Oktalyzer was able to do software mixing of audio channels. For each of the four audio channels available on the Amiga, you could choose to have normal playback or two downmixed virtual channels, at the expense of reduced audio quality. This way it was possible to play up to eight channels in total, but the decreased audio quality and required processing power made software mixing unusable in most cases.
Oktalyzer had a bigger and more intuitive user interface than most trackers at that time, but it also suffered from severe limitations like the inability to address add-on soundcards or utilize any extra processing power of faster CPUs. Also, Oktalyzer does not work on modern add-on graphics boards.