Custom software development
Your business doesn’t fit the boxes of off-the-shelf software? We design and build the tool that matches the way you actually work. The code is fully yours: tested, documented, and ready for any team to take over after us. And if an existing product would do the job, we’ll tell you — before writing a single line.
Does any of this sound familiar?
Your quotes get lost across three inboxes. Your team types the same information into two systems that don’t talk to each other. The spreadsheet running your schedule survives on habit alone. You’ve tried off-the-shelf products: they either do far too much, or they force you to work their way.
That’s the sign you’re missing a tool built around how your company operates. Not a sprawling IT programme — a piece of software that does exactly what you need, and nothing else.
What actually changes
Custom software fits the way you work instead of bending it. Your team keeps its own words, steps and habits — in a tool that keeps up rather than getting in the way.
In practice: information entered once, not three times. Screens that show what matters to you, not forty options nobody will ever use. Repetitive tasks handled by the machine. And when your business changes, the tool changes with it — because it belongs to you.
Code built to be handed over, not to hold you back
This is the commitment we care most about. The software we deliver is yours: the source code (the text the program is made of), the documentation, the rights. Tomorrow you can hand it to your own team, to another provider, or keep working with us. That choice stays yours.
To make that possible, we hold ourselves to strict rules. Proven, widely used technologies — not the fashionable framework nobody will want to maintain in a few years. Automated tests (checks the program runs on itself) that protect every future change. Documentation written for the person who takes over next.
No vendor lock-in (nothing that traps you with one supplier). No dependence on us.
When it isn’t worth it
Let’s be blunt: in many cases, building software is a bad idea.
If an off-the-shelf product covers the core of your need, buy it. A CRM (sales-tracking software), accounting, payroll, invoicing: these areas are served by excellent products, refined over many years. Rebuilding them would cost you dearly, for a worse result.
Custom development makes sense when your need is genuinely specific: a niche trade, a sequence of steps unique to your company, existing tools that need to talk to each other. When that conversation means interpreting documents rather than applying clear rules, see Custom AI solutions. If that’s not your situation, we’ll say so in the very first conversation. You’ll leave with the name of a product to try — and the certainty that nobody sold you something you didn’t need.
How does the project unfold?
No black-box projects. We split the work into short stages, and every stage delivers a version that runs. You watch the software take shape, you try it, you adjust course with us. If a feature turns out to be useless, it comes off the plan — you don’t pay for things nobody will use.
We always start by understanding your business: who does what, with which tools, and where things jam. That groundwork is what separates software people endure from tools people adopt.
Frequently asked questions
- How long before we have something usable?
- It depends on the size of the need, and we won’t promise a timeline before we’ve scoped it. What we do promise: short stages, and a usable first version early in the project. You’ll know what to expect before you commit.
- Who looks after the software once it’s delivered?
- Whoever you choose. Your own team, another provider, or us, through ongoing support. The code is documented and tested precisely so that choice stays open.
- What if the project doesn’t deliver what I expected?
- That’s exactly what the staged approach is for: you see results regularly, and you can adjust or stop without having committed everything. And if custom software isn’t the right answer to your need, we’ll say so before starting — not after.
- What happens to my data?
- It stays yours, from the first day to the last. The software is hosted wherever you decide — in France or elsewhere in Europe if you wish. And your data can be exported in standard formats: if you leave, it leaves with you.
- Where do you work?
- From Paris, across Île-de-France and the whole of France — on site when the project calls for it, remotely otherwise. Meetings in Paris by appointment.
Read next
- How to choose an AI provider: the questions to ask before you signTwo or three AI proposals on the table and no way to tell them apart? What a serious proposal always contains, who owns the code, and the warning signs to heed.
- What funding is available for an AI project in a French SME?Research and innovation tax credits, the “Osez l’IA” plan, regional and EU schemes: what a French SME can actually mobilise to fund an AI project.
- A website that works for your businessA website that is fast, readable and built to be found — and you own everything. Based in Paris, working with companies across France.
Let’s talk about your need
A first conversation, no strings attached, to understand where things jam in your company. If an off-the-shelf tool would do, you’ll leave with its name. If not, we’ll tell you how we would approach it.
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