Haiku is a Real-Time open source Operating System (RTOS) under constant development. 

Specifically targeting personal computing, Haiku is a fast, efficient, simple to use, easy to learn, and yet very powerful system for computer users of all levels. 

The key highlights that distinguish Haiku from other operating systems include:

• Specific focus on personal computing
• Custom kernel designed for responsiveness
• Fully threaded design for great efficiency with multi-processor/core CPUs
• Rich object-oriented API for faster development
• Database-like file system (BFS) with support for indexed metadata
• Unified, cohesive interface

Available on USB flash drive (4 GB MBR) for 64 bit (default choice) or 32 bit architecture

Please, after purchasing, send me a message with your preference about the architecture 32 / 64 bit.