Fathom alternatives
TL;DR: 12 companies doing similar work to Fathom in B2B, ranked by how closely they match what Fathom 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 Fathom. They are scored on how closely their own description overlaps with Fathom's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Fathom?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Snapboard | — | Winter 2020 | 2 | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Thinkature | — | Summer 2006 | — | Inactive |
| Acunote | — | Winter 2011 | — | Active |
| ZumoDrive | Media in the cloud | Summer 2007 | 15 | Acquired |
| Emailio | Email built for wellness | Winter 2014 | 5 | Active |
| Fithub | — | Winter 2010 | — | Inactive |
| Post.fm | New email inbox. | Summer 2010 | — | Inactive |
| Assorted Bits | A mobile calendar for all the fun stuff you do with friends. | Summer 2012 | — | Inactive |
| Team Apart | — | Summer 2008 | 2 | Inactive |
| River | The AI desktop. | Fall 2026 | 2 | Active |
| Retool | Build internal tools fast. | Winter 2017 | 300 | Active |
Is Fathom still active?
Fathom 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 Fathom. They are then ranked on how closely their own description overlaps with Fathom's, so the closest matches come first rather than whoever happens to share a tag.