#14 Waterfall Model

Value in the Market - $103,000

The waterfall model is a way of designing software. This model ensures that every step or process goes according to plan and progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance.

This is a vintage model and it is also considered as a classic model for development which tracks the time and place of every stage to certify that every step takes the appropriate amount of time and therefore hassles and errors are minimized.

#13 Fortran

Value in the Market - $103,000

Fortran is a programming language designed for scientific and engineering applications. Fortran dominated this area ever since its initiation and has been doing so for over a century. It is one of the most popular programming languages in the area of high-performance computing and is the language used for programs that benchmark and ranks the world's fastest supercomputers.

Wipro and Infosys are reportedly trying to build supercomputers for the scientific community. That bit of information should give you a hint of how much this knowledge is worth.

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