SNCF
Tourism · Transport
Web application and software development expertSince 2018
Custom web applications, ERP, CRM and business software.
We design and build software tailored to your business.
From ERP to CRM, business software and back-office tools, our team designs, builds and maintains custom digital solutions shaped around your processes and your users.
4.9/ 5
200+projects delivered
8years in business
[ 200+ Projects ]
They trust us.
They trust
us.
Startups, mid-caps, large enterprises, public sector: Kosmos supports organisations of every size in building their web applications and software.
[ The challenge ]
Your business doesn't run like off-the-shelf software.
Software built for your business.
When your existing tools no longer fit the way you're organised, a custom web application or software brings all your processes together in a single solution.
We design the solution around your real-world constraints.
[ Value ]
Software designed to create value, at every stage.
Before we start building, we pin down the indicators that will measure your solution's impact, at every stage.
- 01
Time saved
- 02
Fewer manual tasks
- 03
Fewer errors
- 04
Clearer view of your operations
- 05
No more duplicate data entry
- 06
Faster processes
- 07
Smoother flow of information
- 08
Capacity to support your growth
[ Solutions ]
What kind of software do you want to build?
Every business has its own processes, constraints and challenges.
We design custom web applications and software that adapt to the way your business works, rather than making you adapt to an off-the-shelf tool.
Explore our main solutions:
Custom ERP
Run your whole business from one automated platform.
We build custom ERP systems that bring your operations together and connect your processes in a single platform.
Custom CRM
A CRM built around your sales process.
Does your sales cycle have its own logic? We design a CRM around your sales methods, your teams and your existing tools.
Business software & back-office
Take your business processes digital with software built for what you do.
When off-the-shelf software no longer fits your processes, we build a solution that matches the way you work.
Need something more specific?
ERP, CRM and business software are just a few examples.
We also build SaaS products, web platforms, customer portals, internal tools, management applications and bespoke business solutions.
[ Method ]
Your custom software, built step by step.
01
Design & scoping
- Needs analysis
- Functional definition
- Tailored strategy
- Targeted advice
- Innovation
02
Design
- Bespoke mockup
- Software architecture
- Data model
- API design
- Co-design
03
Engineering
- Bespoke
- Expert developers
- Robust, scalable code
- Performance and durability
- Cross-platform
04
Testing & deployment
- Rigorous testing
- Guaranteed stability
- Smooth launch
- Beta testing
05
Maintenance
- Continuous updates
- Technical optimisations
- Proactive monitoring
- Support and assistance
06
Security
- Advanced protection
- 24/7 monitoring
- Guaranteed confidentiality
- Regulatory compliance
[ References ]
Web applications and software in production.
Management platforms, client portals, internal tools: a selection of projects designed, built and maintained by our teams.
Hôpital Necker
Healthcare · Pharma
Clever Energies
Industry · Manufacturing
SDIS
Security · Defence
ANAII
Industry · Manufacturing
Sodimas
Industry · Manufacturing
Teameo
Other
EatIn
Other
VRFinance
Finance · Insurance
Roche Bobois
Industry · Manufacturing
Cuir Center
Industry · Manufacturing
MonAssu
Finance · Insurance
Familee
Healthcare · Pharma
[ Team ]
Entrust your
project
to our
web app and
software experts.
Our experts in web application and software development build your project, delivering superior technical and functional quality within shorter timeframes.
15
Engineers, developers and designers who are experts in applications.
100+
Solutions built by Kosmos since 2018.
78%
Of loyal clients ready to continue their project with Kosmos.
FRANCE
Paris, Lyon, Marseille, Nice, Geneva and across France.
15
Experts
100+
Projects delivered
78%
Loyal clients
4.9/5
Average rating
[ Scalability ]
A solution that grows with your business.
Your software can start with a few core features and evolve step by step.
Over time, we can add new modules, users, workflows, integrations or AI features.
- V1 · Launch
The essentials
The must-have features, in production quickly.
- V2 · Growth
New modules
New modules and new users join the tool.
- V3 · Automation
Workflows and integrations
Your processes run on their own and the tool connects to your information system.
- V4 · Intelligence
AI features
AI comes in wherever it saves your teams time.
You're not just building a tool. You're building a platform that can evolve with your business.
[ Security ]
Security and access control.
We build security requirements in from the design stage:
- Authentication01
- Roles and permissions02
- Access control03
- Audit logging04
- Encryption05
- Backups06
- API security07
- Environment separation08
The architecture is adapted to the nature of your data and your operating constraints.
[ Tech Stack ]
The best technologies for your web applications and software.
We master the best services and technologies to develop, maintain and scale your web applications and software.
[ Ownership & independence ]
Your software. Your code. Your data.
Source code handed over to you
You stay in control of your solution.
No technology lock-in
Documented architecture and standard technologies.
Your data belongs to you
You control how it is hosted and used.
A transferable solution
Your in-house team or another provider can take it over.
[ Budget & timelines ]
What budget and timeline for custom software?
| Project | Indicative budget | Indicative timeline |
|---|---|---|
| First business module | From €8k | 2–3 weeks |
| Business software / Back-office | From €20k | 1–2 months |
| Custom CRM | From €20k | 1–2 months |
| Custom ERP | From €40k | 3–4 months |
| Complex IS / platform | On assessment | Dedicated roadmap |
Get a first estimate within 24 hours.
Every project goes through scoping and a detailed estimate before any commitment.
[ FAQ ]
Frequently asked questions.
Answers to the questions we are asked most often about this kind of project.
Innovation Tax Credit
Naxan Group is CII-accredited: your company can claim a tax credit on the outsourced costs of developing a solution that is new and innovative in its reference market.
20%of outsourced development costs
Bpifrance expert
Kosmos works within the “Diag Axes d'Innovation” programme: we help SMEs and mid-caps identify their innovation paths and assess the feasibility of their projects, upstream.
50%of the diagnostic subsidised by Bpifrance
[ Anniversary ]
8 years of innovation,
by your side.
8 years of passion, boldness and innovation! Projects, challenges and successes. All thanks to you.
- Since
- 2018
- Years
- 08
THANK YOU!
[ Press ]
They talk about us.
Explore the mentions and analyses that spotlight our work and our innovations across the business and tech press.
Free quote · no commitment
Let's discuss your project.
Describe your project. Our team replies within 24 hours with free technical scoping, along with a clear estimate of costs and timelines. No commitment.
- Reply within 24 hours from a project manager
or engineer.Reply within 24 hours from a project manager or engineer. - Technical scoping and quote, with no fees.
- No commitment, your data stays
confidential.No commitment, your data stays confidential.
01 76 50 66 44
Monday to Saturday · 9am to 6:30pm
hello@kosmos-digital.com
Paris · Lyon · Marseille · Nice · Geneva
Kosmos is CII-certified
Your company may qualify for a tax credit equal to 20% of the costs linked to developing its solution.
Quick estimate
Free scoping & estimate in less than 24h
Describe your project and we'll get back to you with a costed estimate and a roadmap.