Chemcraft is a graphical program for working with quantum chemistry computations. It is a convenient tool for visualization of computed results and preparing new jobs for the calculation. Chemcraft is mainly developed as a graphical user interface for Gamess (US version and the PCGamess) and Gaussian program packages. For working with other formats of calculations, the possibility to import/export coordinates of atoms in text format can be easily used. Chemcraft does not perform its own calculations, but can significantly facilitate the use of widespread quantum chemistry packages. Chemcraft works under Windows and Linux (but the Linux version has some disadvantages).