Unix is a multi tasking, multi user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs. During the late 1970s and early 1980s, the influence of Unix in academic circles led to large-scale adoption of Unix by commercial startups, the most notable of which are Solaris, HP-UX and AIX. In addition to those already mentioned, Unix-like operating systems such as MINIX, Linux and BSD descendants (FreeBSD, NetBSD, OpenBSD and DragonFly BSD) are commonly encountered. Unix operating systems are widely used in servers, workstations, and mobile devices.