Cosine alternatives
TL;DR: 12 companies doing similar work to Cosine in B2B, ranked by how closely they match what Cosine 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 Cosine. They are scored on how closely their own description overlaps with Cosine's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Cosine?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Versori | Agentic integrations & automations for enterprise | Winter 2023 | 16 | Acquired |
| Segment | Software and APIs to collect, clean, and control customer data. | Summer 2011 | 550 | Acquired |
| Syncly | Social listening for the video era | Winter 2023 | 15 | Active |
| Reflex | The operating system for building mission-critical enterprise apps. | Winter 2023 | 10 | Active |
| Optilly/Installmonetizer | Fb ad optimization platform | Winter 2012 | 11 | Inactive |
| Brushes | iPad drawing software. | Summer 2010 | — | Inactive |
| Citus Data | Real-time. Big data. PostgreSQL | Summer 2011 | 45 | Acquired |
| Upverter | The future of hardware design. A marketplace for hardware engineering… | Winter 2011 | 11 | Acquired |
| Amiato | The BI bridge for unstructured data. We automatically bridge the gap… | Winter 2012 | 2 | Acquired |
| GazeHawk | Eyetracking using webcams. | Summer 2010 | 2 | Acquired |
Is Cosine still active?
Cosine 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 Cosine. They are then ranked on how closely their own description overlaps with Cosine's, so the closest matches come first rather than whoever happens to share a tag.