Signals alternatives
TL;DR: 12 companies doing similar work to Signals in B2B, ranked by how closely they match what Signals 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 Signals. They are scored on how closely their own description overlaps with Signals's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Signals?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Optilly/Installmonetizer | Fb ad optimization platform | Winter 2012 | 11 | Inactive |
| Brushes | iPad drawing software. | Summer 2010 | — | Inactive |
| Tepali | AI EMR for medspas & wellness clinics | Winter 2026 | 2 | Active |
| OpenSpec | Plan mode for complex features | Winter 2026 | — | Active |
| Zatanna | Turning all software into agent-first APIs | Winter 2026 | 2 | Active |
| GiveSpark | Givespark was a celebrity charity fundraising platform | Winter 2012 | 1 | Inactive |
| Sift | The Leader in Digital Trust & Safety | Summer 2011 | — | Active |
| Perfect Audience | Self-service display advertising for SaaS and online retail. | Summer 2011 | 11 | Acquired |
| Pollen | AI agents that automate customer success | Winter 2026 | 3 | Active |
| BookSolid | BookSolid is the opentable for tour operators. | Winter 2012 | — | Inactive |
Is Signals still active?
Signals 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 Signals. They are then ranked on how closely their own description overlaps with Signals's, so the closest matches come first rather than whoever happens to share a tag.