When comparing Konversation vs IRSSI, the Slant community recommends IRSSI for most people. In the question“What are the best IRC clients for Linux?” IRSSI is ranked 3rd while Konversation is ranked 4th.
Ranked in these QuestionsQuestion Ranking
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 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.
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 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 Persistent Connection
Pro Perl Scripting
Allows the user to create and use perl scripts to perform actions.
Pro Command line outputs can be sent to a channel or message
/exec -o figlet "Slant.co"
Allows the modification of IRSSI's look and feel.
Pro Free and open-source
Pro Has a plugin for encrypted communications
Con Crashes when trying to download search results (on Ubuntu 16.04)
Con Gives little direction upfront
Actually, Irssi.org has it's own GREAT documentation.
Con Cryptic configuration files
Con Can't do vertical splits
Untrue, there are perl scripts available to do split screens with
Con No GUI
Actually a plus, lower memory overhead