Surtr Defense Systems alternatives
TL;DR: 12 companies doing similar work to Surtr Defense Systems in Industrials, ranked by how closely they match what Surtr Defense Systems actually does — not just by category.
How this list was built: every company here is Y Combinator-backed and shares at least one category with Surtr Defense Systems. They are scored on how closely their own description overlaps with Surtr Defense Systems's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Surtr Defense Systems?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| StableBrowse | Building the Data Infrastructure layer for Physical AI. | Spring 2026 | 3 | Active |
| Antropi Robotics | Autonomous CNC factories for faster hardware | Fall 2026 | — | Active |
| Apollo Atomics, Inc. | We make the most compact nuclear reactors | Spring 2026 | — | Active |
| Avea Robotics | The human-in-the-loop system for robots | Spring 2026 | 2 | Active |
| 6thSense | Nervous System for Physical AI | Summer 2026 | 4 | Active |
| Aktoria Robotics | Human as API for robots | Summer 2026 | 2 | Active |
| IMPACT Drones | Air Defense as a Service for Civilian Infrastructure. | Summer 2026 | 2 | Active |
| General Instinct | Inference Infrastructure for Physical AI | Spring 2026 | 2 | Active |
| Deepnight | Building The Next Generation of Night Vision Devices | Winter 2024 | 16 | Active |
| Null Labs | End-to-end Simulation for Defense Autonomy | Fall 2025 | 2 | Active |
| Airware | Airware provides end-to-end solutions that enable enterprises to… | Winter 2013 | 51 | Inactive |
| Isengard Industries Inc | Mass-produced AI strike systems and Counter-UAS | Summer 2026 | 30 | Active |
Is Surtr Defense Systems still active?
Surtr Defense Systems is still operating, so switching is a choice rather than a forced migration. Compare on fit and price rather than urgency.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with Surtr Defense Systems. They are then ranked on how closely their own description overlaps with Surtr Defense Systems's, so the closest matches come first rather than whoever happens to share a tag.