GPGTools Alternatives [Page 6]

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Open Source

Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day...

AirDroid Business, an enterprise-grade MDM solution, is designed to enable businesses mobility and productivity through remote access and control, device provisioning, policy application and management, kiosk mode, and geofencing.

Try for free paid Free Trial $12.0 / Annually

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.

Mailvelope open source project. OpenPGP in your browser.

Cryptshare is an online security company that gives its facility in securing your emails, uploading large files on cloud platforms to provide you with its compliance.

Take back your email privacy today with StartMail, encrypted email made easy. Secure email service protected by Dutch privacy laws to keep your data safe.

Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

freemium

LUKS is the standard for Linux hard disk encryption.

EncFSMP, a program to mount EncFS folders on Windows and OS X.

Elegant user management, tailor-made for B2B SaaS

Try for free freemium

The only all-in-one enterprise CASB and SaaS security provider to audit activity, protect data end-to-end, and enforce policies on Dropbox, Google Drive, OneDrive, and Slack.

Exceeding industry requirements for SSL security and the issuance/management of digital certificates, Entrust is a trusted source for secure socket layer protection.

Time management software that shows you how you spend your time & provides tools to help you be more productive.