Custom software or off-the-shelf: what suits your business?

Which is better: custom software or off-the-shelf?

Off-the-shelf software is better if your process does not differ from what many businesses do, such as bookkeeping, email or a simple CRM. Custom software is better if the package forces you to organise your work around it, if you tie several systems together by hand or if you want to offer customers something that does not exist yet. If in doubt, start with off-the-shelf software: that teaches you what you really need.

What is the difference between custom and off-the-shelf software?

The biggest differences between custom and off-the-shelf software are the start-up cost, the speed and who decides how the software develops. The prices below are examples from the pricing pages on 7 November 2026.

When should you choose off-the-shelf software?

Choose off-the-shelf software if there is a package that does eighty percent of what you need and the rest does not get in the way. That almost always applies to bookkeeping, payroll, email and calendar. Those processes are roughly the same everywhere and the vendor keeps them up to date when the law changes. Building something for them is rarely sensible.

Not sure whether your problem calls for custom software? Describe your bottleneck →

When should you choose custom software?

Choose custom software if your team retypes data between systems every day, if you plug gaps in a package with Excel or if the way you work is precisely your advantage. You will not find a customer portal, an internal tool for your own process or an assistant on your own documents ready-made. Custom software has a bad name because it often starts too big. That is why I start with one phase that solves one problem.

Is there an option between custom and off-the-shelf software?

Yes, the best answer is often a package with an integration or a low-code platform. You keep your off-the-shelf software and automate only the part between the systems. At Equote, an automation in n8n pulls data from incoming emails and puts it into a Google Sheet. That is not a new application but an integration between existing tools. A low-code platform such as Retool starts at €9 per builder per month billed annually, plus €5 per internal user.

What are the risks of custom software?

The three biggest risks of custom software are a project that starts too big, software nobody maintains any more and dependence on one builder. You solve the first with phases, the second with an agreement on maintenance. The third calls for clear agreements up front on documentation and source code. My article on source code goes into that further.

How do you choose between custom and off-the-shelf software?

You choose between custom and off-the-shelf software by asking yourself five questions. Does a package do at least eighty percent of what you need? Is your process the same as at other businesses? Is it work that does not set you apart? Are few integrations needed? Is the problem too small to earn back a build fee? Four or five yeses means off-the-shelf software. Two or three yeses means a package with an integration. Fewer than that means custom software is worth working out.

The short version

Off-the-shelf software for what is the same everywhere, custom software for what sets you apart and an integration for everything in between. If in doubt, start with a package and only build once you know exactly where it pinches.

Not sure whether your problem calls for custom software?