Meteor partnership

We know technology and know which one will be right for you.

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

Agent John

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

Portals and websites

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 More information


Projects creation and coding, Outsourcing

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

Idea verification or service for startups

Idea verification or service for startups

We know technology, and that is why we know which one will be the best for you. This means that 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. More information

Technical support

Technical support

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


We focus on education

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

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.More information

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.

Discover the successes of our clients

Contact us
in case of your project

Call+48 795 661 935
use the form or write to:

Agent John

Software House Cat In Black

(+48) 512 483 112 Adam Trojanczyk, CEO
Adam Trojanczyk
In the case of ongoing projects:
(+48) 690 561 365 Maciej Sielecki
Maciej Sielecki
In the case of new projects:
(+48) 795-661-935 Kamil Mazerant
Kamil Mazerant
Agent John contact box:

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