Slack
#1 in Business Communication · Rated 4.6
Team messaging with AI and broad app integrations
Slack is a leading team messaging platform that centralizes conversations, files, and apps in one workspace. It offers channel-based collaboration, direct messages, huddles for quick audio meetings, and Connect capabilities for secure external communications. As part of Salesforce’s ecosystem, Slack emphasizes AI-assisted search, summaries, and workflow automation on paid plans, while maintaining a generous free tier. In 2025, Slack expanded Salesforce and AI capabilities across plans, with pricing updates that keep higher-value features behind paid tiers. Slack appeals to mid-to-large teams that want a single workspace with thousands of integrations (including Salesforce, Jira, Google Drive, GPT-based tools, and more) to reduce tool fragmentation. Its differentiator is depth of integrations, developer-friendly automation, and its “work operating system” positioning, which aligns well with product-minded teams and enterprises already invested in the Salesforce ecosystem.
Features
- Unlimited message history (on paid plans)
- Unlimited app integrations (2,600+)
- AI-powered conversation/summary features
- Huddles for quick audio/video chats
- Slack Connect for external collaboration
Pros
- Extensive app ecosystem and integrations
- Strong AI-assisted search and summaries on paid plans
- Robust security and admin controls
Cons
- Can get expensive at scale
- Overload of apps can complicate governance