.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, pl, as, cs, fx, sh, me, mx, nt, rc, py, vb, ctp, sql, pas, cfg, vbs, unk, tex, lzx, asc, cpp, gcm, ses, nsi, cxx, jsp, f90, cmd, f95, hpp, mfp, hxx, inc, bsh, inl, scp, wtx, nsh, mak, bas, for, diz, conf, java, phtml, readme, htaccess and xevgenxml