Atlassian Acquires Developer of the Arc and Dia Web Browsers

Atlassian, the owner of popular productivity tools including Jira and Trello, announced today that it was acquiring The Browser Company, the maker of the Arc and Dia browsers, for $610 million in cash. The company hopes to create “the AI browser for knowledge workers” by capitalizing on Dia’s unique features.

The Browser Company launched its Chromium-based Arc browser back in 2023, but stopped its development in May 2025 to focus on Dia, a new AI web browser. Dia is currently available in early access on macOS, and it offers a chatbot interface on its New tab page. When typing a prompt, users can reference browser tabs to understand what’s on them, compare products, and more. Dia also offers a set of skills for interacting with websites and online services, automating certain tasks, and more.

Atlassian explained today that it’s aligned with what the makers of Arc and Dia anticipated: Artificial intelligence is going to change how we browse the web, and current web browsers are still stuck in the past. According to the company, web browsers today have “no awareness of your work context, no understanding of your priorities, and no help connecting the dots between your tools.”

To transform Dia into the knowledge worker’s browser, Atlassian plans to optimize it for productivity apps, helping users to be productive by understanding the context of their opened tabs. Dia will also be able to remember users’ “personal work memory,” and it will offer security, compliance, and admin controls to enterprise users.

As of today, the main competitor to Dia is probably Perplexity’s new Comet browser. Microsoft also recently introduced a new Copilot Mode in Edge, while Opera is working on a new agentic browser named Neon. If Atlassian expects to close its acquisition of The Browser Company before the end of the year, the deal is likely going to accelerate the competition in the AI browser space.