Websites, custom software, e-commerce, automation, AI voice agents and SEO. Newstack designs, builds and grows your products — from idea to launch.
Trusted to build and launch their product
Just like our logo: layers that stack. From a simple site to a complex product, we assemble the stack that matches your ambition.
Short iterations, driven by business outcomes rather than a feature checklist.
We start from your business goals and your users — not from a frozen spec sheet.
Mockups, architecture and prototypes to validate the idea before the first line of code.
Development in short sprints, with visible, testable deliverables at every step.
Measurement, SEO and automation to turn the product into a growth engine.
While competitors let the phone ring out, your agent picks up 24/7, understands natural language and hands off to a human when needed.
We install functional AI agents in businesses that handle real tasks: quotes, invoices, follow-ups, support. And when the task is physical, we integrate robotic solutions directly into your flows: logistics, handling, inspection.
Agents plugged into your tools (ERP, email, CRM) that encode, reconcile, answer and follow up. In production, not demos.
Mapping of your processes, choosing the right automation points, progressive rollout with your team. The scope is priced upfront.
Physical solutions for the warehouse and the line: internal transport, picking, inspection — integrated with your flows and systems.
The entry-point audit is fixed-price, published. You know where your time goes before deciding to invest.
A clear entry point:from €1,500
A two-day on-site audit: a costed map of lost time and a fixed-price project plan — software agents, integrations or robotics.
See the €1,500 auditA few projects we designed, built and launched with our clients.
Showcase site for a pharmacy: up-to-date hours and services, an optimized Google listing and content built for local search.
Turnkey web application delivered on Newstack infrastructure: a clear interface, centralized data and zero maintenance overhead.
Online service for custom speeches (weddings, milestones, public speaking): a simple ordering flow and SEO-optimized content.
AI voice-agent platform that answers every call 24/7 for restaurants: reservations, orders and customer service, with no hold time.
Agent-first ERP that replaces forms with a plain conversation: stock, sales and orders update themselves as you type, drop in an invoice or send an email.
Web app to learn derivatives by simulating them: payoff diagrams, scenario tables, Greeks and risks computed live — no account, no broker.
Privacy-first AI assistant: encrypted conversations, never stored and processed exclusively on European servers (GDPR).
Booking site for PEB energy certification in Wallonia: clear pricing, a thorough FAQ and online booking, powered by an SEO engine.
Our articles on the web, automation, AI and SEO.
Un prospect contacté dans les cinq minutes a jusqu'à 21 fois plus de chances d'être qualifié. Découvrez pourquoi la vitesse de réponse est décisive et comment la garantir, même hors horaires.
Votre site est en ligne, mais vos pages restent invisibles dans les résultats ? Voici les leviers SEO on-page à activer page par page : balises, structure, contenu et maillage interne.
La facturation et le suivi des paiements comptent parmi les processus les plus chronophages d'une PME. Découvrez comment automatiser rappels, relances et mises à jour pour améliorer votre trésorerie.
We continuously produce the articles that rank your site on Google and inside AI answers: ChatGPT, Perplexity, AI Overviews.
Keywords your customers actually search, cluster-based content architecture, AI-assisted drafting reviewed and signed off by a named human, automatic publishing on your own domain, internal linking and rank tracking. You do nothing: the flow runs every month — with a deliberate cap of 12 articles per month per client, because human review is not negotiable.
The queries your customers actually type, with the intent behind each one, before a single line is written.
A pillar, service pages and articles that interlink to build domain authority.
Articles optimized for Google and for generative engines: direct answers, dated figures, structured FAQs.
Every article is reviewed and signed by a named human before automatic publishing on your own domain.
Free analysis of your site in 2 fields (email + URL), then a €750 SEO audit if you want to go further.
Articles are published on your domain — never on ours — and every article carries something only your business can provide: a figure, a case, a limit. The €20-a-turnkey-article offers do neither of these two things.
Tell us about your project. We'll get back to you within one business day with concrete ideas — no jargon.
