Because it's:
*Free
*Reliable
*Secure
*Customizable
Apple, Microsoft, Linux?
Linux Wine is an open source software program. The Linux Wine software program allows Linux users to run Windows programs on their own devices such as computers.
Postfix in Linux is an open source software used to setup mail servers.
Neither - Linux is an operating system (software). It is used from home base systems to commercial applications and companies. The question is similar to asking the same thing about Microsoft Windows - you would have the same answer.
Linux uses Eset as a security software. It is used to protect files and email. In real time it monitors all of the files and applications on the system.
OpenOffice and LibreOffice are both full office suites used in Linux distributions.
There are several, but by far the most prominant for Linux would be LibreOffiice Calc.
The Rosegarden software for Linux is used for converting sound files into music files. It likes to use sound drivers for the MIDI. It is one of the most popular products on the market.
There are several different tax software compatible with Linux. You can use Tax Act. Is another software that people use when the Linux is not available.
Windows/Linux/Mac OS
a distribution.
Linux project management software is used to manage many aspects of a specific project, like finances, quality management, and scheduling. It is used to plan and control resources for the project.