10 core open source projects every developer should be familiar with

1. Git

An open source distributed version control system, which makes tracking and merging code changes much easier.

2. Apache Spark

An open source cluster computing framework that enables faster data processing and analytics.

3. React Native

An open source JavaScript framework for cross-platform mobile application development.

4. Node.js

An open source, JavaScript-based server-side runtime environment.

5. Vue.js

An open source progressive JavaScript framework for building user interfaces.

6. TypeScript

An open source superset of JavaScript that adds optional static typing.

7. Swift

The Swift programming language.

8. Bootstrap

An open source toolkit for developing with HTML, CSS, and JS.

9. TensorFlow

An open-source machine learning framework developed by Google.

10. Elasticsearch

An open source, distributed, real-time search and analytics engine for the web.