OpenInstinct vs Vellum
Both are listed under Developer Tools. Here is how they differ on the facts we track.
OpenInstinct
github.com
Vellum
vellum.ai
| Feature | OpenInstinct | Vellum |
|---|---|---|
| What it is | iMessage personal assistant + password vault. | An assistant that knows you deeply, evolves alongside you, and belongs to no one else. |
| Pricing | open source | open source |
| Categories | Developer Tools, Productivity | Productivity, Developer Tools |
| Platforms | Web, CLI | macOS, iOS, CLI |
| Upvotes | 0 | 1 |
| Last verified | 2026-09-10 | 2026-09-10 |