Rocket.Chat

Open-source · self-hostable · replaces 2 SaaS tools on os-alt

RocketChat/Rocket.Chat · alive · ★ 45.3k · last commit 1d ago · 3688 open issues

License: MIT — Core is MIT; some Enterprise features (engagement dashboard, advanced LDAP) are paid add-ons.

Good fit for Customer-facing scenarios (livechat plugin), regulated environments (on-prem with SSO + audit trail), and orgs that need omnichannel chat with email/WhatsApp gateways.

Weak at MongoDB ops surface — backups and upgrades are more involved than Mattermost's Postgres.

In a terminal? npx -y github:SolvoHQ/os-alt-cli microsoft-teams prints the Microsoft Teams comparison table including Rocket.Chat. how the CLI works →

Replaces these SaaS

Microsoft Teams · Team chat + video meetings
Pull `rocket.chat` and `mongo:6` via official compose. Teams migration: export channel/conversation data via M365 Compliance export, then use Rocket.Chat's HTTP REST API to bulk-create channels and post historical messages with the original timestamps and authors (community scripts handle the loop). Built-in voice/video calls use Jitsi Meet — install Jitsi alongside on the same VPS.
Slack · Team chat
Admin → Import → Slack. Upload Slack export .zip. Channels, users, messages and files import; private DMs do not unless the export includes them (paid Slack tier required).

README badges for the SaaS this replaces

Maintainers and forks: drop a badge in your README to link readers from the SaaS-comparison page back to your repo.