Keyri alternatives
TL;DR: 12 companies doing similar work to Keyri in B2B, ranked by how closely they match what Keyri 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 Keyri. They are scored on how closely their own description overlaps with Keyri's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Keyri?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Dyneti Technologies | Reduce payment fraud | Winter 2019 | 3 | Active |
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Hiro | Agents that handle security work | Summer 2023 | 2 | Active |
| Observa | Catch accidental database exposures before the bad guys | Winter 2021 | 1 | Inactive |
| PromptArmor | LLM Security and Compliance | Winter 2024 | — | Active |
| Palisade | AI that finds and fixes OS-level vulnerabilities across device fleets | Summer 2026 | 1 | Active |
| Castle | Block bots & bad behavior | Winter 2016 | 20 | Active |
| Sphere Secure Workspace | — | Summer 2015 | 2 | Acquired |
| idemeum | AI-powered Application Control | Summer 2021 | 10 | Active |
| Templarbit | Protecting applications from malicious activity | Summer 2017 | 11 | Acquired |
| Smyte | Smyte stops bad actors on social networks and marketplaces. | Winter 2015 | 11 | Acquired |
Is Keyri still active?
Keyri has been acquired, which often means pricing, roadmap or support changes. That is the usual reason people start looking at this list.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with Keyri. They are then ranked on how closely their own description overlaps with Keyri's, so the closest matches come first rather than whoever happens to share a tag.