svg
Original author(s)
Initial releaseSeptember 13, 2011; 11 years ago (2011-09-13)
Stable release
Android2020.10.1.14395-production / July 31, 2020; 2 years ago (2020-07-31)[2]
iOS2020.11 / August 25, 2020; 2 years ago (2020-08-25)[3]
Operating systemWeb application, macOS, Windows OS,[4] iOS 12+, Android 5.1+
  • 15.68 MB (Android)
  • 139.7 MB (iOS)
  • 79.15 MB (Windows)
Available in21 languages
List of languages
Czech, Dutch, English, Finnish, French, German, Hungarian, Italian, Japanese, Norwegian, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, and Vietnamese
TypeProductivity software, team collaboration, project management, task management,

Trello is a web-based, Kanban-style, list-making application and is developed by Trello Enterprise, a subsidiary of Atlassian.[5] Created in 2011 by Glitch, it was spun out to form the basis of a separate company in New York City in 2014[6][7][8] and sold to Atlassian in January 2017.[9]


The name Trello is derived from the word "trellis" which had been a code name for the project at its early stages.[10] Trello was released at a TechCrunch event by Fog Creek founder Joel Spolsky.[11] In September 2011 Wired magazine named the application one of "The 7 Coolest Startups You Haven't Heard of Yet".[12] Lifehacker said "it makes project collaboration simple and kind of enjoyable".[13]

In 2014, it raised US$10.3 million in funding from Index Ventures and Spark Capital.[14] Prior to its acquisition, Trello had sold 22% of its shares to investors, with the remaining shares held by founders Michael Pryor and Joel Spolsky.[15][16] In May 2016, Trello claimed it had more than 1.1 million daily active users and 14 million total signups.[17]

On January 9, 2017, Atlassian announced its intent to acquire Trello for $425 million. The transaction was made with $360 million in cash and $65 million in shares and options.

In December 2018, Trello Enterprise announced its acquisition of Butler, a company that developed a "Power-Up"[18] for automating tasks within a Trello board.[19]

Trello announced 35 million users in March 2019[20] and 50 million users in October 2019.[21]


Users can create their task boards with different columns and move the tasks between them.[22] Typically columns include task statuses such as To Do, In Progress, Done. The tool can be used for personal and business purposes including real estate management, software project management, school bulletin boards, lesson planning, accounting, web design, gaming, and law office case management.[23]


According to a Glitch blog post in January 2012, the client was a thin web layer which downloads the main app, written in CoffeeScript and compiled to minified JavaScript, using Backbone.js,[24] HTML5 .pushState(), and the Mustache templating language.[25] The server was built on top of MongoDB, Node.js and a modified version of[25]


On January 26, 2017, PC Magazine gave Trello a 3.5 / 5 rating, 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."[26]

See also[edit]


  1. ^ "Dropbox Wants to Soar Beyond Cloud Storage and Help Put People on Mars. But First: It's Releasing a Desktop App". Retrieved October 5, 2019.
  2. ^ "Trello – Organize anything with anyone, anywhere! APKs". APKMirror. Retrieved August 26, 2020.
  3. ^ "Trello – Organize anything!". App Store. Retrieved August 26, 2020.
  4. ^ "Trello vs Jira: Settling a Sibling Rivalry in 2019". Retrieved October 5, 2019.
  5. ^ "Trello limits teams on free tier to 10 boards, rolls out Enterprise automations and admin controls". VentureBeat. March 19, 2019. Retrieved October 5, 2019.
  6. ^ "A Special Announcement: Trello is now part of Trello, Inc". Retrieved July 24, 2014.
  7. ^ Drake, Nate. "Trello review". TechRadar. Retrieved October 5, 2019.
  8. ^ "10 Hot Startups in NYC". Forbes. Retrieved November 2, 2016.
  9. ^ Pryor, Michael. "Trello Is Being Acquired By Atlassian". Retrieved February 2, 2017.
  10. ^ "Why is Trello Called Trello?". Retrieved July 10, 2020.
  11. ^ Rao, Leena (September 13, 2011). "Joel Spolsky's Trello Is A Simple Workflow And List Manager For Groups". TechCrunch. Retrieved February 10, 2012.
  12. ^ "The 7 Coolest Startups You Haven't Heard of Yet". Wired. September 16, 2011. Retrieved September 16, 2011.
  13. ^ "Lifehacker Trello Review". Retrieved May 10, 2013.
  14. ^ Gage, Deborah (July 24, 2014). "Digital Whiteboard Trello Spins Out of Fog Creek With $10.3M". The Wall Street Journal.
  15. ^ Lardinois, Frederic (January 9, 2017). "Atlassian acquires Trello for $425M". TechCrunch. AOL. Retrieved January 9, 2017.
  16. ^ Noto, Anthony (January 9, 2017). "Productivity app Trello sold for $425 million". New York Business Journal.
  17. ^ Konrad, Alex (May 23, 2016). "Trello Get Serious About Big Businesses As It Passes 1.1 Million Daily Users And Triples Sales". Forbes.
  18. ^ "What are Power-Ups? - Trello Help". Retrieved November 15, 2021.
  19. ^ "Trello acquires Butler to add power of automation". TechCrunch. Retrieved December 11, 2018.
  20. ^ "Using Trello to Plan Your Next Vacation (Really)". Bloomberg L.P. Retrieved October 5, 2019.
  21. ^ "50 Million Is Just The Beginning: Automation, Templates, And More New Features To Keep Your Team Building". Retrieved October 30, 2019.
  22. ^ "Trello Review". PCMAG. Retrieved August 18, 2020.
  23. ^ Root, Daniel (February 9, 2014). "Trello Dojo". Retrieved July 15, 2014.
  24. ^ "Trello".
  25. ^ a b Kiefer, Brett (January 19, 2012). "The Trello Tech Stack". Archived from the original on January 21, 2012. Retrieved January 8, 2013.
  26. ^ "Trello". PC Magazine. Retrieved February 3, 2018.

External links[edit]