Linear

Linear builds product development software for teams to manage customer feedback, track issues, plan projects and review code in one shared workspace. Linear Agent uses issues, discussions and codebase context to investigate tasks and carry out implementation. Through Coding Sessions, teams can delegate an issue, follow the agent’s work and review the resulting pull request with Diffs. Loops extends this approach to recurring workflows triggered by schedules or events.

Founded in 2019, Linear is led by co-founders Karri Saarinen, CEO; Jori Lallo, CPO; and Tuomas Artman, CTO. Its local-first architecture keeps a database on each client, allowing issue updates and navigation without a network round trip. Delta sync retrieves only changes since a client’s last checkpoint. Its engineering team rebuilt this read path with turbopuffer to filter changes by permissions and subscriptions, while retaining PostgreSQL as the authoritative data store.

In 2026, the company reported more than 40,000 paying companies, annual recurring revenue exceeding $100 million, and positive cash flow. In August, Linear completed a $99 million employee tender offer at a $2.5 billion valuation, providing liquidity to current and former employees rather than raising new primary capital.