Design and development

GitHub provides code hosting and software development collaboration tools.

MDN Web Docs provides documentation and learning resources for web technologies.

Figma provides collaborative tools for interface design, prototypes and related visual work.

Canva is a visual creation platform for designs, presentations and other communication material.

Replit provides an online environment for building software and working with AI-assisted development tools.

Adobe Express provides design and content-creation tools for making graphics, social content, video, and other supported visual projects.

Photopea is a browser-based image editor.

Pixlr provides online photo-editing and design tools.

Penpot is an open-source design and collaboration platform for interfaces and other visual work.

Sketch provides a design application and collaboration tools used for interfaces, prototypes, and related visual projects.

Inkscape is an open-source vector-graphics editor with a strong focus on SVG.

GIMP is an open-source image editor for tasks such as photo manipulation, graphics work, and raster-image editing.

Blender is an open-source creation suite for 3D modeling, animation, rendering, and other supported media workflows.

GitLab provides tools for code hosting and software development workflows.

Stack Overflow is a programming question-and-answer website.

CodePen provides an online environment for experimenting with front-end web code.

JSFiddle provides a browser-based environment for experimenting with HTML, CSS, JavaScript, and supported web resources.

CodeSandbox provides development environments and tools for creating, running, and sharing supported software projects.

Visual Studio Code is Microsoft's code editor with tools for editing, navigation, debugging, source control, and extensions.

Vercel provides a platform for deploying and running web applications.