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OWASP
Developer ResourcesThe open-source foundation's guides and checklists for building and securing software against common attacks.
freeweb
DocumentationBackendFree
A plain-language reference for every HTTP status code, from 200 to 599, with quick explanations.
This site is the definitive plain-English reference for HTTP status codes. Every code — from 200 OK through the 4xx client errors and 5xx server errors — gets a short, clear explanation of what it means and when you'd see it. It's the page you open when a service returns 418 or you can't remember whether 301 or 302 is the right redirect. The organization by category makes it skimmable, and each entry is concise enough to read in seconds. Small, focused, and endlessly useful to anyone who works with the web.
The open-source foundation's guides and checklists for building and securing software against common attacks.
An enormous index of programming cheatsheets gathered from across the web into one searchable page.
The distributed version control system that underpins almost all modern software development. Created by Linus Torvalds …
An online design tool that makes it possible for non-designers to create polished graphics, from social posts to full pr…
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