Neptyne alternatives
TL;DR: 12 companies doing similar work to Neptyne in B2B, ranked by how closely they match what Neptyne 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 Neptyne. They are scored on how closely their own description overlaps with Neptyne's, and all facts shown come from the YC company records — nothing is estimated.
What are the best alternatives to Neptyne?
| Alternative | What it does | Batch | Team | Status |
|---|---|---|---|---|
| Fithub | — | Winter 2010 | — | Inactive |
| Insoshi | — | Winter 2008 | — | Inactive |
| Firebase | Build and grow iOS, Android, and Web apps. | Summer 2011 | 500 | Acquired |
| 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 |
| Clerky | Makes legal paperwork easy for startups and their attorneys. | Summer 2011 | 35 | Acquired |
| Earbits | Google AdWords for music. Allowing bands and labels to bid for… | Winter 2011 | 15 | Acquired |
| IncidentFox | AI SRE agent that triages, coordinates, and fixes production incidents | Winter 2026 | 2 | Active |
| Gusto | Provides growing businesses with everything to take care of their team | Winter 2012 | 2400 | Active |
| GiveSpark | Givespark was a celebrity charity fundraising platform | Winter 2012 | 1 | Inactive |
| BookSolid | BookSolid is the opentable for tour operators. | Winter 2012 | — | Inactive |
Is Neptyne still active?
Neptyne is no longer listed as active, so anyone still relying on it should plan a migration to one of the alternatives above.
How was this list put together?
Every company here is Y Combinator-backed and shares at least one category with Neptyne. They are then ranked on how closely their own description overlaps with Neptyne's, so the closest matches come first rather than whoever happens to share a tag.