1. FreeBSD :
FreeBSD is a free and open source
operating system which is provided The FreeBSD Project. It was designed on the basis of the two Unix-like operating systems Berkeley Software Distribution (BSD) and Research Unix. It has quite similarities with
Linux operating system. It was one of the famous operating systems earlier but now it is less used as compared to other operating systems. The first version of FreeBSD was launched in 1993. The latest stable version of FreeBSD is 12.1.
2. Solaris :
Solaris is a proprietary operating system which is provided by Oracle Corporation. It is an Unix-like operating system. It is written in
C language and C++. It has a mixed source model i.e open and close source both. It was originally developed by Sun Microsystems which was acquired by Oracle Corporation in 2010. The first version of Solaris was launched in 1992. The kernel used in this operating system is Monolithic with dynamically loadable modules.
Difference between Solaris and FreeBSD :
