# stratosphère stratosphère provides customization of the Horizon OS at the system level. This includes a reimplementation of several system modules and additional, custom system modules that extend or add a variety of features. ## Modules The modules currently provided by stratosphère are: + [ams_mitm](modules/ams_mitm.md) + [boot](modules/boot.md) + [boot2](modules/boot2.md) + [creport](modules/creport.md) + [dmnt](modules/dmnt.md) + [eclct.stub](modules/eclct.stub.md) + [erpt](modules/erpt.md) + [fatal](modules/fatal.md) + [jpegdec](modules/jpegdec.md) + [loader](modules/loader.md) + [ncm](modules/ncm.md) + [pgl](modules/pgl.md) + [pm](modules/pm.md) + [ro](modules/ro.md) + [sm](modules/sm.md) + [spl](modules/spl.md)