[3] Since the 1980s, the chief rival to VRTX has been VxWorks, a Wind River Systems product.
Later, Wind River created their own real-time kernel offering similar to VRTX.
VRTX comes in several flavors: Most companies developing software with VRTX use reduced instruction set computer (RISC) microprocessors including ARM, MIPS, PowerPC, or others.
VRTX runs the Wide Area Augmentation System.
It runs on several hardware platforms including LTE (Motorola V300, V500, V600, E398, RAZR V3 and others featuring the ARM7 processor), LTE2 (Motorola L7 and upcoming devices with 176x220 screen resolution), Rainbow POG (3G phones featuring an MCORE processor from Motorola E1000 to RAZR V3x), Argon (all new 3G phones with 532 MHz ARM11 processor since Motorola RAZR MAXX V6, and V3xx), and others.