| isl was written by | |
| Sven Verdoolaege | |
| 2006-2007 Leiden Institute of Advanced Computer Science | |
| Universiteit Leiden | |
| Niels Bohrweg 1 | |
| 2333 CA Leiden | |
| The Netherlands | |
| 2008-2009 K.U.Leuven | |
| Departement Computerwetenschappen | |
| Celestijnenlaan 200A | |
| B-3001 Leuven | |
| Belgium | |
| 2010 INRIA Saclay - Ile-de-France | |
| Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod | |
| 91893 Orsay | |
| France | |
| The quicksort implementation was written by Douglas C. Schmidt. |