Exist

Exist may refer to: Existence eXist, an open source database management system built on XML Existential quantification, in logic and mathematics (symbolized by ∃, read "exists") Energetic X-ray Survey Telescope, a proposed hard X-ray imaging all-sky deep survey mission Exist (album), a studio album by Exo Exists (band), formerly Exist, a Malaysian band Exists (film), a 2014 horror film XIST (gene) X inactive specific transcript, a gene which inactivates extra copies of X-chromosomes.