Trello, a cloud collaboration spinout of Fog Creek Software, has been acquired by Atlassian for $360m in cash and $65m in shares and options.

Collaboration software provider Atlassian agreed yesterday to acquire Trello, a US-based collaborative tool developer incubated by project management software producer Fog Creek Software, for $425m in cash and stock.

Launched in 2011, Trello has built an intuitive, visual, cloud-based tool that enables users to manage and collaborate on projects online. It has more than 19 million registered users and will be added to Atlassian’s project tracking, content and communication offerings.

Trello’s only venture funding since its formation came when it was…