Side-by-side comparison · paid tool, open source
Superhuman vs Zero
What we have checked about each, line by line. Every value shows where it came from and when we last confirmed it.
Paid tool
Superhuman
Fast, keyboard-driven email client with AI and follow-up reminders.
Open Source
Zero
Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first.
Checked facts
Line by line
| Measure | Superhuman | Zero |
|---|---|---|
| Latest version | Not checked yet | 0.1 (for 18 July 2025) |
| Days since the last commit | Not checked yet | 10 |
| GitHub forks | Not checked yet | 1,337 |
| GitHub stars | Not checked yet | 10,881 |
| Days to a first reply on issues | Not checked yet | 259.7 |
| Open issues | Not checked yet | 0 |
| Releases in the last 90 days | Not checked yet | 0 |
A line appears only when at least one record has a value we confirmed from a source. Values we have not confirmed are left out, never guessed. Records of different types share fewer lines.
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