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ICQ vs Slack

Professional comparison and analysis to help you choose the right software solution for your needs.

ICQ icon
ICQ
Slack icon
Slack

ICQ vs Slack: The Verdict

⚡ Summary:

ICQ: ICQ is an instant messaging client and software that was first released in 1996. It became popular in the late 1990s as one of the first multi-platform instant messaging clients. Key features of ICQ include one-on-one and group text chats, voice and video calls, offline messaging, and file transfers.

Slack: Slack, the modern messaging platform for teams. Communicate in real-time, organize conversations into channels, and streamline collaboration. With integrations, file sharing, and a user-friendly interface, Slack enhances team communication and productivity.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature ICQ Slack
Sugggest Score — 33
User Rating — ⭐ 3.8/5 (40)
Category Social & Communications Social & Communications
Pricing — free
Ease of Use — 4.1/5
Features Rating — 4.1/5
Value for Money — 3.1/5
Customer Support — 3.1/5

Product Overview

ICQ
ICQ

Description: ICQ is an instant messaging client and software that was first released in 1996. It became popular in the late 1990s as one of the first multi-platform instant messaging clients. Key features of ICQ include one-on-one and group text chats, voice and video calls, offline messaging, and file transfers.

Type: software

Slack
Slack

Description: Slack, the modern messaging platform for teams. Communicate in real-time, organize conversations into channels, and streamline collaboration. With integrations, file sharing, and a user-friendly interface, Slack enhances team communication and productivity.

Type: software

Pricing: free

Key Features Comparison

ICQ
ICQ Features
  • Instant messaging
  • Voice and video calls
  • Group chats
  • File transfers
  • Offline messaging
Slack
Slack Features
  • Real-time messaging
  • Organized channels
  • File sharing
  • Integrations
  • Searchable message archives
  • Customizable notifications
  • Video calling
  • Third-party app integration

Pros & Cons Analysis

ICQ
ICQ
Pros
  • Cross-platform availability
  • Easy to use interface
  • Large user base
  • Free basic version available
Cons
  • Limited features in free version
  • Privacy concerns
  • Ads in free version
Slack
Slack
Pros
  • Intuitive interface
  • Robust free plan
  • Great for team collaboration
  • Highly customizable
  • Strong security
  • Powerful search
  • Numerous integrations
Cons
  • Can be distracting with notifications
  • Free version lacks some features
  • Steep learning curve initially
  • No end-to-end encryption
  • Mobile app lacks some desktop features

Pricing Comparison

ICQ
ICQ
  • Not listed
Slack
Slack
  • free

⭐ User Ratings

ICQ

No reviews yet

Slack
3.8/5

40 reviews

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Learn More About Each Product

ICQ
ICQ
Reviews, pricing & alternatives →
Slack
Slack
Reviews, pricing & alternatives →

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