If you could give 10 years of development time to up to 10 software projects, which would you choose?

• You can choose up to 10 software projects.
• Each project receives 10 years of development time as if all the programmers worked continuously for that duration, following their current working methods.
• After choosing these 10 (or less) projects, everything else remains unchanged in the world, as if time has been frozen for 10 years.

Which projects do you choose?