Automate your business
Your teams spend time on tasks the system could take care of.
- Remove repetitive tasks
- Connect tools that do not talk to each other
- Automate a workflow or a back office
- Add AI where it produces a result

Custom software, from Nice
TerangaStack builds the business software and automations that replace scattered spreadsheets and manual re-entry, connect the tools you already use and evolve with your business. We also build platforms for your customers. From Nice, in French and English.
Describe my projectSTARTING POINT
WHERE TO START
Most projects start from one of these two situations. Pick the one that looks most like yours.
Your teams spend time on tasks the system could take care of.
You have a service, an idea or a customer need to turn into usable software.
Both paths rely on the same technical foundation and the same process. Many projects combine the two.
OUR SERVICES
An online tool that fits your customers, your teams and the way you work.
Simple interfaces to reach your services on desktop and phone.
Connect your tools and automate the repetitive tasks in your business.
Put your tool online and keep it running day to day.
Decide who can access what, and build data protection in from the design stage.
WHAT WE BELIEVE
Open source, no-code and AI have changed the way software is made. A first version can now be up and running in a few weeks. We use these tools in our own projects.
It’s the decisions that take time and experience. What is worth automating and what should stay human. Who needs to see what. Where the data lives. How teams will use the tool day to day. Who monitors the tool and evolves it when the business changes.
That is where we spend most of our time. A tool your business relies on every day is judged six months after it goes live.
OUR OFFERS
Know what to build, get a usable tool, then keep it evolving over time. A first version is there to get you started. Real use shows what to improve next. Amounts shown exclude VAT.
Get clear on your need, set the priorities and decide the best approach before building.
From €2,500 excl. VAT
The price depends on the scope and the complexity of the project.
Design and build a first usable version of your software.
Custom quote
The price depends on the scope, the complexity and how far along the project already is.
Run and evolve your software once it is in production, or take over a tool you already have.
Custom quote
The price depends on your needs and the pace of change you want.
All prices shown are exclusive of taxes. Applicable VAT or other taxes depend in particular on the customer’s place of establishment and tax status. Any applicable taxes or reverse-charge mechanism will be specified in the commercial proposal and invoice.
If your need is already defined clearly enough, we can go straight to a development proposal.
Looking to work on a tool you already have, or to automate one specific task? These engagements are reviewed and priced according to their scope.
The Run and evolve offer is never imposed: you can take delivery, run your tool on your own, then come back when a need appears. Your access stays yours either way.
A proposed next step within 5 business days of our call.
OUR PROCESS
Goals, users and constraints. We align the scope quickly.
Product vision, architecture and measurable milestones.
Short iterations, visible releases, quality followed throughout.
Go-live, handover of your access and hands-on onboarding.
Uptime, fixes and further changes once the product is live.
CASE STUDIES
Each engagement is presented as challenge, solution and outcome.
The visuals in this section are illustrations: our clients’ interfaces are not published.

Tech agency · Run and evolve

Tech agency · Diagnostic then build

ABOUT
TerangaStack helps SMEs and startups build and evolve their custom software.
Jean-Louis Gallouin, founder of TerangaStack, leads the projects and the client relationship. His software development experience lets him connect your business goals to the technical choices, and follow their delivery.
Based in Nice, TerangaStack works across France and internationally, in French and in English.

Business software and automation for SMEs and startups, from Nice.
FAQ
SMEs and startups that want to replace spreadsheets and manual tasks with tools that fit their needs, launch custom software or evolve a tool they already use, in France and internationally.
We are based in Nice and work in French and English. Meetings are usually remote, or on-site when that is useful.
A 30-minute discovery call, usually remote: your context, your goals, your constraints, then a clear recommendation. You pick the slot online, with no commitment.
Within 5 business days you receive a free proposal: a summary of the need as we understood it, the recommended approach, a first budget indication when the information allows it, and the next step we suggest, either a diagnostic or a development quote. It points you in a direction; it is not the detailed analysis of the diagnostic.
The diagnostic exists to define what is worth building before development starts. We analyse your need and the material available in order to set priorities, identify the points to clarify and propose a delivery plan with an estimated budget. No development is included at this stage.
The diagnostic starts at €2,500 excl. VAT. The price depends on the scope, the complexity of the project and the work needed to clarify the requirements and the priorities.
No. If your need, your scope and your priorities are already defined clearly enough, we can review your project and prepare a development proposal straight away. The diagnostic is useful when some decisions still need clarifying before starting. When it does take place, it is invoiced separately from the build, and its deliverables remain yours even if you do not continue with us.
Yes, it is the same idea: the first usable version online, limited to the essentials, with the agreed deliverables and access handed over to you. The scope is defined with you, then priced in the quote.
Development is priced by quote. The price depends in particular on the scope, the features, the integrations needed and the complexity of the project. The quote sets out what is included, the deliverables and the acceptance criteria.
Two projects can look similar yet require a very different amount of work. We prefer to define a clear scope before proposing a price that fits the project.
The timeline is set out in the proposal, based on the scope and the agreed start date. It starts at project kick-off, not at the first call. Complex integrations or a change of scope along the way can push it out.
Prices are in euros excluding VAT, as a fixed fee on a defined scope. Payment comes in three parts: 40% on signature, which reserves your start date, 30% on delivery of an agreed intermediate version, 30% on final validation, before go-live. Each step maps to deliverables you can check. Anything outside the agreed scope is quoted and approved before we build it.
No. Prices shown are exclusive of taxes. Applicable VAT or other taxes depend in particular on the customer’s place of establishment and tax status. Any applicable taxes or reverse-charge mechanism will be specified in the commercial proposal and invoice.
You do. The access, the data, the hosting and the deliverables agreed in the contract are yours. Wherever possible we open the vendor accounts in your name, and we add no artificial dependency on our infrastructure: you can run your tool, hand it to another team, or take it in-house.
The contract separates two things. On one side, what is built specifically for your project (business logic, screens, interfaces, configuration and the agreed deliverables): those are handed over on the terms set out. On the other, the generic building blocks we reuse from one project to the next (libraries, components, internal tooling and ways of working): those remain our property and come with a right to use them within your product. That is what lets us deliver faster, without you depending on us to keep your tool running.
The services your tool needs in order to run stay on your side: hosting, database and storage, domain name, the external services used (email sending, SMS, AI, automation), payment provider fees if the tool takes transactions, and maintenance or the Run and evolve offer, depending on the plan you choose. Not every project carries all of these. You get an estimate before committing, and wherever possible we open the vendor accounts in your name.
When your software is live and needs to evolve, be maintained or be taken over: several tools to connect, sensitive data or payments, a need for technical follow-up over time. Custom quote.
Through a monthly fee set by quote: a reserved amount of working capacity, a priority list agreed with you, a regular review, then the fixes, integrations and changes delivered within that capacity, with a report of the work done. On top of that comes looking after the product in production: health checks, follow-up on real usage, and new automations when they save time. The contract sets out response times, how urgent requests are handled and what happens if capacity is exceeded. Fixing a defect in the delivered scope and adding a new feature are handled separately. The Run and evolve offer is not compulsory: you can run your tool without us and come back later.
Yes. We review how it works, its code and your priorities to define the fixes, integrations or changes to make.
Where it is relevant. We use modern automation and artificial intelligence tools when they handle an identified task better than a fixed rule: reading a document, sorting a request, drafting a message, spotting an anomaly. Decisions that commit your business are still approved by a person. We do not sell AI for its own sake: if a simple automation is enough, that is what we put in place.
Often, yes, and it is a good way to test an idea. The questions come when the tool becomes important to the business: several users with different permissions, data to bring over from your spreadsheets, connections to your other software, an outage to catch before it gets expensive, changes to make without breaking everything. We can help at that point, including by taking over a tool you started yourself.
GET IN TOUCH
Tell us about your need in writing, or book a call. We help you work out the right next step for your project.
A few lines are enough. We reply by email.
Rather talk it through? Pick a slot online.
30-minute call, no commitment. FR or EN.
Or email us at contact@terangastack.com