Slack

7.7AI-Powered

Slack replaces your company's internal email with organized group chats called channels.

Communicate & Collaborate

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What It Does

Organize conversations into channels by team, project, or topic so nothing gets buried in email
Automate routine tasks with Workflow Builder — no coding needed
Connect 2,600+ apps like Google Drive, Salesforce, and HubSpot directly inside Slack
Collaborate with outside partners through Slack Connect without sharing your full workspace
Get AI-powered summaries of channels, threads, and daily activity on every plan

Strengths & Weaknesses

Strengths

+2,600+ integrations connect Slack to almost any tool your business uses — from accounting to project management
+AI features included free on all plans, including channel summaries, daily recaps, and AI-powered search across connected apps
+Generous free tier includes SSO (single sign-on) and DLP (data loss prevention) — security features most competitors charge for
+Slack Connect lets you message clients, vendors, and partners directly — a feature no major competitor matches

Weaknesses

−Per-user pricing adds up fast — at $8.75/user/month (Pro), a 25-person team pays $218/month before add-ons
−Free plan limits message history to 90 days — older conversations disappear, which can be a problem if you need to reference past decisions
−Only 10 integrations on the free plan — most small businesses will hit that ceiling quickly
−Video calls lag behind Zoom and Teams — Huddles work for quick chats but lack features for formal meetings or webinars

AI Features

Slack's AI assistant works across your entire workspace. It can summarize any channel or thread so you can catch up in seconds instead of scrolling through hundreds of messages. It gives you a daily recap of what happened across your channels. You can ask it questions — like 'What did the sales team decide about the new pricing?' — and it pulls answers from your conversations. It also drafts messages, summarizes uploaded files, and translates text into other languages. The AI even suggests automations you can build with Workflow Builder. All of these features are included on every Slack plan, including the free tier.

STOA's Verdict

Slack is the best team messaging tool for small businesses that rely on lots of apps and outside collaboration. The 2,600+ integrations and Slack Connect make it the hub where your tools and partners come together. Just watch the per-user costs — at $8.75/user/month, it can get expensive as your team grows past 15-20 people.

Generate Your Own Learning Materials

Coming Soon

AI-generated training guides tailored to your team's size, skill level, and focus areas for Slack — coming in v0.3.2.

View our roadmap →

Slack

What It Does

Strengths & Weaknesses

Strengths

Weaknesses

Integrations

AI Features

STOA's Verdict

Generate Your Own Learning Materials

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User Reviews

Reviews coming soon