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ICQ vs Kadu

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

ICQ icon
ICQ
Kadu icon
Kadu

ICQ vs Kadu: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature ICQ Kadu
Sugggest Score — —
Category Social & Communications Social & Communications
Pricing — Open Source

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

Kadu
Kadu

Description: Kadu is an open-source instant messaging client for Linux, Windows and macOS. It supports multiple protocols including Jabber/XMPP, Gadu-Gadu, Facebook Messenger, IRC and more. Kadu is lightweight, customizable and offers features like message encryption, group chats and file transfers.

Type: software

Pricing: Open Source

Key Features Comparison

ICQ
ICQ Features
  • Instant messaging
  • Voice and video calls
  • Group chats
  • File transfers
  • Offline messaging
Kadu
Kadu Features
  • Multi-protocol support (Jabber/XMPP, Gadu-Gadu, Facebook Messenger, IRC, etc)
  • Lightweight and fast
  • Customizable interface and themes
  • Message encryption
  • File transfers
  • Group chats
  • Plugin support

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
Kadu
Kadu
Pros
  • Free and open source
  • Cross-platform availability
  • Support for major IM protocols
  • Light on system resources
  • Highly customizable
Cons
  • Dated looking interface
  • Limited features compared to newer IM clients
  • Smaller user base than proprietary options
  • Development seems stagnant

Pricing Comparison

ICQ
ICQ
  • Not listed
Kadu
Kadu
  • Open Source

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Learn More About Each Product

ICQ
ICQ
Reviews, pricing & alternatives →
Kadu
Kadu
Reviews, pricing & alternatives →

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