while hp, ibm and others chose system v as the basis for their unix offerings, other vendors such as sun microsystems and dec extended bsd. throughout its development, though, system v was infused with features from bsd, while bsd variants such as dec's ultrix received system v features. at&t and sun microsystems worked together to merge system v with bsd-based sunos to produce solaris, one of the primary system v descendants still in use today. since the early 1990s, due to standardization efforts such as posix and the commercial success of linux, the division between system v and bsd has become less important.