jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.

Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.

Telosys - Telosys is a lightweight Open Source code generator. Telosys allows to generate any kind of language (Java, Python, GoLang, PHP, JavaScript, TypeScript, C#, etc). It works without UML model. All the code generation templates are customizable.

Solis - A live design output that integrates with code editor

Lime Text - Lime Text is an open source text editor.

CodeSandbox - Online playground for React