© 2026 José Carrillo
Zefer vs Bitwarden Send
Free encryption with no account vs vault-integrated secret sharing. Detailed comparison.
TL;DR
Zefer is 100% free with no account required and 7 access control layers inside the encryption. Bitwarden Send is integrated into the Bitwarden vault, offers expiration and audit logs, but requires an account and file attachments require a premium subscription. Both encrypt in the browser.
Zefer
- AES-256-GCM + PBKDF2-SHA256
- Configurable PBKDF2: 300k / 600k / 1M iterations
- 7 security layers inside the encrypted payload
- Built-in password generator/analyzer and .zefer inspector
- CLI with an MCP server for AI agents
- WCAG 2.1 AA, PWA, dark/light mode
Bitwarden Send
- AES-256 within Bitwarden ecosystem
- Requires Bitwarden account
- File attachments on premium plan only
- Integrated with password vault
Feature comparison
| Feature | Zefer | Bitwarden Send |
|---|---|---|
| Strong encryption (256-bit) | ||
| 100% browser-based | ||
| File expiration | ||
| No account required | ||
| Completely free | ||
| Dual passphrase | ||
| Reveal key | ||
| Secret question | ||
| IP restriction | ||
| Vault integration | ||
| Audit log | ||
| Password generator & analysis | ||
| Encrypted-file inspector | ||
| AI integration (MCP server) |
Account and sign-up
Zefer requires no account, sign-up, or subscription. You open the site, encrypt, and share. Bitwarden Send requires a Bitwarden account, and file sharing features require the premium plan ($10/year). For simple text, Bitwarden's free plan is sufficient.
Access control
Zefer offers dual key, reveal key, secret question, IP restriction, and attempt limits, all inside the encrypted payload. Bitwarden Send offers expiration, access limits, and password protection, but without additional layers like secret question or IP restriction.
Pricing
Zefer is 100% free forever: text, files, all features, no limits. Bitwarden Send allows sharing text for free, but file sharing requires Bitwarden Premium ($10/year) or a teams plan ($4/user/month).
Choose Zefer if...
- You need files to expire automatically
- You want multiple security layers (dual key, secret question, IP)
- You share sensitive credentials with teams
- You need an installable PWA with full accessibility
Choose Bitwarden Send if...
- You already use Bitwarden as your password manager
- You need an audit log of access events
- Your team already has a Bitwarden subscription