Rails Development Directory

Selleo is a web and mobile software development house. We design, develop, integrate and maintain web and mobile applications for entrepreneurs, business enterprises, agencies and third-sector/ NGO activists. We have created complex web apps as well as native and cross-platform mobile applications.


Bielsko-Biała, Poland

Number of Employees



  • Web/Visual/Interface Design
  • API Integration/Development
  • Code Review/Audits
  • User Experience/Usability
  • Security Audits/Development
  • Flash/Interactive Design
  • Search Engine Marketing/Optimization
  • Mobile/iPhone Development


Source Rooms

Diamond Mine
SourcerRooms is an e-sourcing service which supports tender-based sourcing processes and enables users to achieve tangible benefits in terms of time savings and more value extracted from a simplified and optimized supplier selection process.

Project completed in 2014
Global Sourcing Platform

sourcing platform
Global Sourcing Platform is an online business process management system developed to reduce the duration as well as the cost of sourcing projects by standardising and automating the processes and workflows involved..

Project completed in 2013

A SaaS software product for psychometric tests generation, sales & management. The platform allows the client to efficiently generate, distribute and administer HRM-related tests and surveys to their corporate customers.

Project completed in 2011