Cardinal alternatives
TL;DR: 12 companies doing similar work to Cardinal in B2B, ranked by how closely they match what Cardinal 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 Cardinal. They are scored on how closely their own description overlaps with Cardinal's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Cardinal?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Optilly/Installmonetizer | Fb ad optimization platform | Winter 2012 | 11 | Inactive |
| Brushes | iPad drawing software. | Summer 2010 | — | Inactive |
| SolidStage | Sysadmin as a service. We make deploying, configuring, monitoring,… | Winter 2012 | — | Inactive |
| Tumult | Tumult is building the next generation of apps for web design. Our… | Winter 2011 | 1 | Active |
| Arcten | Lab working on long-horizon autonomous research and coding agents | Fall 2025 | 2 | Active |
| Button Computer | The tiny computer built for voice AI. | Winter 2026 | 1 | Active |
| IncidentFox | AI SRE agent that triages, coordinates, and fixes production incidents | Winter 2026 | 2 | Active |
| Zatanna | Turning all software into agent-first APIs | Winter 2026 | 2 | Active |
| Pollen | AI agents that automate customer success | Winter 2026 | 3 | Active |
| GiveSpark | Givespark was a celebrity charity fundraising platform | Winter 2012 | 1 | Inactive |
Is Cardinal still active?
Cardinal 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 Cardinal. They are then ranked on how closely their own description overlaps with Cardinal's, so the closest matches come first rather than whoever happens to share a tag.