Thanks to the author and to the submitter.

Some of these are really works of art.

I especially love TinyScheme (BTW, did you know that it is embedded in the iPhoneOS?).

I thought Joy was pretty cool too, have never seen mention of it before. So many shiny things to play with, so little time...

There is another implementation of Joy, targeting the Parrot VM: http://wiki.github.com/TiMBuS/fun

To get hedgehog lisp compiling under OSX, I did this:

    tar zxvf hedge*
    cd hedge*
    mkdir o
    cd o
    TARGET_PATH=$HOME/opt
    [[ -d $TARGET_PATH ]] || mkdir $TARGET_PATH
    ../configure BSD $TARGET_PATH
    vim ../hh_common.h +69 # change to #include <sys/wait.h>
    make

If anyone knows how to get it to do STDIN please let me in.

Simplicity and minimalism are independent concepts. To use the author's example, converting 100 lines of linear code to 12 3-line functions is making things shorter (minimalist), and almost certainly is making it more interesting and fun, but also less simple and therefore more difficult to understand.

I wish I could upvote this twice. I love minimal/tiny languages.

Oh, that's me! Hecl is pretty small - it even runs on old cell phones with Midp 1.0 profiles. At least the smallest version of it does. The core itself is pretty small too.

Wow. I ignore HN (and my traffic logs) for a day and look what I miss.

Glad you guys like it!

Why isn't SQLite a part of this list?

Everything there is an implementation of a full (i.e., turing complete) programming language. SQL is not Turing Complete (at least not without non-standard recursion extensions, if memory serves).

> non-standard recursion extensions

WITH RECURSIVE queries are part of the SQL 99 standard.