Onebrief

Washington, US · founded 2019 · ~100 employees · onebrief.com

Onebrief is a software platform for military operational planning and staff workflows. It offers live, synchronized data, collaborative editing and AI agent-based workflows. Its users are U.S. military commands and services, including combatant commands, the Army, Navy, Air Force, Marine Corps, Space Force and Special Operations. It raised a $53M Series B in 2024 and a $50M Series C in January 2025, bringing total funding to $103M. A $200M Series D was reported in January 2026, and third-party data puts total funding near $336M. Headcount is estimated at 100–250, with a data aggregator showing about 223 in 2026.

Defense Tech Military Software Enterprise AI Collaboration Software GovTech

Also: software development · military doctrine integration · real-time collaboration · user-friendly interface · version control · decision support · cross-command collaboration · crisis planning · b2b · military planning software · security and encryption · workflow management