tavon.org

This is a collaborative project that aims to provide for Common Lisp
something similar to the Perl
Cookbook published by O'Reilly. More details about what it is and what it
isn't can be found in this

thread from comp.lang.

Following the great Perl
Cookbook (by Tom Christiansen & Nathan Torkington, published by
O'Reilly; you can freely browse an excerpt of the book
here)
which presents a suite of common programming problems solved in
the Perl language, this project aims to gather fans of programming, in
order to implement the solutions in other programming languages.

PLEAC - Programming Language Examples Alike Cookbook for Ruby

Schematics Scheme Cookbook