Rainforest alternatives
TL;DR: 12 companies doing similar work to Rainforest in B2B, ranked by how closely they match what Rainforest 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 Rainforest. They are scored on how closely their own description overlaps with Rainforest's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Rainforest?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Eivod | — | Summer 2007 | 51 | Inactive |
| Stackq | — | Summer 2009 | — | Inactive |
| BitSample | — | Winter 2008 | — | Inactive |
| Brushes | iPad drawing software. | Summer 2010 | — | Inactive |
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| OpenRelay | Distributed, hardware-agnostic AI inference | Summer 2026 | 2 | Active |
| DevCycle | Feature Flag Management Built for Developers | Winter 2014 | 55 | Acquired |
| Atrisa | AI Agents for Analog Circuit Design | Spring 2026 | 3 | Active |
| Canary | Adversarial AI that breaks your AI | Winter 2026 | 2 | Active |
| NudgePad | Online IDE. We joined Microsoft in 2014. | Summer 2009 | 2 | Inactive |
| Simulithic | AI users that test your app on every device and browser | Fall 2026 | 2 | Active |
Is Rainforest still active?
Rainforest 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 Rainforest. They are then ranked on how closely their own description overlaps with Rainforest's, so the closest matches come first rather than whoever happens to share a tag.