Substantial amounts of open-source code can be found in artificial intelligence frameworks, databases, web browsers and mobile operating systems. Some of the best known open-source projects include Android (now owned by Google), GitHub (acquired by Microsoft) and Apache Spark, data analytics technology at the heart of Databricks.
While many companies have been able to commercialize versions of open-source software or sell support and services as a way to generate revenue, there's no consistent model for rewarding individuals or small groups of contributors who often do valuable work.