Revel, a unified software platform built for hardware test and control, has raised $150 million in Series B funding to push deeper into aerospace, defense, robotics, and industrial markets, a signal that the long-ignored software layer behind physical systems is finally getting serious capital and attention. The round was led by Index Ventures, with major participation from Redpoint Ventures and returning investors Thrive Capital, Felicis, and Abstract Ventures, alongside notable angels including Dylan Field. It’s a large check by any standard, but especially telling in a sector where software often hides behind the hardware headlines.
Modern hardware systems, whether rockets, propulsion stacks, autonomous robots, or nuclear infrastructure, are no longer just physical machines with a bit of firmware glued on. They are software-defined systems first, with autonomy, real-time decision-making, and safety constraints baked into every operational layer. Yet much of the software used to test, validate, and control these systems still traces its DNA back decades, to an era before collaborative development, deterministic execution, and real-time observability were assumed requirements rather than luxuries. That mismatch between system complexity and tooling has become a quiet but growing risk across critical industries.
Scott Morton, founder and CEO of Revel, frames the problem in blunt operational terms rather than abstract product vision. After years building and operating systems where failure was not an option, he saw testing and control as the true center of gravity in complex hardware development, and also the most under-invested. Revel was built to be infrastructure engineers can trust from early prototype stages all the way into production, without the usual patchwork of legacy tools, scripts, and brittle interfaces that tend to accumulate along the way.
At the core of the platform is a visual, software-first approach to hardware systems: teams can configure components, observe live telemetry, and issue commands in real time with guardrails designed for high-consequence environments. Revel’s own programming language, RevelCode, takes a Python-inspired syntax and combines it with deterministic execution, precision, and debuggability, explicitly targeting scenarios where ambiguity or timing drift can translate into real-world damage. The pitch isn’t just speed or developer happiness, but fewer costly errors and tighter control over systems that have very little tolerance for improvisation.
From the investor side, the thesis is that hardware is entering a new phase of autonomy and operational complexity, while its software foundation remains stuck in the past. Nina Achadjian of Index Ventures, who led the round and joined Revel’s board, points to Morton’s operational background as a differentiator, not just as a founder who understands code, but as one who understands the consequences of failure at scale. The ambition is category-defining: modernize the foundational layer of how complex hardware is built, tested, and run, rather than adding yet another tool on top of a fragile stack.
Revel is already seeing traction with customers like Impulse Space, Radiant Nuclear, and Astro Mechanica, spanning aerospace, defense, and advanced energy. That early adoption matters, because these are environments where new software is adopted cautiously, and only when it proves it can meet reliability and safety expectations. With demand rising for software-defined hardware across industries, the company is now pushing beyond its initial niches into broader industrial control use cases, where similar problems of legacy tooling and rising system complexity are playing out more quietly.
The new funding will go toward expanding the team, continuing product development, and accelerating deployment across markets that increasingly depend on tight integration between software and physical systems. If Revel succeeds, it won’t be flashy in the consumer sense, but it could become one of those infrastructural companies that engineers quietly rely on, the kind that reshapes how critical systems are built without ever needing to shout about it.
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