OS3 alternatives

TL;DR: The closest YC-backed alternatives to <strong>OS3</strong> are other Y Combinator Industrials companies, especially from the Summer 2026 batch. Below are 20 ranked competitors with batch, status, and team size.

Y Combinator-backed Industrials companies similar to OS3 (YC Summer 2026).

Last verified:

  • Isengard Industries Inc YC Summer 2026 · Active · 20 people — Mass-produced AI strike systems and Counter-UAS
  • Hop Aero YC Summer 2026 · Active · 6 people — Rocket cargo delivery to contested environments
  • Molagri YC Summer 2026 · Active · 4 people — Biopesticides that are safe for humans and bees.
  • Greypoint Industries YC Summer 2026 · Active · 4 people — Manufacturing the future of autonomous swarm warfare.
  • Baud YC Summer 2026 · Active · 3 people — AI training chips and developer platform
  • Control Seat YC Summer 2026 · Active · 2 people — Control and Monitoring of Industrial Operations
  • GUILD YC Summer 2026 · Active · 2 people — Neoprime Reshaping Defense Supply Chain
  • 6thSense YC Summer 2026 · Active — A nervous system for physical AI
  • Operon YC Summer 2026 · Active — Agentic data layer for manufacturing & process industries.
  • Cruise YC Winter 2014 · Acquired · 3000 people — Self-driving cars.
  • Astranis YC Winter 2016 · Active · 500 people — Advanced satellites for high orbits.
  • Embark Trucks YC Winter 2016 · Public · 300 people — Self-driving semi trucks.
  • Relativity Space YC Winter 2016 · Active · 2500 people — Building humanity’s multiplanetary future.
  • Tractian YC Winter 2021 · Active · 530 people — Physical AI for asset-heavy industries
  • Oolu YC Summer 2015 · Acquired · 230 people — Oolu is one of the fastest growing off-grid solar firms in West Africa
  • Moxion Power Co. YC Winter 2021 · Inactive · 380 people — Mobile Energy Storage Technology
  • Momentus YC Summer 2018 · Public · 125 people — The space infrastructure services company
  • Stoke Space YC Winter 2021 · Active · 305 people — Seamless mobility to, through, and from space. It starts with 100%…
  • May Mobility YC Summer 2017 · Active · 260 people — Transforming cities and rural areas through AV transit and technology
  • Rigetti Computing YC Summer 2014 · Public · 51 people — Quantum coherent supercomputing.

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