Slack

Slack organises a community into channels, threads and searchable history, which is what a paid membership community usually needs once a Discord server stops being enough. The free plan keeps ninety days of messages and ten app connections, and that history limit is what pushes most groups onto a paid plan rather than any feature. Guests from outside the workspace can be given a single channel. Paying by seat means a large free community costs more here than on software priced per workspace.

Free keeps ninety days of messages and ten app connections, which is the constraint that decides most upgrades rather than any missing feature. Pro at $8.75 per user a month removes both limits and adds group meetings and external messaging. Business+ at $18 adds the deeper AI and single sign-on. Both paid cards were captured mid-promotion at half price for three months, with the standing figures printed beside the discounted ones.

A paid community or a working team whose conversation needs to be findable later, particularly one selling access where members expect a professional room rather than a gaming one. Per-seat pricing suits a group that is small and paying. Anybody running a large free community will find the seat count makes this the most expensive option on the page, and should look at software priced per workspace.