.CELTX File Extension

Project created with Celtx, an all-in-one media pre-production software program; includes project scheduling, screenplay development, and storyboard creation features; all data is stored in a database format within a single CELTX file.

Celtx can be used for film, video, radio, theater, video games, music videos, podcasts, videocasts, and comic strip projects. CELTX is an acronym that stands for "Crew, Equipment, Location, Talent and XML." It is pronounced "kell-ticks."