Development tools often determine whether a team's work looks like an orderly process or more like improvisation under pressure. In this category, you'll find practical guides to help speed up projects and improve code quality - though of course there is no one-size-fits-all solution. We compare development environments: Visual Studio Code, IntelliJ IDEA or Eclipse - and we point out those features that really come in handy every day (autocomplete, refactoring, debugging or Git integration). We also explain how to set up the editor for your own needs and which extensions are worth considering - such as Prettier, ESLint or GitLens - because not every "must-have" is actually essential. We describe version control systems, debuggers and performance profiling tools, as well as automated tests (JUnit, pytest, Jest): these items can significantly save hours of work and reduce errors in production. We don't leave out collaboration tools: code review platforms (GitHub/GitLab), CI/CD systems (GitHub Actions, Jenkins) or dependency managers (npm, Maven). Finally, we show how to automate repetitive tasks and build a meaningful workflow for the team - with practical configuration examples and notes from our own experience, because theory can be nice, but it doesn't always work in a real project.