Slack review
Bottom line
Slack is a channel-based messaging platform that combines chat, audio and video huddles, file sharing, and automation in one workspace. Its clearest strength is how it pulls outside partners, customer records, and thousands of apps into the same conversation stream. The main cost to watch is the feature gap between tiers, since AI assistants, SAML single sign-on, and SCIM provisioning require Business+ and the most advanced controls require Enterprise+. Teams that run daily work through conversation and need external collaboration should consider it first.
What is Slack?
Slack is a workplace messaging platform built around channels, where teams discuss projects, share files, and make decisions in one searchable place. It is aimed at the problem of work scattered across email threads, direct messages, and separate meeting tools, which makes context hard to find and keeps people out of the loop. Slack Technologies, LLC, a Salesforce company, has offered the product since its acquisition by Salesforce in 2021.
Day to day, people work in channels that can be public or private, and anyone added to a channel can read back through past messages to catch up. Huddles provide built-in audio and video meetings with screen sharing, and Slack AI can generate meeting summaries with transcripts, key takeaways, and action items. Workflow Builder lets users automate recurring tasks like stand-ups and approvals, either by click or by code. Canvas and Lists handle documents and project tracking without leaving the conversation.
The product serves freelancers, small businesses, mid-size companies, and large enterprises. The Free plan includes 90 days of message history, up to 10 apps, and one-on-one huddles. Pro is priced at $7.25 per user per month billed annually and adds unlimited message history and app integrations. Business+ is priced at $15 per user per month billed annually and adds Slackbot, AI search, and SAML single sign-on. Enterprise+ pricing is available only by contacting sales.
What sets Slack apart is how tightly it connects conversations to other systems. Slack Connect lets teams work in shared channels with clients, vendors, and partners, and Salesforce channels bring customer records into a channel. The app directory includes more than 2,600 apps, and Slack offers an API and developer tools for building custom agents and automations.
Who it's for
- Teams that run daily work through channels and threads
- Companies that work with clients or vendors in shared channels
- Organizations that want AI summaries and search over conversations
Who should look elsewhere
- Organizations that need a free plan with unlimited message history
- Buyers who need published pricing for Enterprise+ tiers
Typical uses
- Project coordination in channels
- Shared work with clients and vendors through Slack Connect
- Automated stand-ups and approval workflows
- Customer work tied to Salesforce records
Slack user reviews
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Slack alternatives and comparisons
Slack is the only team communication product we list so far. Browse the category as more are added.