HAIKU is an opensource OS that is targeted at the personal computing market. It is developed by the Haiku Project and takes its inspiration from BeOS. It's kernel is based on NewOS. Haiku recently announced release of Haiku Release 1 Alpha 4. Haiku OS is named after classical Japanese poetry form which is known elegance and simplicity. I am pretty excited about Haiku because

* Haiku looks cool and has a mature and sleek user interface.
* It offers a non Linux based opensource OS which is hard to come by.
* It supports Bash scripting.

rest here