The concept of open-source software may seem almost unbelievable at first glance. Millions, if not billions, of lines of code powering incredible systems are available to anyone for free—how can this be sustainable? And yet, it’s true. From the moment I write this article to the moment you read it, a vast network of open-source software is at work behind the scenes, all without any direct financial exchange for its use. This ecosystem has been a game-changer in how we think about software development and access.
Linux is perhaps the most iconic example of open-source software’s success. I remember the early days of Linux in the 1990s when it was a modest alternative to Unix. By 2015, Linux had become the dominant operating system driving the internet. It’s hard to imagine the modern internet without Linux, as it runs everything from servers to cloud infrastructure. The success of Linux proved that open-source software could not only compete with proprietary systems but could revolutionize the way we think about technology and accessibility.
Linux’s success inspired a wave of other open-source projects, from major infrastructure systems to smaller tools that power applications behind the scenes. The GNU General Public License (GPL) was the first widely used open-source license, and its “copyleft” requirement ensured that any software derived from GPL-licensed code had to be made open as well. Over time, more permissive licenses emerged, making open-source software even more accessible and commonplace, and cementing the idea that software could be shared and improved upon collaboratively.
However, as with any business model, there are costs involved. While open-source software is free to use, it still requires time and resources to develop and maintain. Developers contribute their skills and knowledge, often without direct financial compensation. In the early days, it was believed that companies could provide open-source software for free while charging for expert support and services. Red Hat was one of the few companies to make this model work, but it’s clear that finding a sustainable business model for open-source projects remains a challenge. The rise of Software as a Service (SaaS) added another twist, as companies began offering managed services built on open-source software, turning free tools into profitable services. Amazon’s use of open-source projects like Elasticsearch and Redis to build managed services on AWS highlights the tension between the “makers” who create the software and the “takers” who monetize it. This growing conflict has led some projects to change their licenses, and it’s likely that more will follow suit as the open-source landscape continues to evolve.