I used Worldanvil, and I've got such mixed feelings about it. I think it's probably great for world designers, but can be really clunky if you use it for D&D and have any more of a world than a single province. The learning curve is ferocious !

Although I've still got a subscription, I think it's an expensive luxury I might stop next time it comes up for renewal. Word, Excel and good old fashioned pen and paper work just fine for me 😀