Drilldown: tool
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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 events are always free. Paid tickets: ~3.7%+$1.79/ticket plus 2.9% payment
processing, no fee cap. Pro email tiers $15-100/mo (nonprofits get 50% off after
verification). (1)
None (1) ·
Event listing, promotion, and ticketing -- event pages, RSVP/ticket
sales, and email promotion to an audience list. Free to publish and manage free
events with no platform fee; fees only apply to paid ticket sales. (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)
None (1) ·
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) ·
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)
Showing below up to 3 results in range #1 to #3.


