Several tools can put a map on a page, and they are not interchangeable. These comparisons lay out what each one actually produces, what it costs, and when it is the better choice than World in Dots — including the cases where it clearly is.
A free online pixel map builder with a large projection and map library.
An open-source JavaScript library for generating dotted SVG maps in code.
A free click-to-colour map maker for choropleth and thematic maps.
Licensed HTML5/JavaScript interactive maps for embedding in websites.
A WordPress plugin for building interactive maps inside WordPress.
The quickest way to find out is to make one. The editor is free to open, needs no account, and will tell you in about a minute whether a dotted map is the look you were after.
Open Map Editor