Solution: CometChat Air
A self-hosted Slack alternative.
A fully supported, proprietary team messenger that runs on your infrastructure, giving you complete control without the operational burden of open source or the compromises of the cloud.
Self-Hosted. On-Prem. Air-Gapped
A modern team messenger that runs entirely on your infrastructure, on-prem or air-gapped. CometChat Air is the self-hosted Slack alternative that keeps every conversation under your control.
113,000+
apps powered by CometChat
7M+
messages sent every day
163+
countries connected through CometChat
7ms
API response time
99.999%
uptime
The Gap
Slack is convenient, but not built for total control.
Slack is convenient. But when your team’s conversations contain customer data, legal discussions, IP, or internal operations, convenience is not the same thing as control.
Cloud Alternatives (Slack, Microsoft Teams)
Slack holds the encryption keys, not you, meaning your messages can be accessed and decrypted by the platform. With AI features and past security incidents affecting workspace data.
Open-Source Alternatives (Mattermost, Rocket.Chat)
Options including Mattermost and Rocket.Chat give you control, but they also give you the operational burden of upgrades, patching, integrations, and keeping the system running.
Consumer Apps (WhatsApp, Telegram)
When teams fall back to WhatsApp or Telegram, work conversations leave your organization’s control entirely. No retention policy, no audit trail, and no customer-controlled infrastructure.
Trusted Infrastructure
Deployment
Own your data. Deploy on your terms.
Start fully sealed and open up only if you need to.
- Air-gapped: Default
On-prem, self-hosted, no outbound connectivity. The whole messenger lives inside your network.
- On-prem, connected
Self-hosted, with selected services allowed to reach approved systems. You control exactly what's on.
A complete messenger
Everything your team expects from Slack, nothing they give up
Built on a decade of messaging infrastructure, not chat bolted onto a generalist tool. The full experience, ready on day one.
Comparison
Choose the right team messenger
Category
On-premise / air-gapped
Yes
No
Deployment
Self-hosted or managed
Cloud only
Who runs and maintains it
You or CometChat
Salesforce
Support
Enterprise SLA
Limited, even on paid
Mobile apps & notifications
Built in, reliable
Strong
Retention & admin controls
Included
Cloud-side
Data ownership
Your infrastructure
Vendor's servers
Open source
No
No
Where air-gapped isn't optional.
HIPAA-compliant messaging with a signed BAA. Coordination that stays inside the walls.
Built for the people who own the decision:
- IT
- CISO
- CIO
- CTO
- COO
- COMPLIANCE
- HR
Enterprise-Grade Security
Security and scale your team can verify
Certifications, encryption, and access controls your security and compliance teams can audit, running on infrastructure you own.
Let's map out how CometChat works for you.
30 minutes. Real answers. A plan you can actually act on.
Pick a time that works, talk to someone who knows the product.
Your use case shapes the call - no guessing, no repeating yourself.
No commitment. Just a straight conversation about how this fits - and if it doesn't, we'll say so.
Trusted by teams building conversations at scale.