CLIP STUDIO PAINT is a drawing software that emerged as the successor to ComicStudio and IllustStudio, both developed by CELSYS. It is commonly abbreviated as CSP, with a PRO version focused on illustration and an EX version with enhanced comic features. When CSP was still called CLIP PAINT Lab (open beta), it received widespread acclaim on pixiv.
Clip Studio Paint - Japanese Anime Illustration & Drawing Software Website
