IronHall compared
IronHall next to Microsoft Teams, Zoom, Slack.
Review draft. Competitor cells are unchecked; “To be checked” marks a gap on purpose.
| IronHall | Microsoft Teams | Zoom | Slack | |
|---|---|---|---|---|
| Chat and video meetings in one product | Yes | Yes | Yes | PartlyHuddles and calls |
| Chat on an open protocol (Matrix) | Yes | No | No | No |
| End-to-end encryption | PartlyAvailable for chat | PartlySome calls and meetings | PartlyOptional | No |
| Phone calls inside the app, with the desk phone ringing at the same time | Yes | Yes | PartlyZoom Phone is a separate product | PartlyCalls to numbers only via third-party calling apps (paid plans) |
| Guests join with a code or link and need no account | Yes | Yes | Yes | To be checked |
| Schedule meetings from a calendar view into the calendar your mail client reads | Yes | YesTeams meetings appear in Outlook/Exchange calendar both ways | YesTwo-way sync with Google Calendar, Office 365 and Exchange | PartlyNo own calendar; Google/Outlook Calendar apps (Outlook not for on-prem Exchange) |
| Appear offline, which also stops your phones ringing | Yes | To be checked | NoNo offline option; Available/Busy/DND/Away/Out of office only | NoOnly active/away plus pause notifications; no appear-offline option |
| Desktop apps for Windows and Linux | Yes | PartlyWindows app; Linux native app retired, web/PWA only | YesWindows and Linux (Ubuntu 20.04+, Debian 11+, RHEL 9+, Fedora, Arch) | PartlyWindows app; Linux app labelled beta (Ubuntu 22.04+, RHEL 9+) |
| Android app | Yes | Yes | Yes | Yes |
| iPhone app | PartlyInternal testing only; call audio not yet confirmed | Yes | Yes | Yes |
| Sign in with the company directory | Yes | Yes | YesSAML SSO incl. AD FS, Entra, Okta; Business/Education accounts and up | PartlySAML SSO (ADFS, Entra, Okta) on Business+ and Enterprise only |
| Voicemail | NoRemoved; to be rebuilt | Yes | Yes | To be checked |
| Federation with other organisations' servers | Planned | YesExternal access to other Microsoft 365 orgs' Teams; domain allow/block lists | PartlyZoom-to-Zoom external contacts; Teams/Slack bridging via Mio is internal-only | PartlySlack Connect links Slack workspaces only; no federation to other chat servers |