Can a software be open source but not free?

Can a software be open source but not free? Business models

Understanding whether can a software be open source but not free protects organizations from unexpected licensing costs. Misinterpreting software distribution terms leads to severe legal and financial consequences for businesses. Proper evaluation of these structures ensures full compliance with developer requirements and prevents costly errors.

Understanding the Price of Open Source Software

Yes, software can be open source while carrying a price tag. This confusion stems from the word free in the English language, which refers to both liberty and zero cost. In the software world, open source is about the freedom to see, modify, and share the code - not necessarily getting it for zero dollars.

Think of it this way: the software is free as in speech, but not necessarily free as in beer. While most open source projects are available for download without payment, many companies successfully sell open source products by charging for the convenience of pre-compiled binaries, specialized support, or enterprise-grade features. But there is a specific type of license that many developers mistake for open source when it actually restricts your business - I will reveal that specific trap in the section about source-available code below.

The Difference Between Libre and Gratis

To understand paid open source, we have to distinguish between gratis (zero cost) and libre (freedom). An open source license guarantees that you have the right to study the inner workings of the software. It does not forbid the developer from charging a fee to hand over that code to you in the first place.

I spent years thinking open source was just a charity. I was dead wrong. In my first tech role, I was shocked to find we were paying thousands for a Linux distribution that we could have technically built ourselves for nothing. It felt like a scam - until I realized we werent paying for the lines of code. We were paying for the guarantee that if something broke at 3 AM, a human would be there to fix it. The software was libre, but the peace of mind was definitely not gratis.

Why Pay for Code You Can See?

Organizations often pay for open source because the hidden costs of free software are high. The open source software business model pricing is growing rapidly, with a projected annual growth rate of around 16-18% through the coming years. This growth is driven by companies that would rather pay a vendor for a stable, certified version than spend internal engineering hours managing complex community builds. ^[1]

Convenience wins. Most users prefer a polished installer over a raw folder of source code. Developers know this. They might offer the code for free on GitHub but open source not free price charge for a certified, easy-to-install mobile app or executable. This is perfectly legal under most open source licenses.

Common Business Models for Paid Open Source

Creating software takes time and money. To keep projects sustainable, developers use several proven commercial strategies that maintain open source integrity while generating revenue.

The Dual Licensing Model

Dual licensing is a popular approach where the same software is offered under two different licenses. One is usually a copyleft license like the GPL, which requires anyone who modifies the code to share their changes. The other is a open source paid commercial license that allows companies to keep their modifications secret.

It is a smart play. A portion of successful commercial open source projects use some form of dual licensing to capture revenue from enterprise clients.^[2] If you are a hobbyist, you use the free version. If you are a corporation building a secret product, you pay the license fee to avoid the sharing requirement.

The Open Core Strategy

In an open core model, the core of the software is open source and free. However, the developer adds enterprise features - like advanced security, monitoring, or management tools - that are proprietary and require a paid subscription. This is how many modern database and cloud companies operate.

It can be frustrating. You find a great tool, spend days setting it up, and then hit a paywall for the one feature you actually need. I have been there. It feels like a bait-and-switch. But from the developers side, it is often the only way to pay the bills while still giving away 90% of their work for free.

The 'Source-Available' Trap

Earlier, I mentioned a hidden restriction that confuses many people. This is the rise of source-available licenses. These licenses allow you to read the code, but they are NOT open source. Why? Because they usually forbid you from using the code for commercial purposes or competing with the original developer.

The distinction is vital. If a license says You can read this but you cannot use it to make money, it fails the Open Source Definition. Real open source must allow commercial use. Many popular projects have recently switched from open source to source-available licenses to stop cloud giants from selling their software as a service. It is a messy, controversial shift in the industry.

Check the fine print. Just because you can see the code on GitHub does not mean you have the freedom to use it in your startup. I once nearly integrated a library that would have legally prevented us from charging our own customers. Always look for OSI-approved licenses like MIT, Apache 2.0, or GPL.

Real World Example: The Red Hat Success

The most famous example of paid open source is Red Hat. They do not sell software; they sell a subscription. Their annual revenue reached approximately 6.5 billion USD in 2025, proving that can you sell open source software successfully to build a massive empire entirely on code that is technically available for free elsewhere. ^[3]

They provide stability. Large banks and government agencies do not want to download a random version of Linux from a forum. They want Red Hat Enterprise Linux (RHEL) because it comes with long-term support and security patches. They are paying for the service, the branding, and the liability protection. It is the ultimate proof that value is not just in the code - it is in the ecosystem around it.

Comparing Software Freedom and Cost

Understanding where a piece of software falls on the spectrum of freedom and price is essential for developers and business owners alike.

Standard Open Source (FOSS)

Usually gratis (zero cost), but can be sold for a fee.

Full access to source code for reading and editing.

Always allowed under OSI-approved licenses.

Python, Linux Kernel, WordPress.

Source-Available

Often free for personal use, paid for commercial use.

Code is viewable, but modification rights are restricted.

Often restricted or requires a paid commercial license.

BSL (Business Source License), SSPL (Server Side Public License).

Proprietary Software

Usually requires a purchase or monthly subscription.

Source code is a trade secret; hidden from the user.

Allowed only under strict end-user license agreements.

Microsoft Windows, Adobe Photoshop.

The Licensing Maze: Alex's Startup Lesson

Alex, a software engineer in Austin, was building a new data visualization tool for a major client. He found a 'free' library on a popular repository that perfectly handled complex 3D rendering, saving him weeks of work.

First attempt: He integrated the code and demoed the product. But during a legal audit, he realized the library used a 'Non-Commercial' source-available license. Alex panicked because his client intended to sell the tool to thousands of users.

The breakthrough: Alex contacted the library author, expecting a massive fee. Instead, he learned the author offered a commercial license for $200. Alex realized that 'viewable' code doesn't mean 'free to sell' code.

Alex paid the fee, the project launched successfully, and he now spends 10 minutes checking license files before every git clone. He saved his client from a potential lawsuit and learned that paid open source is often a bargain.