AntimatterCompare
Antimatter vs Element (Matrix)
Element is the best-known app of Matrix, an open, federated protocol for secure chat. Its server can be self-hosted, with a paid suite for larger organisations.
Why teams choose Antimatter
- Built for teams and communities alike: threads, voice channels, roles and badges, onboarding and moderation tools.
- Apps built in: notes, whiteboards, kanban, playbooks, polls and todo lists, plus AI and call transcripts with your own models.
- Every feature included, with no paid server edition.
When Element (Matrix) may suit you better
- You need end-to-end encryption by default, everywhere.
- You want to federate with the open Matrix network, or bridge to other chat networks.
- You work with organisations that have standardised on Matrix.
Feature by feature
| Feature | Antimatter | Element (Matrix) |
|---|---|---|
| Hosting and licensing | ||
| Self-hosted on your own servers | ✓ Yes | ✓ Yes |
| Open-source server | ✓ YesAGPL v3 | ◐ Partlyenterprise features are proprietary |
| Every feature without a paid plan | ✓ Yes | ✕ No |
| Runs offline, without internet access | ✓ Yes | ✓ Yes |
| Messaging | ||
| Channels, direct messages and threads | ✓ Yes | ✓ Yes |
| Unlimited message history | ✓ Yes | ✓ Yes |
| Scheduled messages and reminders | ✓ Yes | ✕ No |
| Message priority and acknowledgements | ✓ Yes | ✕ No |
| Self-destructing (burn-on-read) messages | ✓ Yes | ✕ No |
| Automatic translation of channels | ✓ Yesself-hosted models | ✕ No |
| Calls | ||
| Voice and video calls with screen sharing | ✓ Yes | ✓ YesElement Call |
| Always-open voice channels | ✓ Yes | ◐ Partlyvideo rooms, experimental |
| Live captions and call transcripts | ✓ Yesyour own speech-to-text | ✕ No |
| Apps and AI | ||
| Collaborative notes and documents | ✓ Yes | ✕ No |
| Whiteboards | ✓ Yes | ✕ No |
| Kanban boards | ✓ Yes | ✕ No |
| Incident and process checklists | ✓ Yes | ✕ No |
| Polls | ✓ Yes | ✓ Yes |
| AI assistants with the models you choose, self-hosted included | ✓ Yes | ✕ No |
| Security and administration | ||
| Single sign-on (SAML, OpenID Connect) | ✓ Yes | ✓ Yes |
| LDAP and Active Directory sync | ✓ Yes | ◐ Partlysync in the paid server suite |
| Data retention and compliance export | ✓ Yes | ◐ Partlycompliance tools in the paid server suite |
| Federation with other servers | ✓ Yesshared channels | ✓ YesMatrix |
| End-to-end encryption of messages | ✕ No | ✓ Yes |
"Partly" means the feature needs a paid plan, an add-on or a plugin, or exists in a limited form; the note says which. Based on each product's public documentation as of October 2026: plans and features change, so check the vendor's own site before deciding. Spotted a mistake? Tell us.