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Reactivex, also known as Rx, is a popular library for asynchronous programming, enabling developers to compose and manipulate streams of data. It has gained widespread adoption in the industry, making it a valuable skill for any programmer. If you are looking to enhance your knowledge and expertise in reactive programming with Reactivex, there are several online courses and certifications available that can guide you on the right path. In this article, we will explore the ten best Reactivex courses and certifications online to help you choose the most suitable platform for your learning journey.

1. Reactive Programming with Reactivex

One of the most highly recommended courses for learning Reactivex is “Reactive Programming with Reactivex” offered by Coursera. This course provides a comprehensive introduction to reactive programming concepts and practical applications using Reactivex. With an engaging mix of theory and hands-on exercises, learners can understand the power and flexibility provided by Reactivex in a real-world context. Upon completion, participants receive a certificate from Coursera, demonstrating their competence in reactive programming.

2. Learn Reactive Programming with Reactivex and Angular

If you are specifically interested in combining Reactivex with Angular, then “Learn Reactive Programming with Reactivex and Angular” on Udemy is an excellent choice. This course focuses on integrating Reactivex with Angular, enabling learners to build robust and efficient Angular applications using reactive programming principles. It covers topics such as observables, operators, and subjects, and provides practical examples and exercises to reinforce the concepts. Udemy provides a certificate of completion for this course, validating your expertise in reactive programming with Reactivex and Angular.

3. RxJava Essentials

For Java developers, “RxJava Essentials” on Pluralsight is a top-rated course that dives deep into Reactive Extensions for Java (RxJava). Taught by an experienced instructor, this course covers the fundamental concepts of reactive programming, such as observables, schedulers, and operators, with a strong focus on practical implementation using RxJava. By the end of the course, participants gain a solid understanding of RxJava and receive a certificate of completion from Pluralsight.

4. Reactive Programming with Reactivex in Python

If you prefer Python as your programming language, “Reactive Programming with Reactivex in Python” by Educative.io is an excellent option. This course walks you through the basics of reactive programming and demonstrates how Reactivex can be effectively used in Python applications. With interactive coding exercises and real-world examples, learners gain hands-on experience in reactive programming using Reactivex and Python. Educative.io provides a certificate upon successful completion of the course.

5. ReactiveX: Going Reactive with Java

“ReactiveX: Going Reactive with Java” is a comprehensive course on reactive programming using Reactivex with Java, offered by LinkedIn Learning. This course covers the principles of reactive programming, demonstrates various operators and transformation functions provided by the Reactivex library, and guides learners in building reactive applications. With a certificate of completion from LinkedIn Learning, participants can showcase their proficiency in reactive programming with Java and Reactivex.

6. Functional Reactive Programming with Reactivex

For those interested in functional reactive programming, “Functional Reactive Programming with Reactivex” on edX is a highly recommended course. This course provides an in-depth exploration of functional reactive programming (FRP) principles and shows how Reactivex can be leveraged to implement FRP in practice. Participants will gain a deep understanding of reactive systems and learn to apply FRP concepts using Reactivex. Upon completion, learners receive a verified certificate from edX.

7. Reactive Programming with Reactivex by Microsoft

Microsoft offers a comprehensive course called “Reactive Programming with Reactivex” on their official platform, Microsoft Learn. This course covers the basics of reactive programming using Reactivex and focuses on practical usage scenarios. Participants will learn how to use Reactivex to handle and manipulate asynchronous data streams effectively. Upon successful completion, learners earn a certificate from Microsoft Learn, emphasizing their competence in reactive programming with Reactivex.

8. Reactive Programming with Swift and Reactivex

Developers proficient in Swift can benefit from “Reactive Programming with Swift and Reactivex” on Udemy. This course offers a hands-on guide to reactive programming using Reactivex with Swift. It covers the core concepts of reactive programming, demonstrates practical examples, and shows how to leverage Reactivex to build reactive applications in Swift. Upon completion, participants receive a certificate of completion from Udemy, validating their skills in reactive programming with Reactivex.

9. RxJS: The Complete Guide (Angular and React)

If you are looking to combine Reactivex with popular JavaScript frameworks like Angular and React, “RxJS: The Complete Guide (Angular and React)” on Udemy is an excellent choice. This course provides an extensive hands-on guide to Reactive Extensions for JavaScript (RxJS), focusing on its integration with Angular and React. Participants will learn how to build reactive applications and effectively manage asynchronous data streams using Reactivex. A certificate of completion is awarded upon finishing the course.

10. Reactive Architecture: Intro to Reactive Programming

Lastly, for those interested in understanding the broader applications of reactive programming in software architecture, “Reactive Architecture: Intro to Reactive Programming” on Pluralsight is highly recommended. This course delves into reactive programming principles and its importance in building scalable and responsive applications. It covers topics such as event-driven architecture, reactive systems, and reactive microservices, providing a strong foundation for building reactive architectures. A certificate of completion is provided by Pluralsight.


Reactivex has emerged as a powerful tool for developers looking to build scalable and responsive applications. Investing in learning reactive programming with Reactivex can greatly enhance your programming skills and make you a valuable asset in the industry. The ten online courses and certifications mentioned in this article offer a variety of options for learners across different programming languages and frameworks. Whether you are a beginner or an experienced programmer, these courses can help you master reactive programming with Reactivex. Choose the one that aligns with your learning goals and embark on your journey towards becoming a proficient reactive programmer.