JFS is invented by IBM, but licenced under the GPL for open source distribution. JFS is a journaling file system. It also has some interesting additional features intended for servers, such as concurrent I/O for more efficient database implementation.
JFS beats XFS in terms of many performance matrix, although it “only” supports up to 32PB of total volume size. One EB has 1000 PB, and each PB has 1000TB. This means that practically, JFS is capable enough for practically all servers.