Developer Lab
Preview HTML and CSS, inspect JSON and practise HTTP responses without a live backend.
Find your next
AI or tech project.
Search public repositories for cybersecurity, developer tools and AI workflows, then build your skills with practical guides.
5,477 repositories in our current index. Selected public projects, with links to GitHub. Browse the index.
Explore AI, security and developer collections: practical checklists, search examples and source documentation.
Start with the work you need to do.
Categories help narrow the search. They describe discovery sources, not a security review of each project.
More than a repository list.
Try an idea, solve a file task or read the explanation before using a tool.
Browser tools
Work with PDFs, images and text, with instructions and limits alongside each tool.
Security and developer guides
Follow worked examples on account security, privacy, APIs, testing and deployment.
Web proxy
A secondary browsing tool with clear privacy limits. Avoid passwords and sensitive information.
Learn something you can put to use.
Original guides with examples, limitations and further reading.
Build a readable workshop page with semantic HTML, flexible CSS and keyboard checks, then test a small change in the Developer Lab.
Backend & APIs
Design a Small API Contract Before Writing the Backend
Define requests, responses and failure states for a lesson service, then explore the same ideas in a simulated HTTP workbench.
Use books, physical copies and loans to learn keys, constraints and transactions before adding more tables to a first SQL project.