From Wikipedia, the free encyclopedia

Original author(s)
Initial releaseSeptember 13, 2011; 12 years ago (2011-09-13)
Stable release
Android2023.13.1.7275 / September 22, 2023; 8 months ago (2023-09-22)[2]
iOS2023.13.3 / September 21, 2023; 8 months ago (2023-09-21)[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,
LicenseProprietary software

Trello is a web-based, kanban-style, list-making application developed by Atlassian. Created in 2011 by Fog Creek Software,[5] 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]

In May 2015, Trello expanded internationally with localized interfaces for Brazil, Germany, and Spain. [18]

In 2016 Trello launched the Power-Up platform,[19] allowing 3rd party developers to build and distribute extensions known as Power-Ups[20] to Trello. Initial integrations included Zendesk, SurveyMonkey and Giphy. By January 2022 there were a total of 247 power-ups listed in the Power-Up directory.[21]

On 9 January 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 announced its acquisition of Butler, a company that developed a leading power-up for automating tasks within a Trello board.[22]

Trello announced 35 million users in March 2019[23] and 50 million users in October 2019.[24]

In 2020 Craig Jones, then cybersecurity operations director at Sophos, found that the company exposed the personally identifiable information (PII) data of its users, exposed through public Trello boards; the researcher first tweeted about this issue in the year 2018.[25][26][27]

On 16 January 2024 Trello suffered a data breach containing over 15 million unique email addresses, names and usernames, when the data was posted on a popular hacking forum. The data was obtained by enumerating a publicly accessible resource using email addresses from previous breach corpuses; it was then added on 22 January 2024 to the famous website collecting data breaches "Have I Been Pwned?".[28][29]


Users can create task boards with different columns and move the tasks between them.[30] 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.[31]


According to a Fog Creek 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,[32] HTML5 .pushState(), and the Mustache templating language.[33] The server was built on top of MongoDB, Node.js and a modified version of[33]


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."[34]

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 July 10, 2023.
  3. ^ "Trello – Organize anything!". App Store. Retrieved October 7, 2023.
  4. ^ "Trello vs Jira: Settling a Sibling Rivalry in 2019". Retrieved October 5, 2019.
  5. ^ Spolksy, Joel (September 13, 2011). "Announcing Trello". Joel on Software. Retrieved January 8, 2023.
  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". September 13, 2011. 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. ^
  19. ^ Max Kramer (January 18, 2016). "Introducing Trello's Power-Ups Platform For Developers". Trello.
  20. ^ "What are Power-Ups? - Trello Help". Retrieved November 15, 2021.
  21. ^ "Top Trello Power-Ups from 2021". BlueCatReports. January 18, 2022.
  22. ^ "Trello acquires Butler to add power of automation". TechCrunch. December 10, 2018. Retrieved December 11, 2018.
  23. ^ "Using Trello to Plan Your Next Vacation (Really)". Bloomberg. Bloomberg L.P. March 14, 2019. Retrieved October 5, 2019.
  24. ^ "50 Million Is Just The Beginning: Automation, Templates, And More New Features To Keep Your Team Building". Retrieved October 30, 2019.
  25. ^ "Trello App Exposes Personally Identifiable Information of its Users". CISO MAG. February 4, 2020. Retrieved January 22, 2024.
  26. ^ Taylor, Craig (March 10, 2020). "Trello Exposes Personally Identifiable Information". CyberHoot. Retrieved January 22, 2024.
  27. ^ Iyer, Kavita (February 2, 2020). "Trello exposed! Search exposes massive trove of private data". TechWorm. Retrieved January 30, 2024.
  28. ^ "Have I Been Pwned: Pwned websites". Have I Been Pwned. Retrieved January 22, 2024.
  29. ^ Jain, Samiksha (January 18, 2024). "Alleged Trello Data Breach Raises Concerns: 15 Million User Records on Sale". The Cyber Express. Retrieved January 22, 2024.
  30. ^ "Trello Review". PCMAG. Retrieved August 18, 2020.
  31. ^ Root, Daniel (February 9, 2014). Trello Dojo. Leanpub. Retrieved July 15, 2014.
  32. ^ "Backbone.js".
  33. ^ a b Kiefer, Brett (January 19, 2012). "The Trello Tech Stack". Archived from the original on January 21, 2012. Retrieved January 8, 2013.
  34. ^ "Trello". PC Magazine. Retrieved February 3, 2018.

External links[edit]