French-language Higurashi fans may want to check out Tout d'Asie, which has copies of Version française du jeu higurashi no naku koro ni, renommé Le sanglot des cigales. This release contains Onikakushi, Watanagashi, and two mini-games, and comes on CD-ROM.
The game runs on PONScripter, which Uncle Mion maintains over at her ONScripter Corner. Speaking of which, there should be a more general PONScripter-based release of the Higurashi demo sometime in the near future (once Uncle gets it whipped into shape).
Joyeux Noël guys!
Mion
Update (March 22 2010):
We've added a link to the French version's official website, Le sanglot de cigales.