Trelium alternatives
TL;DR: 12 companies doing similar work to Trelium in B2B, ranked by how closely they match what Trelium 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 Trelium. They are scored on how closely their own description overlaps with Trelium's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Trelium?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Halluminate | Data and RL environments to automate knowledge work | Summer 2025 | 5 | Active |
| Maritime | The managed cloud for AI agents. | Fall 2026 | 3 | Active |
| Sponge | Financial infrastructure for the agent economy | Winter 2026 | 3 | Active |
| IncidentFox | AI SRE agent that triages, coordinates, and fixes production incidents | Winter 2026 | 2 | Active |
| OpenSpec | Plan mode for complex features | Winter 2026 | — | Active |
| Karumi | The Waymo of Personalized demos | Fall 2025 | 6 | Active |
| Arcten | Lab working on long-horizon autonomous research and coding agents | Fall 2025 | 2 | Active |
| Versori | Agentic integrations & automations for enterprise | Winter 2023 | 16 | Acquired |
| Bytebot | Bytebot is the open source container for AI desktop agents. | Summer 2021 | 3 | Acquired |
| Mailwarm | Prevents your emails from landing in spam. | Summer 2020 | 10 | Active |
| Abundant | Agent simulation and RL for researchers | Fall 2024 | 7 | Active |
| Overshoot | AI Infra for real-time vision applications | Winter 2026 | 5 | Active |
Is Trelium still active?
Trelium 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 Trelium. They are then ranked on how closely their own description overlaps with Trelium's, so the closest matches come first rather than whoever happens to share a tag.