Tools 13 sites
The daily-use utility belt.
regex101
PCRE2/JS/Python/Go/Java/.NET. Savable library with account. Privacy caveat: keystrokes sent server-side.
JSONCrack
Free web version; Premium $6/mo. Modular architecture in v5.
diagrams.net / draw.io
No Enterprise gating. Browser + desktop, no signup. Go-to for architecture sketches, C4.
CyberChef
Open source, browser-only, data never leaves your machine.
transform.tools
JSON to TS/GraphQL/Zod/Go, SVG to JSX, HTML to Pug. Indispensable for one-off schema conversions.
Excalidraw
Free core enough for most work. Excalidraw+ optional cloud persistence.
tldraw
Free canvas; SDK paid for commercial multiplayer embed.
Compiler Explorer
Community-supported. Indispensable for perf-critical code work.
caniuse
Authoritative baseline for feature-detection decisions. Feeds shields.io, PostCSS.
bundlephobia
Still the standard pre-install check. Maintenance-mode-ish.
pkg.pr.new
StackBlitz-Labs maintained. Standard for library authors now.
Ray.so
17 themes, 50+ languages, PNG. Prefer over Carbon (dormant since Dec 2024).
ShareX
80+ upload destinations. Best-in-class Windows tool for our corp-laptop context.