Open Source vs Proprietary Software: What Businesses Should Know

Open source software runs much of the modern internet, from Linux servers to databases and web frameworks. At the same time, many businesses rely on commercial products for accounting, office work and specialised industries. Neither model is automatically better. The right choice depends on your needs, your team and how you manage risk.

What the terms mean

Open source software comes with a licence that lets you use, study, modify and usually redistribute the source code. Examples include Linux, PostgreSQL, Kubernetes, ERPNext and many developer tools.

Proprietary (commercial) software is owned by a company that controls the code and grants you a licence to use it, usually for a fee. Examples include many ERP, design and productivity products.

Many companies also offer open core products: a free open-source edition plus paid enterprise features or support.

Cost: free licence, not free project

Open source removes licence fees, but you still pay for:

Implementation and configuration.
Hosting and infrastructure.
Support, either from your own team or a partner.
Upgrades and security patches.

Proprietary software adds licence or subscription costs but often includes support and hosting. Compare total cost of ownership over several years rather than licence prices alone.

Support and accountability

With proprietary software, the vendor is responsible for fixes and support according to your contract. With open source, support comes from the community, from your own staff or from commercial partners who specialise in that software. For business-critical systems, make sure you have a clear support arrangement either way.

Security

Open source code can be reviewed by anyone, and popular projects fix vulnerabilities quickly. But security depends on applying updates. An unpatched open-source system is as vulnerable as an unpatched commercial one.

Proprietary vendors handle patching for their products, especially in SaaS. You depend on their transparency and speed.

In both cases, check how quickly security issues are fixed, how updates are delivered and who is responsible for applying them.

Flexibility and lock-in

Open source gives you more control: you can host it where you want, customise it and switch support partners without losing the software. Proprietary products can create vendor lock-in through data formats, integrations and licence terms. However, heavy custom changes to open-source software can create a different lock-in, to your own fork.

Licences matter

Open-source licences differ. Permissive licences (such as MIT or Apache 2.0) allow broad use, while copyleft licences (such as GPL or AGPL) require sharing changes in certain situations, for example when distributing the software or, for AGPL, offering it over a network. If you build products on open source, review licences with someone who understands them.

When open source is a strong fit

Infrastructure and developer tools: operating systems, databases, web servers, containers.
When you have technical staff or a reliable partner.
When control over data and hosting is important.
When licence costs for many users would be very high.

When proprietary is a strong fit

Specialised industry software with no mature open-source alternative.
When you want a single vendor responsible for everything.
When your team has little technical capacity.
Office and collaboration tools where ecosystem compatibility matters.

A mixed strategy is normal

Most organisations use both: open-source databases and frameworks underneath, commercial SaaS for email and office work, and either model for core business systems depending on fit.

Frequently asked questions

Is open source software reliable enough for critical systems? Yes. Major banks, governments and technology companies run critical systems on open source. Reliability comes from good architecture, monitoring, backups and support, regardless of licence.

Can we get commercial support for open-source software? Yes. Many companies, including the original developers of popular projects and local partners, sell support contracts, training and hosting for open-source software.

Do we need special skills to run open-source business software? For server-based systems such as ERP or databases, someone must handle installation, updates, backups and monitoring. That can be your own IT team, a hosting provider or an implementation partner. Many companies choose a managed hosting option so they get the benefits of open source without running servers themselves.

What happens if an open-source project is abandoned? You still have the code, so you can keep running it, but security fixes may stop. Prefer projects with active communities, regular releases and commercial backing.

Key takeaways

Open source removes licence fees but not implementation, hosting and support costs.
Security depends on patching and responsibility, not on the licence model.
Open source offers more control; proprietary offers single-vendor accountability.
Review licences carefully and plan support for business-critical systems.

KHR Digital Solutions works with both open-source platforms such as ERPNext, PostgreSQL and Linux and commercial products such as SAP and Microsoft technologies, and helps clients choose the right mix.