DOS batch file mode for Emacs
dosbat is a major mode for editing DOS batch files in Emacs. dosbat performs syntax highlighting and will add features common

Text Editors::Emacs
Text Editors::Integrated Development Environments (IDE)

DOS-EX
DOS-EX is dead

Terminals

PaulOS: The Real Thing
PaulOS:The Real Thing is a dos Shell program (like Windows). It is intended for use with FreeDOS, although it should work

System::System Shells

DosUnix
A suite of three programs: dosunix: converts DOS text files to Unix text files; unixdos: converts Unix text files to DOS

System::Systems Administration

JANOS
is a pure java os that uses Java Virtual CPU(JVC). It dosen`t use JVM. JVC is a CPU wrapper which can execute Java instruction

System::Operating System Kernels

PC-TEST - Hardware detecting and testing
PC-TEST is a hardware detecting & testing tool (detection, benchmark, stress-test, S.M.A.R.T., etc.). It is developed to

System::Hardware