Free Map Making Sites

Azgaar's Fantasy Map Generator is probably the best fantasy map making site I know, the map making is simple and looks very nice. You can customize almost everything to your liking including, the topography, rivers, roads, settlements and more.

Watabou is a medieval city generator, there are options that allow users to customize the gen and make it their own. This gen is really simple but looks great nonetheless.

Redblobgames has an interesting little map generator, its good for when you need some inspiration. It generates one landmass that you can customize a bit.

Inkarnate is another fantasy map making tool, it features a classic fantasy map style with great detail. You can use it for free but if you want access to more content you'll have to pay.

Visme is a site for making visual content. It has a map making info-graphic option which looks very nice and professional. There is a paid option which gives you access to more features.

Maphub is a real world map making site. It lets you place markers to which you can add images and descriptions, you can also can change the style of the map.