Compare Mattermost and Jami on pricing, features, platforms, and ratings — both Team Chat tools, Freemium vs Free pricing to decide which fits your team.
At a Glance
Mattermost
Jami
Primary category
Team Chat
Team Chat
Rating
Not documented
Not documented
Pricing model
Freemium
Free
Starting price
Free (Starter, self-hosted); Professional from $10/user/month
Free
Free plan
Yes
Not documented
Free trial
Not documented
Not documented
Platforms
Web, iOS, Android, Mac, Windows
iOS, Android, Mac, Windows
Team collaboration
Not documented
Not documented
AI features
Not documented
Not documented
Public API
Not documented
Yes
Pricing Compared
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
Mattermost
Starter — Free N/A
Professional — $10/user/month annual
Enterprise — Custom annual
Jami
Free — Free N/A
Pros & Cons
Mattermost
Pros
Fully open-source core with self-hosted and air-gapped deployment options
Strong fit for regulated industries, government and defense customers
Playbooks provide built-in workflow automation not native to Slack
Deep integrations with developer and DevOps tooling
Lightweight architecture (single Go binary) makes self-hosting comparatively simple
Cons
Smaller app/integration marketplace than Slack or Microsoft Teams
Enterprise pricing is custom-quoted and not publicly transparent
Self-hosting requires ongoing server maintenance and updates
UI and mobile experience is generally considered less polished than Slack
Annual prepaid billing only for official Professional and Enterprise licenses, no monthly option
Jami
Pros
Completely free with no ads, limits, or paid tiers
True peer-to-peer design means no company holds message content
Backed by the Free Software Foundation as an official GNU package
Works across all major desktop and mobile platforms
Can operate entirely offline over a local network
Cons
Smaller user base than mainstream messengers like Signal or WhatsApp makes adoption harder
Peer-to-peer calls can be less reliable than server-relayed calls behind restrictive NATs or firewalls
Interface and onboarding are less polished than commercial competitors
Group features and conferencing are less battle-tested at large scale
No official enterprise support contracts beyond community and Savoir-faire Linux consulting
Use Cases
Mattermost
Incident response and DevOps workflows — Engineering teams use Playbooks to coordinate incident response with automated checklists and dedicated channels.
Regulated and government communication — Public-sector and financial-services organizations need self-hosted or air-gapped messaging to meet compliance requirements.
Secure internal team chat — Organizations that want Slack-like messaging while keeping full control of where data is stored.
Jami
Private peer-to-peer team communication — Privacy-conscious organizations use Jami for internal messaging and calls that never transit a third-party server.
SIP-compatible calling — Users connect Jami to existing SIP telephony infrastructure for interoperable voice calling alongside peer-to-peer contacts.
Offline local-network messaging — Teams or households on the same local network use Jami to message and call without needing internet access.