Mailvelope is a browser extension for OpenPGP encryption used for secure email communication.
Best OpenKeychain Alternatives ranked by AI · updated Aug 2026
OpenKeychain is an open-source OpenPGP key manager and encryption app for Android. It integrates with compatible Android email and file applications and is intended for users who need local control of their PGP keys.
Top 6 OpenKeychain alternatives
GPG Suite is a software package that enables easy encryption and decryption of files and emails using GPG (GNU Privacy Guard) on...
Kleopatra is a certificate manager and GUI for GnuPG. It allows you to manage certificates, encryption keys, and sign files easily.
FairEmail is an open-source, privacy-friendly email client for Android.
5
PGP Everywhere
FutureSpin, LLC
PGP Everywhere is an iOS app that adds OpenPGP encryption and signing to messages, files, and text across supported apps. It is...
Pros
- Works across many iOS apps instead of being limited to one email client
- Supports OpenPGP encryption, decryption, signing, and verification
- Keyboard and share extensions provide convenient mobile workflows
Cons
- Less capable than desktop PGP suites for key management and bulk operations
- iOS extension restrictions can limit integrations with some apps
- Not a full email service or dedicated secure mailbox
Paid app; price varies by region
FlowCrypt is an OpenPGP email encryption tool for Gmail and supported browser environments. It is built for people who want encrypted email...
Pros
- Streamlines PGP email for Gmail users
- Supports OpenPGP encryption and digital signatures
- Provides a simpler setup than many desktop key-management tools
Cons
- More limited outside supported email and browser workflows
- Advanced key-management features are less extensive than GnuPG tools
- Some features require a paid plan
Freemium, paid plans available
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