Putty (windows only) is sorta something else entirely. It’s primary usecase is/was to offer ssh connections at all. Windows does have oppenssh built in since 5 or so years, so putty itself isn’t necessary anymore. Due to the tool being in its infancy (literally a single feature) it obviously falls short to putty where you can also save your servers iirc, I haven’t used putty in quite a while.
Tl:dr I plan on implementing a lot of features which will make it completely different from putty and also cross-platform