You can also use a syntax similar to Graphviz' dot language within TikZ, and either position the nodes manually or, as with Graphviz, let TikZ position them aut

You can also use a syntax similar to Graphviz' dot language within TikZ, and either position the nodes manually or, as with Graphviz, let TikZ position them automatically with a choice of layout algorithms. You use LuaTeX, and the layout is calculated by a Lua program: https://lwn.net/Articles/640302/ https://lwn.net/Articles/640302/ So you can get the best of both worlds, doing everything within TikZ/LuaLaTeX.