Is Spotify an open source software?

is spotify open source: App vs infrastructure split

Understanding is spotify open source requires looking beyond the music player interface into the development philosophy of large tech firms. Users frequently mistake internal engineering contributions for the status of the entire application. Knowing the difference protects developers from assuming full code access and highlights valuable public contributions in these software licensing choices.

Is Spotify open source software?

No, the main Spotify application is not open source. The desktop, mobile, and web versions of Spotify are proprietary software, meaning their source code is private and owned exclusively by the company. While you can download and use the app for free, you do not have the legal right to view, modify, or redistribute the underlying code that makes the music play.

This can be confusing because the company is actually a major player in the open-source world. They maintain over 100 active open-source projects on platforms like GitHub, but the secret sauce - the algorithms that suggest your next favorite song and the actual interface you interact with - remains under lock and key. But there is one massive software project that practically runs the internal workings of companies like Netflix and American Airlines, and it came directly from Spotify - I will reveal how this secret project changed the entire industry in the section on developer tools below.

Understanding the proprietary nature of the Spotify client

The reason the Spotify app is closed-source comes down to business protection and licensing. The music industry relies on strict Digital Rights Management (DRM) to ensure that artists and labels are paid. If the Spotify client were open source, it would be significantly easier for people to bypass these protections or create ad-blocking versions of the software, which would violate their contracts with record labels.

In my experience as a developer, I once spent a whole weekend trying to find a way to reskin the desktop app to a custom purple theme. I thought since it used web technologies, I could just dig into the files. I was wrong.

The core of the application is heavily protected, and my attempt ended with a corrupted installation and a hard lesson: Spotify is a black box. Numerous different open-source libraries and components live inside that box to help it run, ^[3] but the lid is bolted shut. This proprietary approach allows them to maintain a consistent user experience and protect the sophisticated recommendation engines that keep users engaged.

What is inside the Spotify black box?

Even though the main app is closed, it is built using several open-source frameworks. The desktop application, for instance, relies heavily on the Chromium Embedded Framework (CEF). This is essentially a way to run a web browser inside a dedicated window. It is why the Spotify UI feels so much like a website - because, in many ways, it is one. By using CEF, they can update the look and feel of the app across Windows, Mac, and Linux without rewriting the code for every single operating system.

Spotify's massive impact on the open source community

While they keep their consumer app private, the backend story is completely different. Spotifys engineering culture is deeply rooted in giving back to the community. They realized early on that the tools they built to manage thousands of microservices and petabytes of data could be useful to others. This is not just a hobby for them; it is a core part of their recruitment and engineering strategy.

Currently, the company manages a portfolio of more than 100 open-source repositories. ^[1] These projects are not small side-tasks. They are foundational tools used by high-traffic websites globally. By open-sourcing their internal infrastructure, they allow the global community to find bugs and suggest improvements, which ultimately makes their own systems more stable. It is a win-win, even if the user-facing app remains proprietary. Lets be honest, most of us will never need to touch their data-processing libraries, but for the engineers keeping the internet running, these contributions are vital.

The secret project: Backstage

Here is the resolution to the secret project I mentioned earlier: it is called Backstage. Originally an internal portal for Spotifys 5,000 engineers to manage their software ecosystem, it was open-sourced several years ago. Today, more than 2,000 companies - including massive names like American Airlines and Expedia - use Backstage to build their own internal developer portals. ^[2] It has become the industry standard for reducing developer cognitive load.

I remember the first time I tried setting up a developer portal at a previous startup. It was a nightmare of spreadsheets and broken links. When we finally switched to the open-source version of Backstage, it was like someone had finally turned the lights on in a dark room. This project alone has probably saved millions of engineering hours worldwide. It is a perfect example of how a proprietary company can still be an open-source powerhouse.

Open source alternatives to the official Spotify app

If you are a purist who only wants to use open-source software, the official Spotify app will never satisfy you. However, because the company provides APIs (Application Programming Interfaces), developers have built alternative clients. These apps allow you to log in with your account but use a completely open-source codebase.

One of the most popular is called spotifyd. It is a background daemon that makes your computer appear as a Spotify Connect device. It is written in Rust, which makes it incredibly lightweight. While it does not have the flashy interface of the official app, it uses significantly less RAM and CPU. For many Linux enthusiasts, this is the true way to experience the service without the proprietary overhead. Just remember that these third-party tools still rely on the backend, which is very much controlled by the company.

Spotify App vs. Spotify Open Source Projects

Official Spotify Client

• Proprietary (Closed Source)
• Music and Podcast consumption for general users
• None - Users cannot change the source code
• High - Required to protect music rights holders

Spotify Open Source (e.g., Backstage)

• Apache 2.0 or MIT (Open Source)
• Internal tools for developers and engineers
• High - Anyone can contribute or fork the code
• None - These are infrastructure tools, not content players

The struggle of building a custom player

Minh, a software engineering student in Ho Chi Minh City, wanted to build a minimalist music player for his old laptop. He assumed he could just copy the Spotify client's source code and trim the fat, only to realize the code was completely inaccessible.

He spent days searching for a GitHub repo that didn't exist. He tried 'inspecting' the app components but found everything was encrypted or obfuscated. His laptop struggled to run the official app, and he felt stuck.

Then, he discovered the Spotify Web API and a project called Librespot. He realized he didn't need the official source code; he just needed a way to talk to their servers. The breakthrough came when he stopped fighting the proprietary wall and started using the open tools they actually provided.

After three weeks of coding, Minh finished a custom player that used 85 percent less memory than the original. He learned that while the app is closed, the 'gateway' to its data is open for those who know where to look.