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. OpenVMS :
OpenVMS is a multi-user and multi-processing operating system which was developed by Digital Equipment Corporation (DEC). It is a virtual memory based operating system which is designed for use in time-sharing, batch processing and transaction processing. It is available for many platforms including servers and workstations. It is written using BLISS, VAX Macro, C, Ada, PL/I, Fortran, UIL, Pascal, SDL, C++ and DCL. The first version of OpenVMS was launched in 1977. The kernel used in this operating system is monolithic with modules.
Difference between OpenVMS and FreeBSD :
|It was developed by Digital Equipment Corporation (DEC).||It was developed and is owned by The FreeBSD Project.|
|It was launched in 1977.||It was launched in 1993.|
|Its target system types are server and workstation.||Its target system type is server, workstation, NAS and embedded systems.|
|Computer architectures supported by OpenVMS are VAX, Alpha and IA-64.||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 native APIs are Proprietary.||The native APIs are BSD/POSIX.|
|Its package management is PCSI or VMSINSTAL.||Package management is Port collections and packages.|
|It has the preferred license of Proprietary.||Preferred license is BSD.|
|File systems supported by OpenVMS are Files-11, ISO 9660, NFS and CIFS.||File systems supported are UFS2, ZFS, ext2, ext3, FAT, ISO 9660, UDF and NFS.|
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- Difference between AIX and OpenVMS
- Difference between Windows and OpenVMS
- Difference between Linux and OpenVMS
- Difference between iOS and OpenVMS
- Difference between Windows and FreeBSD
- Difference between Linux and FreeBSD
- Difference between AIX and FreeBSD
- Difference between macOS and FreeBSD
- Difference between iOS and FreeBSD
- Difference between Chrome OS and FreeBSD
- Difference between FreeBSD and Android
- Difference between OS/2 and FreeBSD
- Difference between Solaris and FreeBSD
- Difference between User Level thread and Kernel Level thread
- Difference between Priority Inversion and Priority Inheritance
- Difference between 32-bit and 64-bit operating systems
- Difference between Multiprogramming, multitasking, multithreading and multiprocessing
- Difference between Volatile Memory and Non-Volatile Memory
- Difference between DOS and Windows
- Difference between Preemptive Priority based and Non-preemptive Priority based CPU scheduling algorithms
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