Web applications, MVP, portals, websites, software and web design

We know technology

And know which one will be right for you.

Our services

Our priorities are: Your business and services at the highest possible level

We have extensive experience that we have gained while working for companies from various sectors. Thanks to this, we are able to help you choose the right technology and implement it to maximize the profits that result from this.

Portals and websites


Since 2009 we have been constantly looking after our clients’ businesses. We will implement modern solutions also in your company. We will solve every problem, we will help increase productivity and minimize costs.

Web-based applications

Web-based applications, real-time applications, hybrids

We have created projects for cities, systems for international corporations, experimental applications for personal development, a virtual trainer, toy builder wizard, and now we are waiting for your project.


Outsourcing, PSD to HTML, coding

Nothing is impossible for us. In our team, you will only find trusted, experienced people who will ensure that the entire implementation goes perfectly.


Services for startups, MVP, scaling, validation of ideas

We can implement some projects faster than our competition or your internal IT department. Working with us, you can rely on honesty, understanding, education, and the necessary support. 



Working with us, you can count on understanding, education and the necessary support in the field of technology, design and UX.

Business processes

Improve your business processes

We constantly care about our clients businesses. We will implement modern solutions also in your company. We will solve every problem, help increase productivity and minimize costs.

Technical support

Technical support

We analyze your product on an ongoing basis and capture unnatural behavior or errors before they cause a system failure.

We are a stable company.

We are a stable company.

Cat In Black Software House was founded in 2009. Our priority is to make everything that we do to be at the highest level possible. We are located in the Łódź Special Economic Zone, where after working hours we organize workshops and offer mentoring care for young companies and startups.

Guaranteed safety

All our works are covered by a minimum 12-month warranty. We also offer post-implementation support and care. We analyze your website/application on an ongoing basis, and if you only need us occasionally, we can work for you at a fixed hourly rate.

Contact us
in case of your project

Call +48 512 483 112
use the form or write to: [email protected]