Open source is a popular word if you work in a startup company. It means that creators open part of the source code to let others create or maintain together. It could help a lot of libraries which are created by different people. Usually, after a while, they might ask permission to include some of the libraries into the next version of the package so that people don't need to search and download on many websites. The benefit is that others might be able to continue to enhance the source code as well.

Many programming languages that we used started as free open sources. For example, c, c++, java, python, etc. Those popular languages all started as open-source languages. Therefore, you might see the open-source operating system like Unix, Linux, and Android. There is open-source software like Mozilla firefox and Notepad++ which you can use for free. Recently, due to AI, google, and other medical companies or hospitals have started to provide part of open-source data so that people in the world could use their data to analyze and find out certain diseases and help humanity. 3D-printer has open-source design projects in which you could download all the designs for free and print it and help your life at home for free. W3school and Khanac Ademy are the most popular open-source education organizations which provide a free source of training and learning materials so that people who are poor could learn things as well. And, due to the COVID-19, we start to have open-source in the yuga, music, and other areas.

This year is a special year. We start to work from home. Therefore, a lot of conferences become free. A lot of tools become free. Therefore, certifications or tests could test at home right now.
Have you ever heard about the openUP summit? I have joined and helped a few times. If you are interested in knowing more about open-source areas and what the global trend is doing with. You might be interested in this kind of event as well.