Software development has a well-known reputation for being a male-dominated world. But, despite this, women have made many important and lasting contributions to programming throughout the decades. One area, in particular, where many women have left a mark is in the development of programming languages. Numerous pioneering women have designed and developed the languages programmers use to give computers instructions, starting in the days of mainframes and machine code, through assemblers and into higher level modern day languages. Use the arrows above to read the stories behind 9 programming languages that have had a significant impact over the years and the women who created them.