Drilldown: tool
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pricing:
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$4.99/mo, or $3.99/mo billed annually (free tier available) (1) ·
Commercial/Government/Defense tiers are custom-priced (free self-hosted Community
edition available) (1) ·
Free -- it's an app on top of the Nextcloud instance you already run (1) ·
Free -- zero extra cost if you already run Nextcloud (e.g. for Office Suite).
If not, standing up Nextcloud itself is also a free self-hosted install (see that
entry for full pricing/hosting details). (1)
source license:
hosting:
description:
None (2) ·
CalDAV-based shared calendaring app bundled with Nextcloud: team calendars,
event invites, resource booking. Zero extra infrastructure if your org already runs
Nextcloud for Office Suite (see that entry for full pricing/hosting details) -- this
is just enabling the calendar app on the same instance. (1) ·
MIT-licensed, self-hostable team chat with channels, voice/video, and broad
integration support. Its omnichannel inbox unifies live chat, email, WhatsApp, and
Telegram into one agent queue -- useful if you also want to replace a separate
customer-support tool, not just internal chat. (1)
usage notes:
Has the most GitHub momentum of the self-hosted Slack alternatives
(~45k stars). The free Community edition covers most day-to-day needs; exceeding
Starter-plan limits blocks adding new users but does not lock you out of existing
data. (1) ·
Syncs with any CalDAV-compatible client (Thunderbird, most phone calendar
apps) so people aren't locked into a web UI. (2) ·
Zero-access encryption means Proton cannot read message content or hand
it over even under legal request -- worth flagging for teams handling sensitive
organizing communications. No self-hosting option; mail is hosted on Proton's own
infrastructure in Switzerland. (1)
rejected alternatives:
category:
Showing below up to 4 results in range #1 to #4.