In general, open source refers to any program whose source code is made available for use or modification as users or other developers see fit. Open Source Development is usually developed as a public collaboration and made freely available.This list includes version control systems, integrated development environments (IDEs), text editors, and Web and mobile frameworks.
Following is this list of open source tools for developers.
1. Git
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Git users include all the biggest names in the technology industry, such as Google, Facebook, Twitter, Microsoft, LinkedIn and Netflix.
2. Eclipse
Eclipse is a well known integrated development environment (IDE) used in computer programming. It is the most widely used Java IDE, but it also supports C/C++, PHP and JavaScript. It got started in 2001 when IBM donated three million lines of code from its Java tools to develop an open source integrated development environment.
3. Apache HttpClient network stack
Apache HttpClient implements the custom connection between the app and the service back-end, Apache’s HttpClient provides a capable HTTP connectivity framework that can be used for this purpose.They often use a custom network stack for this because a browser-based connection would be slow, consume too many resources and provide an attack surface for malicious code.
4. Node.js
Node.js is a famous JavaScript runtime built on Chrome’s VB JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. A developer can write server side applications. In recent years, Node.js has skyrocketed in popularity and its users include IBM, Microsoft, LinkedIn, Netflix, PayPal, Yahoo, Walmart and many other well-known Web companies.
5. Cordova
Cordova is Sponsored by the Apache Foundation, it allows mobile developers to write for iOS, Android, Windows and other platforms using Web development technologies like HTML, CSS and JavaScript. Many other mobile development frameworks, most notably PhoneGap, are based on the Cordova code base.
6. Emacs
Emacs is a combination of text editors that is characterised by its extensibility. The manual for the most widely used variant, GNU Emacs, describes it as the extensible, customisable, self-documenting, real-time display editor.
Conclusion
These all tools are helpful for developers, these tools make work easier and web developers are using these tools and many more for there projects.