Revel raises $150M Series B to modernize hardware control software still stuck in the pre-Windows 98 era
Feb 26, 2026 with Scott Morton
Key Points
- Revel closes $150M Series B led by Index Ventures to replace hardware control software that hasn't meaningfully evolved since pre-Windows 98 era.
- Founder Scott Morton, who spent nine years writing control software for SpaceX's Falcon 9 and Starship, built a custom programming language that guarantees code cannot crash at runtime.
- The platform compresses development cycles by 10x, enabling teams to test hardware 50 times weekly instead of five, with early customers including Impulse Space and Radiant Nuclear.
Summary
Revel has closed a $150M Series B led by Index Ventures, with participation from Made Innovation and Redpoint Ventures, to modernize the software used to control and test physical hardware systems.
Founder and CEO Scott Morton spent nine and a half years at SpaceX writing control software for Falcon 9 and Starship. The software that engineers use to control and test hardware—rockets, pumps, satellites, nuclear reactors—has not meaningfully improved since before Windows 98. Revel replaces that legacy tooling with a modern platform that handles both control software and the surrounding test environment.
Teams that can test a pump five times a week with current tooling can test it 50 times with Revel, compressing development cycles and improving the end product.
Custom programming language
Revel has built its own programming language designed specifically for hardware control. Code that compiles in the language cannot crash at runtime. Morton positions this alongside financial-industry precedents like Goldman Sachs's securities language and Jane Street's use of OCaml, domains where software errors carry severe real-world consequences. Nobody is vibe-coding control software today, and Revel eventually plans to enable AI-assisted coding within guardrails.
Customer base
Revenue so far has come primarily from scaling startups. Named customers include Impulse Space, whose rocket engine test site in the Mojave Desert runs on Revel's software, and Radiant Nuclear, for which Revel provides the command-and-control system. The Series B is intended to support expansion into larger aerospace primes and adjacent industrial verticals such as mining, heavy industry, and oil and gas.