| Ultimate Packer for eXecutables, binary version with proprietary NRV compression | |
| https://upx.github.io/ | |
| upx-bin-4.2.3 | GPL-2+ UPX-exception |
| download-* ~amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 ~x86 | gentoo |
| upx-bin-4.1.0 | GPL-2+ UPX-exception |
| download-* amd64 ~arm ~arm64 ~mips ~ppc ~ppc64 x86 | gentoo |