Wikipedia:Articles for deletion/KaXUL
Whilst I don't believe that just because a software product ceased being used long ago that's any rationale for deletion (see WordStar). However, neither the sources cited, nor searches on Google provide sufficient reason for me to believe this product meets 
— User:Nick, 00:51, 15 December 2017 (UTC)
Stance: delete
Cited policy: WP:NSOFT (Wikipedia:Notability)