Kontakt style software without sound editing

For win and for osx a software for controlling the audio samples through the midi ports. In summary I would need something in Kontakt style but very light and without sound editing. I just need to control their execution through a midi input. For each midi channel, each sample should be able to be assigned to one key or several keys. The software must be able to import audio samples and assign them to one of the 16 midi channels.