Programming and command line–related stuff

General

Weird indents: demonstrates some (non-serious) alternative indentation styles from a Twitter thread (requires JavaScript)
Bytes conversion: convert between binary, hexadecimal, and Base64, and between binary and various encodings

My programming languages

Esoteric programming languages: programming languages that I made that aren't intended to be useful
Experimental programming languages: languages that are intended to experiment with features that could potentially be useful in a full language (which these are not)

Command line utilities

plgrep: a grep replacement that uses Perl syntax, and some other changes to make it more like how I want grep to work
perl-repl: a program that allows you to type Perl commands and run them (like Python does when you just type python at the command line)
uuniq: like uniq, but matches lines that are not next to each other
See all (all require being able to download stuff)

JavaScript and web development

JavaScript == operator demo: demonstrates and explains JavaScript's type conversion rules, particularly as they apply to the == operator
JavaScript key events: press keys to see what key codes your browser uses and when key events happen (requires JavaScript)
Cookie public suffix test: tests how your browser determines what domains can have cookies

Haskell stuff

ChainCompare: make it easier to do x < y < z (requires being able to download stuff)
Function equality: defines instances of Show, Eq, and Ord for functions that have a small finite number of possible inputs (requires being able to download stuff)