client and graphical web browser Arachne. It provides you with dial-up, web browsing, e-mail sending and reading and more.

PTS-DOS is certified by Russian Ministry of Defence.

Some reasons to use PTS-DOS

less memory usage in comparison with any other DOS;
internal boot-viruses protection;
more disk space with powerful compression utility FOLDER;
improved syntax of the configuration file and extended configuration commands set;
possibility of a selective modification of the configuration file using a menu or data stored in CMOS or ROM;
possibility to execute configuration file commands step-by-step;
flexible strategy of allocating system data and code;
possibility to open 65,535 files simultaniously;
selective file access system built into the core;
non-standard disk formats support;
extended system calls set;
possibility of improving performance of an AT-type computer by five to ten per cent.
full-functional Internet pack including web browser, e-mail client, telnet, ftp client.

Hardware requirements
To install and use PTS-DOS you need a PC with the following minimum hardware requirements: