Firefox AlternativesOnly apps categorised as IRC Clients

The best IRC Client alternative to Mozilla Firefox is SeaMonkey, which is both free and Open Source. If that doesn't work for you, our users have ranked more than 100 alternatives to Mozilla Firefox, but unfortunately only one of them is a IRC Client.

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Mozilla Firefox alternatives are mainly Email Clients, but if you're looking for IRC Clients or Web Browsers you can filter on that. Other popular filters include iPhone, Kindle Fire, Mac, Linux, Open Source, Android and Integrated into iOS. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Mozilla Firefox.
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Alternatives list

  1. SeaMonkey icon

    SeaMonkey

     241 likes
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    Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.

    186 SeaMonkey alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    SeaMonkey screenshot 1
     
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    11
    52
    Comments about SeaMonkey as an Alternative to Mozilla Firefox
    Top Positive Comment
    mzs_47
    2

    Lighter on resources, had UI we were used to in old Firefox(version 3.x), some features like webRTC might be missing.

    Top Negative Comment
    dabockster
    1

    Based on an outdated version of Firefox. Has trouble rendering most websites. Can also crash more.

    solandre-wyze-ap-shelta
    Positive
    0

    Useful as a fallback and for testing things.

    Show more comments
    3 of 11 comments
    Mozilla Firefox Icon
    SeaMonkey icon

    • Most users think SeaMonkey is a great Mozilla Firefox alternative.

    • SeaMonkey is Free and Open SourceMozilla Firefox is also Free and Open Source
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