Perseus Defense alternatives: 12 options compared

TL;DR: If you are replacing Perseus Defense, the closest options are ThereCraft, Maquoketa Research, Boost Biomes. The table below compares 12 alternatives on what they do, stage, size and status.

Every alternative below is compared on what it actually does, not just its category — so you can see which one genuinely replaces Perseus Defense (YC Summer 2025).

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What are the best alternatives to Perseus Defense?

The three closest alternatives to Perseus Defense are:

  1. ThereCraft — works in the same Industrials category (YC Summer 2017).
  2. Maquoketa Research — The intelligence layer for drones (YC Spring 2026).
  3. Boost Biomes — works in the same Industrials category (YC Summer 2019).

Perseus Defense alternatives compared

AlternativeWhat it doesStageTeamStatus
ThereCraft—YC Summer 20171Active
Maquoketa ResearchThe intelligence layer for dronesYC Spring 20265Active
Boost Biomes—YC Summer 201912Inactive
Arcaerial videographyYC Summer 20122Inactive
Albacore Inc.Drone submarinesYC Summer 202518Active
lvl5HD maps for self-driving cars.YC Winter 20176Acquired
Ares IndustriesBuilding low-cost cruise missilesYC Summer 20242Active
Guardian RFDrone detection for US defense and national securityYC Summer 202415Active
AICESubmarine drones for defenseYC Spring 20262Active
Prime LightworksPrime Lightworks Inc. manufactures electric propulsion systems for…YC Summer 20161Active
WardstoneThe Modular Interceptor PlatformYC Fall 20258Active
Efference—YC Fall 202512Active

Which Perseus Defense alternative should I choose?

It depends on your size. ThereCraft is the closest match on what Perseus Defense actually does. If you need something more established, sort the table by team size — larger teams generally mean more support and a longer track record. If budget is the constraint, the earlier-batch companies are usually the ones still competing on price.

Is Perseus Defense still active?

Perseus Defense 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 was matched to Perseus Defense on what it actually does — its own description of its product — rather than on a broad category label. Batch, team size and operating status come from the YC directory and are shown as-is. We do not rank by payment.

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