TeleMessage vs Keybase

They've been in the messaging business for over 15 years. Not a start-up, and use carrier-grade infrastructure.

They offer a bunch of APIs that you can integrate with own apps to automate messaging.

While the solution includes an app, messages can also be sent from a computer or Outlook. It can send data messages, text messages, voice messages, etc (as long as there are enough message credits).

An organization's mobile messaging can be managed by an administrator. That means admins can add, delete or suspend users and enforce messaging policies.

TeleMessage uses end-to-end encryption, with an additional encryption layer while data is in transit. It also offers a bunch of other security features such as PIN lock, time limited messaging and forward locking.

Completely end-to-end encrypted.

Users can publish proofs of identity (PGP public key, Twitter, Facebook, etc).

Free (as in beer) and Open Source Software.

Securely share files.

For sharing files publicly.

250GB of free storage for encrypted files in a team.

Teams can be public with open access or admin-approved access. Opt-in to list public teams.

Teams can be completely private (access granted via admin-approval only, not publicly listed).

Encrypted private or team Git repositories with automatic commit signatures.

Based on blockchain technology.

View/verify the cryptographic signature history of any user.

Encrypt/decrypt any PGP message or file with minimal effort.

Supports public key encryption.

Securely store personal files that only you can access.

Share files securely and privately with other users, a group of users, or a team.

250GB of free storage for privately-encrypted files.

Host a public static website for free. Sites are automatically viewable via keybase.pub if an index.html or index.md exist in your public files.

Teams are E2E encrypted, unlike Slack and other services.