CleverOS

(1) Light-weighted: Minimal FLASH to boot up.
(2) Minimal RAM to operate.
(3) Only one parameter required to boost.
(4) Extremely easy to learn and implement
(5) Non-blocking and real-time task communications
(6) Accurate stack size calculation
(7) Automatic stack security check
(8) No memory leak
(9) Extremely efficient low power mode