Inbox Zero is freemium — a usable free tier with paid plans above it. Shortwave is freemium — a usable free tier with paid plans above it. Both are listed under Email, Scheduling & Tasks, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
Inbox Zero is freemium — a usable free tier with paid plans above it and is listed for open-source codebase (9k GitHub stars), self-hostable for free. Shortwave is freemium — a usable free tier with paid plans above it and is listed for AI email assistant for Gmail. Both sit in Email, Scheduling & Tasks.
Neither — Inbox Zero and Shortwave are both freemium, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.
Choose Inbox Zero if you need open-source codebase (9k GitHub stars), self-hostable for free; choose Shortwave if you need AI email assistant for Gmail. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| Inbox Zero | Shortwave | |
|---|---|---|
| Pricing tier | Free tier + paid plans | Free tier + paid plans |
| Free to start | Yes | Yes |
| Category | Productivity & Workflow | Productivity & Workflow |
| Type | Email, Scheduling & Tasks | Email, Scheduling & Tasks |
| Listed capabilities |
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| Tags | inbox zero ai, open source email ai, ai email rules, cold email blocker, gmail ai assistant free | email, shortwave, assistant, gmail, ai, free |
| Website | getinboxzero.com | shortwave.com |
| Full page | Inbox Zero details → | Shortwave details → |
| Alternatives | Inbox Zero alternatives → | Shortwave alternatives → |