Difference between OS/2 and FreeBSD

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. OS/2 :
OS/2 is a series of operating system which was developed by co-ordination of Microsoft Incorporation and IBM. Its target systems are personal computers and servers. It is written using C, C++ and assembly language. The first version of OS/2 was launched in 1987. It was discontinued in 2006 and after that it was being updated, maintained and marketed under the name eComStation. In 2015 it was named ArcaOS. The kernel used in this operating system is Monolithic with modules.

Difference between OS/2 and FreeBSD :

OS/2	FreeBSD
It was developed by co-ordination of Microsoft Inc. and IBM.	It was developed and is owned by The FreeBSD Project.
It was launched in 1987.	It was launched in 1993.
Its target system types are personal computers and servers.	Its target system type is server, workstation, NAS and embedded systems.
Computer architectures supported by OS/2 are 16-bit x86 (1.x only) and IA-32.	Computer architectures supported are IA-32, x86-64, ARM, MIPS and PowerPC.
Its kernel type is Monolithic with modules.	Kernel type is also Monolithic with modules.
Its package management is Feature Install.	Package management is Port collections and packages.
Its native APIs are Proprietary, DOS API and Win16.	The native APIs are BSD/POSIX.
It has the preferred license of Proprietary.	Preferred license is BSD.
File systems supported by OS/2 are HPFS, JFS, FAT, ISO 9660, UDF and NFS.	File systems supported are UFS2, ZFS, ext2, ext3, FAT, ISO 9660, UDF and NFS.