Osseus alternatives
TL;DR: 12 companies doing similar work to Osseus in B2B, ranked by how closely they match what Osseus 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 Osseus. They are scored on how closely their own description overlaps with Osseus's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Osseus?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Abundant | Agent simulation and RL for researchers | Fall 2024 | 7 | Active |
| Halluminate | Data and RL environments to automate knowledge work | Summer 2025 | 5 | Active |
| Talking Computers | Real-time interaction models for voice agents | Winter 2026 | 2 | Active |
| Marft | Marft creates embeddable machine learning models for application… | Winter 2012 | 3 | Inactive |
| Riften | Earned intelligence for every company | Summer 2026 | 5 | Active |
| Cascade | Distilling Proprietary Intelligence | Winter 2026 | 2 | Active |
| Optilly/Installmonetizer | Fb ad optimization platform | Winter 2012 | 11 | Inactive |
| Arcten | Lab working on long-horizon autonomous research and coding agents | Fall 2025 | 2 | Active |
| Brushes | iPad drawing software. | Summer 2010 | — | Inactive |
| Quotient Labs | Use Claude Code at 47% less cost in one line of installation. | Winter 2026 | 2 | Active |
Is Osseus still active?
Osseus 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 Osseus. They are then ranked on how closely their own description overlaps with Osseus's, so the closest matches come first rather than whoever happens to share a tag.