Do you want to use #Mastodon on the desktop?

The default website interface is excellent, and there's an optional multicolumn Tweetdeck-style "advanced" mode:

➡️ https://fedi.tips/how-to-activate-mastodons-tweetdeck-style-advanced-web-interface/

There are also many third party desktop apps:

➡️ @sengi_app - Free open source Linux, Mac & Win

➡️ @tokodon - Free open source Linux

➡️ https://tuba.geopjr.dev - Free open source Linux

➡️ @MonaApp - Mac, iPhone & iPad

➡️ @ivory - Mac, iPhone & iPad

➡️ @elk - Alternative web interface for Mastodon