TL;DR: If you are replacing Passerine Aircraft, the closest options are ThereCraft, Boost Biomes, General Aviation. 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 Passerine Aircraft (YC Summer 2017).
Last verified:
The three closest alternatives to Passerine Aircraft are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| ThereCraft | — | YC Summer 2017 | 1 | Active |
| Boost Biomes | — | YC Summer 2019 | 12 | Inactive |
| General Aviation | Fix ATC by connecting aircraft to the internet | YC Spring 2026 | — | Active |
| Maquoketa Research | The intelligence layer for drones | YC Spring 2026 | 5 | Active |
| Arc | aerial videography | YC Summer 2012 | 2 | Inactive |
| Astro Mechanica | Supersonics for the new Jet Age | YC Winter 2024 | 52 | Active |
| Exosonic, Inc. | Developing supersonic UAVs as a pathway to quiet supersonic flight | YC Winter 2020 | 14 | Inactive |
| Farcast | We build advanced satcom user terminals | YC Winter 2020 | 12 | Active |
| Stralis Aircraft | Emission free hydrogen electric aircraft | YC Winter 2023 | 4 | Active |
| General Astronautics | Robotics for Space R&D | YC Winter 2026 | 2 | Active |
| Heart Aerospace | Heart makes electric airplanes with an all-electric range of 250 miles | YC Winter 2019 | 50 | Active |
| Pyka | Autonomous electric airplanes | YC Summer 2017 | 75 | Active |
It depends on your size. ThereCraft is the closest match on what Passerine Aircraft 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.
Passerine Aircraft is no longer listed as active, so anyone still relying on it should plan a migration to one of the alternatives above.
Every company here is Y Combinator-backed and was matched to Passerine Aircraft 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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