TL;DR: If you are replacing Heart Aerospace, the closest options are Stralis Aircraft, Beyond Aero, Talyn Air. 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 Heart Aerospace (YC Winter 2019).
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The three closest alternatives to Heart Aerospace are:
| Alternative | What it does | Stage | Team | Status |
|---|---|---|---|---|
| Stralis Aircraft | Emission free hydrogen electric aircraft | YC Winter 2023 | 4 | Active |
| Beyond Aero | First electric business aircraft designed for hydrogen propulsion | YC Winter 2022 | 80 | Active |
| Talyn Air | Long range, battery electric vertical take-off and landing aircraft. | YC Winter 2020 | 18 | Acquired |
| Pyka | Autonomous electric airplanes | YC Summer 2017 | 75 | Active |
| H3X Technologies | The lightest electric aircraft motors in the world. | YC Winter 2021 | 58 | Active |
| REGENT | All-electric seagliders for fast, affordable regional transportation | YC Winter 2021 | 40 | Active |
| Seaflight Technologies | We make the world's most efficient aircraft | YC Summer 2022 | 4 | Active |
| Odys Aviation | Vertical takeoff and landing aircraft for major airlines | YC Summer 2021 | 11 | Active |
| Wright Electric | Boeing for electric planes | YC Winter 2017 | 4 | Active |
| Boost Biomes | — | YC Summer 2019 | 12 | Inactive |
| ThereCraft | — | YC Summer 2017 | 1 | Active |
| Momentus | The space infrastructure services company | YC Summer 2018 | 125 | Public |
It depends on your size. Stralis Aircraft is the closest match on what Heart Aerospace 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.
Heart Aerospace is still operating, so switching is a choice rather than a forced migration. Compare on fit and price rather than urgency.
Every company here is Y Combinator-backed and was matched to Heart Aerospace 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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