Developer Resources
Curated tools and sites worth bookmarking. Each entry tells you what it does, why it is useful and how much it costs.
Carbon
Create and share beautiful images of your source code.
Industry standard for sharing code in blog posts, slides and social media. Zero setup, dozens of themes, supports any language — paste, style, export.
Ray.so
Create polished code images with gradients and editor window styling.
Built by the Vercel team, produces editorial-level visuals. A great Carbon alternative when you want more visual impact for posts and presentations.
Transform Tools
Polyglot format converter: JSON to TypeScript, SQL to Prisma, SVG to JSX, YAML to JSON, and 30+ more.
One tab that replaces hours of manual schema, type, and config rewriting. Open source and runs entirely in the browser — no install, no account.
Wappalyzer
Detect the technologies behind any website — frameworks, CDNs, analytics, CMS, and more.
Instantly reveal a competitor's or reference site's full stack without reading their source code. Browser extension adds a one-click overlay to any page.
JSON Crack
Visualize JSON, YAML, CSV, and XML as interactive graphs.
Makes large nested API payloads and data structures readable at a glance. Paste any raw JSON and instantly get a navigable graph — no install required.
explainshell
Paste any shell command and get each flag and argument explained from the man page.
Indispensable for understanding commands copied from Stack Overflow or docs without hunting through multiple man pages. Works with complex piped commands too.
Excalidraw
Virtual whiteboard for sketching hand-drawn-like diagrams.
Zero setup, runs in the browser, exports SVG/PNG. The de facto standard for sketching architectures, flows and ERDs in calls and docs.
dbdiagram.io
Design database schemas using a simple DSL — write code, see the diagram in real time.
Fastest way to draw an ERD and share it with the team. Exports directly to SQL (PostgreSQL, MySQL, and more) straight from the diagram.
Upstash
Serverless Redis and Kafka with per-request billing — no server to manage.
The fastest way to add caching, rate limiting, or a queue to any cloud project. Generous free tier and SDKs for all major languages and runtimes.
Hoppscotch
Lightweight API ecosystem that runs in the browser — REST, GraphQL, WebSocket, SSE.
Postman alternative with no installation, real-time collaboration and self-hostable. Ideal when Bruno is not an option, like on someone else's machine.
Bruno
Git-friendly API client that stores collections as plain local files.
Postman alternative with no mandatory account or forced cloud sync. Collections live alongside your code as plain files, fully versionable and shareable via Git.
Coolify
Self-hosted open-source PaaS — deploy apps, databases and services on your own VPS.
Heroku/Vercel/Netlify alternative that runs on your own infrastructure. Visual UI for Docker and Nixpacks deployments, with one-click templates for dozens of services.
k6
Load testing tool with JavaScript scripts and native CI/CD integration.
Simulate hundreds of concurrent users with code, not a GUI. Integrates with Grafana for result visualization and runs in any pipeline without friction.
Playwright
End-to-end testing framework by Microsoft supporting Chromium, Firefox, and WebKit.
Modern API with built-in auto-wait (no sleeps), code generation by recording, and visual debug mode. The current standard for integration testing in web applications.
CyberChef
Swiss army knife for encoding, decoding, hashing and data analysis in the browser.
Chain operations like Base64, AES, SHA, JWT decode, XOR and hundreds more without sending data to a server. Made by GCHQ, runs fully offline.