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We are known as " Oleg Zamyshlyaev Stusio" — developers of online and offline solutions for the HR development and businesses meetings.

Looking for innovative approaches to business events design over 15 years, we have tried dozens of digital products, tested their "chips". We did not find a product that solves an appropriate way the needs of a moderator, facilitator, coach, and manager at the same time.

Therefore, in 2018 we started developing our digital solution.


The "TELLSY" name reflects the main essence of the web-service: Tell + See. You listen to a speaker, and you can give feedback at the same time.
TELLSY made by experts for experts
Oleg Zamyshlyaev
Founder of MOZlab and TELLSY
The rapid transformation of business processes sets high requirements for services and IT products. To be the best, we have developed a solution that allows you to hold events of any complexity and any format.
Ksenia Egoshina
We wanted to create a web service that brings people together, gives good emotions, helps, and charges with enthusiasm. And we did it. TELLSY is about collaboration, involvement, and facilitation. This is what any event managers need.
Alina Ferchuk
Head of marketing department
Today it is essential to hold events where viewers feel active, meaningful, and influential. TELLSY makes it convenient and affordable for everyone.
Timofey Zhukov
Customer Service Director
TELLSY is the evolution of the event process. The audience becomes more extensive, the dynamics are higher, and the presenter is closer to the participants. The distance between the Speaker and the audience is shortened. Everyone can express their opinion. Process management is faster and more accessible, and results can be uploaded in a single file.
Irina Safronova
Customer Service Manager
The organization of the event is very responsible and nervous work. It is crucial for us that our clients are confident in TELLSY and know that with TELLSY they have everything under control. Customers satisfied with the event are the best rating for us.
Anna Lozovaya
Project manager, methodologist
With the advent of TELLSY, it has become more exciting to develop event scenarios. TELLSY can be used to implement any technique depending on the request. It has become much easier to engage the audience and keep the viewer’s attention. TELLSY simplifies the implementation of even the most complex project.
Natalia Kurlyandskaya
UX designer, development manager
No matter how carefully the designers make the product, real users manage to use TELLSY unexpectedly. For me, this is a sign that he is alive and growing, which means that we are going in the right direction.
Pavel Yurtaev
Technical Director
TELLSY is and interesting IT development and topical IT project. The work on TELLSY is very dynamic, just like the events that we hold there. Every day we improve our product so that customers work at TELLSY with pleasure.
Anna Kolkova
Technical Support Team Leader
TELLSY is convenient not only for the presenter and participants but also for the operator managing the event. It allows you to create an infinite number of scenarios and conduct practical sessions for both business events and game formats.