When comparing Smuxi vs Konversation, the Slant community recommends Konversation for most people. In the question“What are the best IRC clients for Windows?” Konversation is ranked 16th while Smuxi is ranked 20th. The most important reason people chose Konversation is:
Konversation is still being updated with new features and bug fixes. Konversation 1.5(released January 15, 2014) has added plenty of major features.
Specs
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Pros
Pro Twitter integration
It's possible to check and interact with Twitter's timeline, replies and direct messages from the Smuxi client.
Pro Distributed
Smuxi offers an option to keep idling in a channel even when all front-end clients are closed. It's possible for a front-end client or multiple front-end clients to connect to a single server. This allows setting up an always on-line server that can be accessed from anywhere.
Pro Plugins and scripts can be written in any language
Pro Highly customizable interface
Pro Facebook chat, gTalk and Jabber integration
Smuxi has XMPP protocol support that allows integrating with Facebook chat, gTalk and Jabber.
Pro Theming support
Pro Caret mode
Caret mode allows navigating through messages (the output buffer) via keyboard.
Pro Regularly maintained
Konversation is still being updated with new features and bug fixes. Konversation 1.5(released January 15, 2014) has added plenty of major features.
Pro Notifications
Konversation has an OSD(On Screen Display) feature that gives you an overlay message anytime your nick is mentioned. This means you won't be interrupted from your work and reduces the need to keep the window open.
Pro Plenty of useful smaller features
Koversation is full of features to make IRC simpler and smoother. It comes with tools like a channel bookmarker, the ability to insert special characters easily and the "URL catcher", which gives quick access to any links mentioned in the channel.
Pro Quick Buttons
The Quick Buttons features allows you to set a button to any IRC command that you frequently use. It has several defaults such as whois, and kick but a button can be created for any command you need.
Pro Very professional UI design
Cons
Con Poor script and plugin library
Smuxi's script and plugin library contains less than 10 entries.
Con Updating to a new version overwrites configuration settings
Colors, fonts and autojoin behaviors may be customizable, but backing up the settings prior to updating the software is imperative.