Limulus polyphemus is the Atlantic horseshoe crab.

Eric McCarthy

That’s me. I write software. I live in Tucson, Arizona where I’m the owner of Unallocated LLC. I mostly write JavaScript, but I also know C, Perl, HTML, CSS and little bits of lots of other languages.

You might know me from Tucson Web Stackers (formerly TucsonJS), a monthly web development meetup that I co-organize.

In March 2018, I got married! That link is to the website I wrote using React.


Feel free to email me at


Here are some other places I put stuff.