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Slack — Team Messaging (Freemium)

Slack is a freemium Team Messaging solution from Salesforce. Compare it against 2 other Team Messaging tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Slack?

Slack uses a freemium model — a usable free tier is available, with paid plans that unlock advanced features, higher limits and priority support. It is categorised under Team Messaging and published by Salesforce. Buyers typically evaluate Slack when they need a dependable Team Messaging option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Slack alternatives

If Slack isn't the right fit, compare these Team Messaging alternatives side by side:

MattermostRocket.Chat

Frequently asked questions

Is Slack free?
Slack offers a free tier under a freemium model; advanced features and higher limits require a paid plan.
What are the best Slack alternatives?
Popular Team Messaging alternatives to Slack include Mattermost, Rocket.Chat. See the full list of Team Messaging on FreeSoftwareX.
What type of software is Slack?
Slack is a freemium Team Messaging tool developed by Salesforce.

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