Technologies cluster together into related ecosystems that tend to be used by the same developers. This network graph demonstrates this by showing which technologies are most highly correlated with each other. We see a large cluster on the left for web development (with JavaScript, HTML/CSS, TypeScript, and React.js) connected via SQL to one for Microsoft technologies (with C#, Visual Studio, and .NET Core). Along the lower left we see a mobile constellation connecting Java, Kotlin, Android, and SQLite to iOS and Xcode. This year we observe a cluster of operations technologies with Docker, AWS, and PostgreSQL connected to the Python ecosystem network through Linux. Other smaller correlated clusters include Scala/Spark/Hadoop, C/C++/Assembly, and smaller technologies like language-specific IDEs or frameworks.
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