This is the homepage for the National Center for Subcomputing Applications.
It is devoted to making people dig up those old XT's, PS/2's, 286's, 386's, and 486's and run Unix on them.
Several free variants of unix are listed below with their minimal system requirements.
| Name | Processor | RAM | HDSpace |
| VSTa | 386 | 2M | 15M |
| Linux | 386 | 2M | 40M |
| Elks | 8086 | 512k | 460k |
| FreeBSD | 386 | 4M | 60M |
| Hurd | 386 | 8M | 270M |
| MinixTiny | 8086 | 640k | 2M |
| MinixSmall | 286 | 640k | 20M |
| Minix | 386 | 2M | 20M |
| RT-Linux | 386 | 4M | 50M |
| 4.4BSD-Lite | 486 | 8M | 300M |
| Lites | ? | ? | ? |
| Proolix | ? | ? | ? |
| USIX | 386 | 4M | 12M |
| Amoeba | 486 | 8M | 700M |
| FreeUnix | 386 | 8M | 300M |
| OpenBSD | 386 | 4M | 100M |
| SMPLinux | 386 | 4M | 55M |
| GLUnix | 486 | 8M | 500M |
| NetBSD | 386 | 4M | 40M |