Is It open source?

The dooroos.RealTime is not the open source, but the most libraries running on dooroos.RealTime are opened.

Can I use it in commercial application?

Yes, dooroos.RealTime is used in commercial applications.

Is it royalty free?

No, there is licence fee.

Do I have to open the source of my application code?

No, it's your responsibility.

Can I change the kernel code?

No, the kernel sources of dooroos.RealTime is not opened.

Can I receive support on a commercial basis?

Yes, but only under pre-royalty contract.

Quantity	dooroos.RealTime License Fee
1 ~ 10,000	: 2,000 won
10,001 ~ 100,000	: 1,800 won
100,001 ~ 1,000,000	: 1,700 won
1,000,001 ~ 10,000,000	: 1,600 won
10,000,001 ~	: 1,500 won