• aem1kMartin Kleppe's JavaScript hacks, demos, and code-golf creativityaem1k.com
• fffuelSVG generators for gradients, patterns, blobs, and colorfffuel.co
• favicon.ioGenerate favicons from text, an emoji, or an imagefavicon.io
• ASCII Art ArchiveA big, searchable archive of ASCII artasciiart.eu
• Hack The BoxHands-on hacking labs and pentesting practicehackthebox.com
• neal.funNeal Agarwal's playful interactive web experimentsneal.fun
• LospecPixel-art palettes, tools, and a huge palette listlospec.com
• Code GolfSolve programming puzzles in the fewest characterscode.golf
• roadmap.shStep-by-step developer learning roadmapsroadmap.sh
• DevDocsFast, unified, offline-friendly API documentationdevdocs.io
• Can I useBrowser support tables for web platform featurescaniuse.com
• regex101Build, test, and debug regular expressionsregex101.com
• ExcalidrawVirtual whiteboard for hand-drawn diagramsexcalidraw.com
• tldr pagesCommunity cheat sheets for command-line toolstldr.sh