Adobe Lightroom (Lr or LR) is a photo processor and image organizer developed by Adobe Systems for Windows and OS X. It allows viewing, organizing and retouching large numbers of digital images. Lightroom's edits are non-destructive. Despite sharing its name with Adobe Photoshop, it cannot perform many Photoshop functions such as doctoring (adding, removing or altering the appearance of individual image items), rendering text or 3D objects on images, or modifying individual video frames. Lightroom is written in the programming languages C++ and Lua.