Atlassian has agreed to acquire The Browser Company, the startup behind the Arc and Dia web browsers, for $610 million in cash. The deal is expected to close in Atlassian's fiscal second quarter, which ends in December. Atlassian plans to enhance The Browser Company's technology, leveraging its experience selling to big companies. The acquisition aims to improve the browsing experience for users of Atlassian products, such as Jira project management software.