Smile is described as 'Simple emoji picker for linux with custom tags support' and is an app. There are three alternatives to Smile for a variety of platforms, including Linux, BSD, KDE Plasma, Flathub and Mac apps. The best Smile alternative is EF*CK Chat Keyboard, which is both free and Open Source. Other great apps like Smile are GNOME Characters and Emoji Picker.
EF*CK is a free cross-platform open-source on-screen desktop emoji keyboard, with built-in text-filter-based emoji picker, Unicode text converter, meme GIF search function ...
Characters is a simple utility application to find and insert unusual characters. It allows you to quickly find the character you are looking for by searching for keywords.
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