Types of Software: Open Source vs. Proprietary Explained

Imagine you buy a car. With one car, you get the keys and an owner’s manual, but the hood is welded shut. You can drive it, but you can’t see the engine or get it fixed by anyone except the original manufacturer. That’s like proprietary software. Then, there’s another car. It comes with the keys, the full engine blueprints, a complete set of tools, and an invitation to a club of fellow owners who all help each other with repairs and upgrades. That’s open source software. But what about a third car? The manufacturer lets you drive it for free, as much as you want, but the hood is still welded shut. This is freeware. In the digital world, the software we use every day falls into these same broad categories, and understanding the difference is key to knowing what you’re really getting.

Proprietary software: The sealed black box 🔗

At its core, proprietary software, also known as closed source software, is just what it sounds like: it’s the private property of an individual or a company. Think of it as a secret recipe. A company like Microsoft or Adobe invests millions of dollars to develop a program like Windows 11 or Adobe Photoshop. That program’s underlying “recipe,” the human-readable source code, is a closely guarded trade secret.

When you “buy” a copy of Microsoft Office, you aren’t actually buying the software itself. Instead, you’re purchasing a license to use it. This license, often called an End User License Agreement (EULA), is a legal contract that outlines what you can and cannot do. Can you install it on one computer? Yes. Can you install it on three? Maybe, if the license allows it. Can you make a copy and give it to a friend? Absolutely not. Can you look at the source code, fix a bug, or add a feature you wish it had? Definitely not.

What you receive is a compiled, machine-readable binary file. This is the version of the software that your computer understands and can run, but it’s completely unreadable to a human. This is a technical barrier, combined with the legal barriers of copyright and trade secrets, that keeps the software locked down. The company that owns it has exclusive control over its development, distribution, and updates.

The pros and cons of the proprietary path 🔗

This model isn’t popular by accident. It has significant advantages, especially for businesses and non-technical users.

• Support: When you pay for proprietary software, you are also often paying for a support system. If Windows crashes, you can call Microsoft. If a feature in Photoshop doesn’t work, Adobe has a customer service team. There is a single, clear entity responsible for fixing bugs.
• User experience: Because these products are funded by direct sales, companies invest heavily in user-friendly interfaces, extensive documentation, and a polished, consistent experience. They are built for a mass market and are often “just work” out of the box.
• Integration: Companies that build a “suite” of products (like Microsoft 365 or Adobe Creative Cloud) ensure they work together seamlessly.

However, this convenience comes with trade-offs:

• Cost: Proprietary software often involves a significant upfront cost or, increasingly, an ongoing subscription fee.
• Vendor lock-in: If your entire company runs on a specific proprietary system, it can be incredibly difficult and expensive to switch to a competitor. You are locked into their ecosystem, their pricing, and their update schedule.
• Lack of customization: You cannot change the software. If you dislike a new feature or wish for a different one, your only option is to submit a request and hope the company agrees. You can’t tailor the tool to your exact needs.

Examples of proprietary software are everywhere: Microsoft Windows, Apple’s macOS, the Adobe Creative Cloud suite, and AutoCAD are all classic examples.

Open source software: The community cookbook 🔗

Open Source Software (OSS) is the complete opposite. It’s not about secrecy; it’s about sharing. The fundamental idea of OSS is that the source code is made available to everyone at no cost. It’s the community cookbook, where everyone can not only use the recipes but also tweak them, improve them, and share their new versions with the community.

The term “open source” isn’t just a casual description; it’s a formal definition maintained by the Open Source Initiative (OSI). To be officially called “open source,” a software’s license must grant a set of ten specific freedoms. These include the freedom to redistribute the software, access to the source code, and the right to modify the code and distribute those modifications. This is the fundamental difference: OSS provides both the source code and the binary code (the runnable program).

The power of ‘free’ as in freedom 🔗

This is the most important concept to grasp about open source. When people hear “free software,” they often think of “free” as in “free beer” (gratis). Open source is “free” as in “free speech” (libre). While most OSS is also available at no cost, the real power comes from the freedom it gives you.

• You can see the code. This transparency is a huge deal. It allows a global community of developers and security experts to audit the code for vulnerabilities, making many open source projects, like Linux, famously secure. You don’t have to trust that a black box is safe; you can look inside and check.
• You can change the code. If you find a bug, you can fix it yourself. You don’t have to wait for the original company. If you need a special feature for your business, you can hire a developer (or do it yourself) to add it. This power of customization is why OSS is the backbone of the internet, research, and enterprise computing.
• You can share the code. You are free to take an open source program, modify it, and even redistribute your new version (usually under the same open source license). This collaborative model is how projects like the Linux operating system and the Apache web server grew to power the majority of the world’s servers.

Other famous examples include the Mozilla Firefox web browser, the WordPress content management system (which powers over 40% of the web), and the Android mobile operating system (which is built on an open source core).

So, how does anyone make money? 🔗

If the software is given away, how do companies like Red Hat (an IBM company) or Automattic (the company behind WordPress.com) become billion-dollar businesses? They don’t sell the software; they sell services around the software.

• Support and services: A large corporation will use the open source Red Hat Enterprise Linux for free, but they will pay Red Hat millions for 24/7 premium support, guaranteed security patches, and expert consultation.
• Hosting and ‘freemium’ models: You can download WordPress (OSS) for free and build a site, but it’s complicated. Automattic offers WordPress.com, a service that hosts and manages it all for you for a simple monthly fee.
• Open core: Many companies offer a “core” version of their product as OSS, but sell proprietary “enterprise” add-ons with advanced features.

Freeware: The ‘free sample’ of the software world 🔗

This brings us to our third category, which is often the most confusing. What about programs like Google Chrome, Skype, or Adobe Acrobat Reader? They are free to download and use, but you definitely don’t get the source code. This is freeware.

Think of freeware as a “free sample” in a supermarket. You can have it, you can eat it, but you don’t get the recipe and you can’t start selling it yourself. Freeware makes the binary code available at no cost, but it is still proprietary, closed source software. You have no right to customize, modify, or even inspect the source code. Unlike open source software, freeware does not give you any freedom; it only gives you the product for free (gratis).

The business model behind ‘free’ 🔗

Why would a company give away its product? The business models vary, but it’s never truly “free.”

• Freemium: This is the most common model. The basic version is free (e.g., Spotify with ads, or a PDF reader), but you are constantly encouraged to upgrade to a “Pro” or “Premium” version to unlock advanced features (like editing PDFs or removing ads).
• Ecosystem building: Google gives away the Chrome browser for free because it ensures you use the Google search engine, which is where they make their money from advertising. Apple gives away its iWork suite (Pages, Numbers) to make its macOS and iOS hardware more attractive.
• Market share: Adobe gives away Acrobat Reader to establish its PDF format as the global standard, which in turn drives sales of its powerful (and expensive) Acrobat Pro creation software.

So, freeware is a marketing strategy for a proprietary product. Open source is a development philosophy centered on freedom and collaboration.

Choosing the right tool for the job 🔗

There is no “best” model. The right choice depends entirely on your needs. Proprietary software is often the best fit for a casual home user or a business that needs a highly polished, all-in-one solution with guaranteed support. They are paying for convenience and peace of mind.

Open source software is the clear choice for developers, startups, and large enterprises who want to avoid vendor lock-in, value transparency, and need the power to customize their tools to fit their exact processes. It is the engine of innovation.

And freeware is the perfect solution for a specific, simple task. When you just need to video chat with a relative or open a PDF document, a free, no-fuss tool is exactly what you need, as long as you understand what (if anything) you’re giving up in exchange.

What do you think? As more and more critical services (from banking to government) run on software, do you believe the transparency of open source is a necessity? Or is the dedicated support and polish of proprietary models more important for everyday users?

References

1. https://en.wikipedia.org/wiki/Proprietary_software
2. https://opensource.org/osd
3. https://builtin.com/software-engineering-perspectives/freeware
4. https://www.geeksforgeeks.org/software-engineering/difference-between-open-source-software-and-proprietary-software/