GroupSession

Japanese open-source groupware that's free when self-hosted, with paid cloud and ZION editions for extended features.

Editor

Jake's editor note
Still a compelling free option for Japanese teams with their own servers. Cloud is cheap, though the UI is clearly traditional.
Jake (황관희)
Founder, 5years+ · Operator, Crewless
Last updated: 2026-04-17

Key Features

• Scheduling and resource booking • Workflow • Bulletin boards and circulars • File sharing • Mobile support

Pricing

Free to self-host; cloud edition from ¥330/user/month.

FAQ

Truly free?

Self-hosted edition is free; support is paid.

SSO?

LDAP/SSO available on the ZION plan.

Data security?

Self-hosted data stays on your own servers.

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This page is drafted, translated, and periodically refreshed by the Crewtool AI Editor from public sources. Last checked: 2026-04-21.

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