Sameday alternatives
TL;DR: 12 companies doing similar work to Sameday in B2B, ranked by how closely they match what Sameday 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 Sameday. They are scored on how closely their own description overlaps with Sameday's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Sameday?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Infer | Operating system for insurance agencies | Summer 2021 | 9 | Active |
| Champ | AI SDR | Summer 2022 | 1 | Active |
| Clustrix | — | Winter 2006 | 51 | Acquired |
| Convex | Software for the commercial services industry. | Winter 2019 | 110 | Acquired |
| People.ai | Harnesses business activity to unlock growth. | Summer 2016 | 300 | Active |
| HockeyStack | The operating system for inbound B2B revenue | Summer 2023 | 32 | Active |
| Hyperbound | Revenue Activation Platform | Summer 2023 | 30 | Active |
| Fuse AI | Agentic Sales Platform | Winter 2025 | 12 | Active |
| Relate | All-in-One Sales and Marketing CRM for B2B teams | Summer 2022 | 7 | Active |
| FirstQuadrant | Sales AI that helps revenue teams move faster and close more deals. | Summer 2021 | 2 | Inactive |
Is Sameday still active?
Sameday 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 Sameday. They are then ranked on how closely their own description overlaps with Sameday's, so the closest matches come first rather than whoever happens to share a tag.