In this thesis we are talking about Java ecosystem. The thesis is divided into two chapters. In the first chapter we are describing tools which make developers easier to develop applications. The first chapter consists of several subsections: Git Version Control - version control system for tracking changes in computer files and coordinating work on those files among multiple people; Maven - tool that provides developers a complete build lifecycle framework; Ant - java based build tool from Apache Software Foundation; Continuous Integration - Jenkins - popular tool for performing continuous integration of software projects; IntellJ IDEA - java integrated development environment for developing computer software; Tomcat - application server; Jar/War files - compressed files; Jira - software for tracking new tasks and bugs; Spring Mvc framework - provides ready components that can be used to develop flexible and loosely coupled web applications. In the second part of thesis we show how to use these tools from the first chapter when we develop web application.