- Enigmail
- GPGFrontend -- cross-platform
- GPGTools
- GPG-TUI -- my-favorite
- GPG4Win
- Keybase
- Lock
- PGPTool
- Pignus -- iOS (iPad/iPhone)
- Thunderbird
- Tumpa
- pgp.mit.edu -- popular
- keys.openpgp.org -- preferred
- keyserver.ubuntu.com -- dirmngr built-in default
- 0-Day
- Attacks on WKD
- OCT + Smartcard + Scute
- ROCA Vulnerability
- SHA-1 & Impersonation
- SKS Keyserver Network Under Attack
- SKS Keyserver Network Attack: Consequences
- Some historic user story
- Using a TPM with GnuPG 2.3
- Decentralized proofs
- Delete a UID from a GPG key
- Renew GPG key
- Signed Git commits on Windows
- Using Git with GPG
- Using GPG with SSH
- S/MIME for Email
- Forget about email security
- Guidance on E2E email security
- Use AES Crypt for file encryption
- Use signify for integrity checks
xkcd - responsible behavior :D
GitLab issue 24572