.SYS

.SYS file extension

This is the basic program to work with .SYS extension

Notepad++

Notepad++ Notepad++ Document

Notepad++ is a free (as in “free speech” and also as in “free beer”) source code editor and Notepad replacement that supports several languages. Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size... (more)

The program works with the following extensions: js, sys, htm, ini, log, nfo, xml, css, dat, php, html, c, m, h, as, cs, fx, sh, me, mx, py, nt, rc, vb, pl, tex, vbs, unk, lzx, asc, gcm, cpp, ses, nsi, jsp, f90, cxx, cmd, f95, mfp, hpp, hxx, inc, scp, bsh, inl, wtx, bas, nsh, mak, diz, for, ctp, cfg, sql, pas, java, conf, phtml, readme, htaccess and xevgenxml