When comparing Matrix vs Keybase, the Slant community recommends Keybase for most people. In the question“What is the best team chat software?” Keybase is ranked 10th while Matrix is ranked 17th. The most important reason people chose Keybase is:
Completely end-to-end encrypted.
Ranked in these QuestionsQuestion Ranking
Pro Bridges other networks into a single decentralised network
Matrix has bridges to IRC (freenode, moznet, oftc, snoonet etc), Slack, Gitter, Rocket.Chat, XMPP, SMS, SIP and others. The point is to 'matrix' all the different networks out there into one single decentralised network.
Pro Built on an open standard
Matrix is an open standard, defining simple HTTP APIs so that devs can easily write their own clients, bots, bridges or servers. You're not locked into a specific set of implementations.
Pro Has an easy to use client called Riot
Riot.im is the easiest way to use Matrix, with great clients for Web, iOS and Android (and Fdroid).
Pro Does not require a centralized server to establish a connection between two users
Matrix is decentralized, there's no one central point that the information goes through and so no once central point of failure or control.
Pro Supports different kinds of communication
Matrix is designed to support Instant Messaging, VoIP/WebRTC signalling (voice and video) and Internet of Things communication.
Pro Offers choice of clients
Which can be found here.
Pro Has an app store for 3rd party integrations & bots
Riot.im includes an app store with integrations for Github, JIRA, Jenkins, Giphy etc - and anyone can add more via Matrix.
Pro Maintains full conversation history
Pro Has an active community behind it
Pro Can be integrated with existing communication services
Matrix is designed to support Instant Messaging, VoIP/WebRTC signalling and Internet of Things communication and allows cross-communication between those services. Meaning one person could be using IRC and another Slack for IMs, or one person could be using Skype and another Google Hangouts for videoconferencing.
Pro Matrix prioritizes direct messaging with people the same as Slack-style groups
Matrix aims to "provide an analogous ecosystem to email - one where you can communicate with pretty much anyone, without caring what app or server they are using" using a neutral identity system.
Pro End-to-end encryption
Matrix features end-to-end encrypted chats which are syncronized accross all your devices.
E2E is [implemented in the matrix-js-sdk library and Riot.im client](http://matrix.org/git/olm/about, http://matrix.org/git/olm/tree/docs/megolm.rst, http://matrix.org/speculator/spec/drafts%252Fe2e/client_server/unstable.html#end-to-end-encryption).
Pro E2E encrypted
Completely end-to-end encrypted.
Pro Identity verification
Users can publish proofs of identity (PGP public key, Twitter, Facebook, etc).
Free (as in beer) and Open Source Software.
Pro 250GB of free team file storage
250GB of free storage for encrypted files in a team.
Pro Public encrypted filesystem
For sharing files publicly.
Pro Encrypted file sharing
Securely share files.
Pro Public teams
Teams can be public with open access or admin-approved access. Opt-in to list public teams.
Pro Private teams
Teams can be completely private (access granted via admin-approval only, not publicly listed).
Pro Encrypted Git
Encrypted private or team Git repositories with automatic commit signatures.
Pro Blockchain technology
Based on blockchain technology.
Pro Sigchain verification
View/verify the cryptographic signature history of any user.
Pro PGP/GPG support
Encrypt/decrypt any PGP message or file with minimal effort.
Pro Public key encryption
Supports public key encryption.
Pro Private encrypted filesystem
Securely store personal files that only you can access.
Pro Shared private encrypted filesystem
Share files securely and privately with other users, a group of users, or a team.
Pro 250GB of free private file storage
250GB of free storage for privately-encrypted files.
Pro Free static site hosting
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.
Pro Emoji reactions to limit excessive posts and notifications
Pro E2E encrypted team chat
Teams are E2E encrypted, unlike Slack and other services.
Con Keys cannot be checked automatically
You cannot automatically check keys of your recepients. Only manually.