Quassel IRC
Quassel IRC: A focused open-source IRC client for teams that value persistence over modern chat features. Ranked #54 of 63 in Team Chat Apps by our editors (3.5/10); pricing: Free plan; best for open-source IRC teams.
At a glance
- Editor score3.5 / 10
- PricingFree plan
- Best forOpen-source IRC teams
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Persistent IRC sessions survive client attachments and detachments
- Supports multiple IRC networks with searchable logged backlogs
- Runs on Linux, Windows, and macOS with SSL client-to-core encryption
Where it doesn't
- Lacks integrations with broader team-chat ecosystems
- Does not provide modern team-chat features
- Desktop-focused experience with no built-in AI features
Our verdict on Quassel IRC
Quassel IRC is a free, open-source IRC client built with Qt for teams and communities that already work through IRC. It supports Linux, Windows, and macOS, making it suitable for users who want a consistent desktop client across those platforms. Its strongest audience is open-source IRC teams that need persistent sessions, multiple network connections, channel and query views, and searchable conversation history rather than a broader workplace messaging suite.
The defining feature is Quassel's distributed client/core architecture. A central core maintains IRC connections while graphical clients attach and detach without losing session state. This is useful for users who want IRC activity to continue independently of the desktop client. The monolithic mode combines the client and core locally for a simpler all-in-one setup. Quassel also includes dockable nick lists and topic bars, backlog logging, log searching, and support for multiple IRC networks. These capabilities give it more continuity and organization than a minimal IRC client while keeping the product focused on IRC workflows.
Quassel's open-source model makes the core software free, with no commercial tiers to compare. Its security-related features include SSL encryption between the client and core, plus Blowfish encryption for channel or query messages. However, the product remains narrow in scope: it does not offer the integrations or modern team-chat features associated with broader collaboration platforms, and it has no built-in AI features. Choose Quassel if persistent IRC sessions, cross-platform desktop access, logging, and network flexibility are priorities. Choose another team chat app if your group needs a wider integration ecosystem or contemporary workplace messaging tools.
Your product? Our editors can test Quassel IRC in depth and publish a review, labelled as paid · from $149/mo →
Quassel IRC pricing
Quassel IRC fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Channels | Yes |
| Guest access | Not verified |
| Message history | Not verified |
| Integrations | Not verified |
| Supported platforms | Linux, Windows, macOS |
| Maximum members | Not verified |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | quassel-irc.org |
| Facts checked | 20 Sep 2026 |
Alternatives to Quassel IRC
- Microsoft TeamsA broad team chat workspace with a free plan and deep Microsoft 365 integration.9.4
- SlackA capable team-chat hub for integration-heavy teams, with limited free history.9.3
- Zoho CliqA broad team chat suite with strong Zoho ecosystem fit and a capable free plan.9.1
See all Quassel IRC alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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