Coming together is a beginning, staying together is progress, and working together is success.

Henry Ford

About us

Trzecia Strona Sp. z o.o. realizes the idea of working together to support libraries, by people with many years’ experience in the world of corporations, private businesses and the public sector. We share one goal: developing and delivering professional, comprehensive solutions for libraries. Our extensive experience includes collaboration with giant, medium and small IT solution providers as well as employment in the country’s largest media companies.

Regardless of the number of entities involved in the implementation of a project, we take full responsibility for its success. Our team consists of people who loathe mediocrity and the “just get it over with” approach to projects. People truly matter to us – thus, not only are the final results of our work important to us, but also friendly and long-term relationships with our clients. We are 110% engaged in every project we take, and every client is equally important to us.

Our mission is to prepare a complete range of products for libraries, combining the latest technology with good prices. Compare our prices with others on the market and you’ll see that no one can match us in our quality range – the highest world level. And we believe that intensive work on subsequent projects will allow us to further expand the range of services we offer.

In 2016 we began to work with the largest online community of book lovers in Poland – the website. Our cooperation resulted in Metrao, the most effective book search engine in all of Poland’s libraries, used by thousands of readers. Metrao works independently of the cataloguing system used by other libraries. It provides functionality focused on the reader’s needs, directing users to the nearest library for the book they seek in the simplest way possible.

Since 2017, under a contract signed with Librus, we have been developing the most effective cataloguing system for school libraries operating entirely in the cloud.

We hope you take an interest in the offer we present in these pages. We’ll be happy to work with you. But we will be truly satisfied when you recommend our services to other libraries. We know librarians well – a recommendation from them is the highest form of recognition.

We encourage you to familiarize yourself with our offer – if you have any questions, we’ll be happy to answer them!



have chosen our server infrastructure to host their cataloguing systems


School libraries

catalogue in systems based on the e-biblio source code

our clients