AutoREALM (link) is similar to Campaign Cartographer and some others. But I highly recommend bumping to Wonderdraft once you're able to do so. Source: over 2 years ago

Autorealm - An old but moderately capable map maker. Free with a lot of tutorials. Much more on the CAD side of things than something like Wonderdraft. Source: about 3 years ago

And fantasia Archive ( https://fantasiaarchive.com/ ) to structure the rest and organize the worldbiilding and the adventures. If you want to integrate images to fatasia archive, you must use online hosting (imgur the best). And go on the discord, there is a command pinned (it just an html image reference) to link your images. The underlining code of Fantasia archive is in markdown but there is a WYSIWYG editor.... Source: about 1 year ago

If you don't like this method, there are other technological alternatives. Some are online (and have small prices) like World Anvil, Campfire, Inkarnate (not a writing tool, but it's a crazy good mapmaking tool). If you don't want something online with a pricetag, try Fantasia Archive, which is free and not online. It's not as good as the online tools, but it's still great. I've been trying it for some weeks now... Source: over 1 year ago

I had been using Fantasia Archive, but updates have unfortunately been very slow over the last couple years, and I was already thinking about jumping ship. This might be a good chance to do so. 🤔. Source: almost 2 years ago

I've found Fantasia Archive to be a great way to keep things neat. Source: almost 2 years ago

Both Fantasia Archive and World Maker are downloadable, free, open source projects (I haven't actually used either, but they look decent). Obsidian is also a decent free option for a desktop/personal wiki, though not worldbuilding specific. There's a guide to using it as a GM tool, which is similar to worldbuilding. Source: almost 2 years ago