Why Do Developers Choose to Open‑Source Their Code on GitHub for Free?

Why most code cannot be sold directly

Customers for embedded Linux products do not buy a few thousand lines of code; they pay for the ability of the software to run reliably on their devices, on‑site problem resolution, and long‑term maintenance. The code itself is only a part of the deliverable.

For example, the author wrote serial‑port communication, CAN‑message parsing, socket wrappers, and a multithreaded message queue for an embedded Linux product. When kept in a private repository, only a handful of internal engineers could use it, and no buyer would purchase the raw source without guarantees.

Open source as a strategic “business card”

Publishing foundational components (e.g., an MQTT client library) makes the code publicly available, but the real value to customers lies in handling edge cases such as network disconnection, certificate expiration, limited memory (e.g., 64 MB), and obscure router configurations. Those “dirty work” tasks are where revenue is generated.

Open‑sourcing therefore serves as a reputation signal: it demonstrates that the author has solved a real problem and is willing to share the solution, which can attract users, collaborators, and commercial opportunities.

Community contributions amplify the code

A single‑developer logging component, once released, was compiled on ARM, ported to RISC‑V, stress‑tested in high‑concurrency scenarios where a deadlock was discovered, and received patches the original author had not anticipated.

This collaborative improvement mirrors the historical development of Linux, where many contributors turned a single codebase into a robust ecosystem.

Typical outcomes for ordinary open‑source projects

Most projects receive only a few stars; some receive as few as three stars, one of which may be from the author’s own account.

Issue reports often request unrelated features (e.g., Windows support, GUI additions) or demand unpaid labor.

Authors may feel tempted to delete the repository after negative experiences.

Cost and expectations for open‑source maintainers

Open‑source authors incur real costs: time spent fixing bugs, responding to issues, and maintaining compatibility across platforms. Users should acknowledge this by thanking the maintainer, reproducing problems clearly, and submitting well‑formed pull requests rather than demanding free labor.

Typical community etiquette includes avoiding vague “How do I use this?” questions that provide no context, because such questions are as unhelpful as asking an engineer to diagnose a non‑functional device without any diagnostic information.

Code versus final product

Code is an engine, not the whole vehicle. Companies often open‑source low‑level libraries, toolchains, or frameworks while keeping data, business logic, and service capabilities proprietary. The open‑source layer attracts contributors to improve the “road,” while the paid service is the delivery of a reliable, secure product.

When to open source your own work

If you have solved a reusable problem—such as a configuration‑management component, a log wrapper with automatic serial‑port reconnection, or a complex protocol parser—document the inputs, outputs, boundary conditions, and tests, and publish it as a small, reusable module. Even a modest user base (dozens of users) provides value by demonstrating competence and building a professional “entry ticket.”

Code example

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