⭐ Lisa's Pick
Signal
Privacy is possible. Signal makes it easy.
Open Source
E2E Encrypted
Zero Knowledge
No Logs
Audited
Free
Entirely free. Funded by donations and grants.
Visit Signal →
Direct link – we don't earn from this recommendation
Quick Specs
| Open Source | ✓ Yes View code |
|---|---|
| E2E Encrypted | ✓ Yes |
| Zero Knowledge | ✓ Yes |
| Self-Hostable | ✗ No |
| No Logs Policy | ✓ Yes |
| Audited | ✓ Yes |
| Jurisdiction | United States |
| Pricing | Free |
About Signal
Signal is the gold standard for encrypted messaging. The Signal Protocol is used by WhatsApp, Facebook Messenger, and others, but Signal itself collects virtually no metadata. Run by a nonprofit foundation.
Best For
Any organization needing secure internal messaging
Lisa's Take
The default secure messenger. We make nothing from this recommendation. If you need encrypted team communication, start here.