KISS has been ported to various architectures by the Community. The following projects are not affiliated with KISS. While KISS only officially supports x86_64, Changes are made to KISS (where possible) to make the porting process easier.
Source: https://mcpcpc.github.io/jedavies-dev/kiss-aarch64
Source: https://mcpcpc.github.io/jedavies-dev/kiss-armv7
Source: https://mcpcpc.github.io/jedavies-dev/kiss-ppc64le
Source: https://mcpcpc.github.io/arvl130/kiss32-repo (musl) https://mcpcpc.github.io/arvl130/kiss32-uclibc-repo (uclibc) https://mcpcpc.github.io/arvl130/kiss32-glibc-repo (glibc)