Custom business application agency for SMEs

Our agency builds custom business applications and management software for SMEs: intranet, extranet, internal CRM, production tracking, statistics or reporting. We replace Excel files and double data entry with a tool shaped around your processes and used every day by your staff. You own the code.

See the Solteo case
4.4/5 · Trustpilot

Let's talk about your needs

Three questions to prepare a useful conversation.

Question 1/3

What tool do you want to build?

They trusted us to build their business tools

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3 types of business applications we build

Internal management, customer portal or performance tracking: each management tool answers a specific need of your company.
  1. Intranet and internal management tools

    We replace a critical spreadsheet with a single tool: cases, documents, scheduling, inventory, quotes or recruitment tracking in one intuitive interface.

    Prepare my requirements
  2. Extranet and customer portal

    An online space, accessible from your website, where customers, suppliers or partners can follow orders, invoices and requests, connected to your software. Ideal for B2B commerce.

    Web development
  3. Steering, statistics and reporting

    Dynamic dashboards and real-time statistics: production, sales and customer service data brought together to decide faster.

    Spot my tasks to automate

Business applications by department

  • Inventory management
  • Production tracking
  • Team scheduling
  • Sales CRM
  • Recruitment tracking
  • Document management
  • Quotes and invoicing
  • Quality and compliance
  • Data and dashboards
  • Supplier portal
  • Field interventions
  • New hire onboarding
Dashboard of the Solteo business application built by PeakLab

Solteo: a business application that speeds up case handling

For Solteo, a solar panel installer, PeakLab was chosen to build a management platform that automates administrative procedures: document generation, case tracking, reminders, built-in CRM, reporting and real-time statistics.

According to the published case, administrative handling time per case dropped by 60% and the team now manages 50 projects a month instead of 20. These results belong to Solteo: each new project sets its own goals.

-60%
administrative time per case
20 → 50
projects managed each month
15% → 3%
case errors

What our business application agency delivers

From the scoping workshop to follow-up, we design and build management software suited to your business, with a verifiable deliverable at each stage of the project. A pragmatic digital transformation method, designed for your teams' efficiency.

  1. 01

    Process audit and advice

    We follow a real case with the people who do the work: tools, re-entry, manual tasks, exceptions, scope. The analysis concludes on the right solution: keep, configure off-the-shelf software, automate or build. Prepare the need with our requirements generator.

  2. 02

    UX design and user interface

    We design an intuitive, personalised user interface for each role, tested as a clickable prototype. Every feature is validated by your users: a good user experience is the first condition for adoption.

  3. 03

    Custom development

    Our senior developers, experts in their tech stack, build the application with proven technologies (React, Node.js, Symfony or Laravel), chosen for your context. Code review and automated tests at every release: a high-performing, maintainable solution.

  4. 04

    Migration of existing data and statistics

    We take over your files, check duplicates and rejects, then structure the data to produce reliable statistics and dashboards. Reporting updates in real time, without manual exports.

  5. 05

    ERP, CRM and existing tool integration

    We integrate the application with your management software, CRM, accounting or messaging through APIs to keep information flowing. Each flow has an owner, error handling and a documented recovery.

  6. 06

    Security, go-live and maintenance

    Role-based access, logs, backups and updates follow the CNIL's essential rules. After go-live, technical support and maintenance cover the whole life of the application.

Our commitments on your business application

Tested business rules

Every calculation, validation and access right is tied to a real case and a test before delivery, so the tool stays reliable.

Agile project management

A simple method: a demo at every sprint, a weekly check-in and a direct channel: you can follow the project's progress in real time.

Staff training

Role-based training, a short guide and support at launch so your users adopt the new application from day one.

Maintenance and technical support

Monitored data hosting, fixes, security updates and improvements, with a maintenance plan and response time set in the contract.

Our agile methodology, step by step

  1. 01

    Scoping workshop

    Needs analysis

    A remote workshop to map processes, roles, useful data and measurable goals.

  2. 02

    Design

    Prototype and quote

    Journeys, interface and business rules validated in a prototype; scope and budget are set in writing.

  3. 03

    Development

    Sprints and demos

    We build the priority features in sprints, with a weekly check-in and your feedback integrated as we go.

  4. 04

    Acceptance and go-live

    Testing and training

    User testing, data migration, training material: the tool opens once everything has been validated.

  5. 05

    Improvements and support

    Long-term support

    We track usage and evolve the application with your business.

What our clients say.

Authentic testimonials from those who trusted us.

“We're going to talk about AI, development, digitalization, but I think we shouldn't forget the human aspect and that's what I found with PeakLab. This proximity, this human support. I needed advice, not just an executor.”

Victor

Victor

CEO at ODD Pharma

“Great collaboration experience. Lucien demonstrated excellent technical skills, organization and listening. The project progressed efficiently under great conditions with smooth communication. Reliable, involved and full of initiative. I recommend.”

Janine

Janine

Co-founder at Astérisque

“Smooth collaboration and concrete results. The platform allowed us to automate our procedures and accelerate the management of our solar projects.”

Alexandre

Alexandre

Co-founder at Solteo

What is a business application?

A business application, also called line-of-business software, is a management tool built for a process specific to your activity: case tracking and handling, scheduling, production, inventory, quality, quotes or recruitment. Unlike off-the-shelf software, it follows your rules, roles and vocabulary. Accessible from a web browser, on desktop or mobile, it centralises data instead of scattering it across Excel files, emails and isolated tools. It is often the first step in an SME's digital transformation.

Custom software is not a goal in itself: an off-the-shelf product, a configured software package or an n8n automation is sometimes enough. We recommend the simplest suitable solution rather than development by default. When a custom tool is justified, the benefits are concrete:

  • Time saved and productivityNo more double entry or repetitive tasks: your staff focus on their real work.
  • Process optimisationThe workflow is redesigned before it is coded, not copied from the existing spreadsheet: an immediate efficiency gain.
  • Reliable, secure statisticsA single source of information, data protected by role-based access rights and tested backups.
  • Continuous improvementThe application evolves with your business, release after release, without depending on a vendor.

Business application or web application: what's the difference?

A business application serves your internal teams first: management rules, roles, data migration and adoption. For a public portal or a broader platform, see our web development agency. To test an idea before investing, start with an MVP: we then build a smaller first version.

Frequently asked questions about business applications

Cost, timeline, Excel, ERP, data migration, security, adoption and code ownership.

An agency brings advice, design, development, testing and support into one team. You avoid coordinating several providers and keep one contact accountable for the result, from the scoping workshop to support after go-live.

Look at its published case studies, scoping method, code ownership, how it handles migration of existing data and maintenance. A good agency also tells you when an off-the-shelf solution is enough.

An ERP covers standard company functions: accounting, purchasing, inventory, payroll. A business application handles a specific process the ERP covers poorly. The two often work together: the application connects to the ERP rather than replacing it.

Not always. A spreadsheet suits a one-off, rarely shared analysis. An application becomes useful when the file is critical, shared by several people, hard to control or full of diverging copies.

The budget depends on the number of roles, rules, integrations and the data to migrate. Our quote separates scoping, design, development, go-live and maintenance. A serious estimate comes after the scoping workshop, not from a price per screen.

The schedule depends on scope, your validations and interfaces with your software. A first useful version can ship quickly if the scope stays tight; the quote sets milestones, assumptions and dependencies.

Scoping workshop, design and prototype, development in sprints, acceptance with data migration and training, then maintenance and improvements. You validate each step before moving to the next.

We inventory files, databases and attachments, map them to the new structure and test the migration on a copy. Totals, rejects and gaps are validated by your teams before the switch.

Yes, if the tool offers an API or a reliable export. We check documentation, rights and limits before promising the integration. Each flow has an owner and a recovery procedure in case of error.

Future users take part in scoping, prototyping and testing. The rollout includes role-based training, a short guide and support at launch. Adoption is measured by real usage, not by the number of accounts created.

Role-based access, authentication, logs, tested backups and regular updates. Personal data gets a dedicated analysis. A certification requires an independent audit: we do not claim one without proof.

You do. The contract sets out the transfer of rights, third-party components, code repository, access and the documentation handed over so another team can take over the tool.

Yes, when it brings a measurable gain: reading documents, sorting requests, searching an internal knowledge base. Human validation remains in place for sensitive decisions.

The maintenance contract covers fixes, security updates, hosting monitoring and improvements, with a defined response time.

Yes. Our head office is on rue François Ier in Paris, and we work remotely with SMEs in Lyon, Bordeaux, Nantes or Lille: video workshops, regular demos and a direct channel with the team.

Lucien Arbieu, CEO of PeakLab

Can't find your question?

Ask Lucien, PeakLab's CEO, directly during a free discovery call.

Does your process deserve a business application?

Tell us where you lose time today: the first conversation helps decide what comes next. Based on rue François Ier in Paris, PeakLab works remotely with SMEs in Paris, Lyon, Bordeaux or Nantes. First 30-minute workshop free, with no commitment.

  1. 1Free 30-minute call
  2. 2Scoping workshop
  3. 3Written proposal
Lucien Arbieu, CEO of PeakLab

Lucien ArbieuCEO and co-founder of PeakLab