All of the things I have done professionally are proprietary and confidential, but here are a few side projects/hobby sites that I have done so you can see that I can, in fact, write code. Each has a credits page that lists the tools & technologies used.
My first site, started in 2003. Originally just my experiments with Unicode, but now includes file formats and physical media.
Online regular expression testing. Originally just a utility page on FileFormat.Info, but it got enough traffic to justify its own site. Now it has grown to support multiple flavors of regexes & a cookbook.
Printable label sheets. Another example of a utility page on FileFormat.Info that eventually deserved its own domain.
I needed consistently formatted logos for various projects (like RegexPlanet) and thought that others might find them useful.
Instant search for SVG logos with over 200,000 logos from over 100 sources. I made this after automating the searches I was doing for VectorLogoZone.
I realized the LogoSearch backend would work for things besides logos, so this is an instant SVG icon search using the same codebase.
A feeble attempt to document every number. Or to experiment with large datasets.
HTTP/HTTPS redirection for hosts. Useful for root->www and typo/obsolete domains.
Social sharing without privacy and performance issues.
DNS and network utilities and troubleshooting tools.
Use XSLT to make RSS feed links presentable to humans.
You’re looking at it! OMG, recursion! Stack overflow! Core dumped! Self destruct sequence initiated!
Project that are not running anymore but were pretty neat IMHO.
Redirect a naked domain to the www version. Again, something I needed for myself and thought would be useful to others. Superceded by redirect2.me.
See all your Google Analytics data on your big-screen TV. Not viable with new Google auth/permission changes.
ACH bank routing number lookup and API. The Federal Reserve removed the source data on 2018-12-09.