These may not be a surprise to you but the popular electrical CAD package, Eagle, has add ons plugins, scripts or whatever they are technically called. Most of these would probably be really useful if I ever knew what I was doing but one stands out. Its called Eagle-up.
Eagle-up takes the PCB as you’ve laid it out and puts it into the equally popular 3D CAD programme Google Sketch up. The plugin allows you to see the PCB in 3 dimensions and allows you to add components from the extensive library or draw out your own. The end result is a potential a photo realistic rendering of what you have just designed. I’m using it to place the various parts on so I can design a case to fit the MSFduino. I want to laser cut an acrylic case and Sketchup let’s you export to an svg file by, you’ve guessed it, a plugin.
A bit of useful information to share if that’s your kind of thing.