We exist to make the essential secure.
The world runs on systems most people never see — power grids, water networks, hospitals, transportation hubs, research labs, and financial infrastructure. These systems keep life moving, yet many of them operate on aging technology never designed for the threats and demands of today. Modernization is no longer optional; it's essential. But it shouldn't be complicated, costly, or risky.
Who We Are
Founded by Army and Navy veterans, we bring the clarity, discipline, and purpose of service to the world of critical infrastructure security. We develop high-security virtualization technology that protects from the hardware layer up, eliminating entire classes of vulnerability while helping organizations run faster, leaner, and with greater confidence. Our mission is not just to secure systems — it's to safeguard the people, communities, and industries who rely on them every day.
Mainsail is more than a software company. We are stewards of the infrastructure that sustains society. We believe the future can be safer, more resilient, and more sustainable — and that technology, when built with integrity, curiosity, simplicity, and humanity, can help make that future real.
Our values guide how we build, operate, and serve those we support.
Our Values
Integrity is our foundation.
Curiosity fuels our innovation.
Simplicity is our design language and our conviction.
Humanity is why we build in the first place.