A small tool to check What is my IP address?. Plus some MaxMind GeoIP data like city, country or longitude and latitude of an IP.
A small tool for Base64 encoding end decoding.
A small online tool to URL encode and decode strings.
A small tool to beautify or minify JSON data.
I would like to collect here a small set of random value generators that I use pretty often.
One more common tool that is fun to write and that I use pretty offen. A tool that converts timestamp to date.