Resources
The senior dev resource directory
200+ hand-picked free resources every senior dev should bookmark: framework docs, runtimes, LLM tooling, databases, observability, design and learning paths. No affiliate links, no paywalls.
Frontend Docs
React Docs
Official React reference and learn.
Frontend Docs
Vue Docs
Vue 3 progressive framework reference.
Frontend Docs
Nuxt Docs
Vue meta-framework, SSR/SSG/ISR.
Frontend Docs
Svelte Docs
Svelte 5 and Runes reference.
Frontend Docs
SvelteKit
Svelte's full-stack framework.
Frontend Docs
SolidJS
Reactive, no-VDOM UI library.
Frontend Docs
SolidStart
Solid's meta-framework.
Frontend Docs
Astro Docs
Content-first islands framework.
Frontend Docs
Qwik
Resumable framework, near-zero JS.
Frontend Docs
Remix Docs
Web-fundamentals React framework.
Frontend Docs
Next.js
App router, RSC, edge runtime.
Frontend Docs
TanStack Start
Type-safe React full-stack.
Frontend Docs
TanStack Router
Type-safe React router.
Frontend Docs
TanStack Query
Powerful async state mgmt.
Frontend Docs
Angular Docs
Angular framework reference.
Frontend Docs
Preact
3kB React-compatible UI lib.
Frontend Docs
Lit
Web components made simple.
Frontend Docs
HTMX
HTML over the wire.
Frontend Docs
Alpine.js
Sprinkle of JS for HTML.
CSS & Styling
Tailwind CSS
Utility-first CSS framework.
CSS & Styling
shadcn/ui
Re-usable React components.
CSS & Styling
Radix UI
Unstyled accessible primitives.
CSS & Styling
Headless UI
Tailwind's unstyled components.
CSS & Styling
Open Props
CSS variables for fast design.
CSS & Styling
PicoCSS
Classless minimal CSS.
CSS & Styling
UnoCSS
Atomic CSS engine, instant.
CSS & Styling
Panda CSS
Type-safe CSS-in-JS at build.
Backend Frameworks
Express
Minimal Node.js framework.
Backend Frameworks
Fastify
Fast, schema-first Node API.
Backend Frameworks
Hono
Ultrafast edge web framework.
Backend Frameworks
Elysia
Bun-first ergonomic framework.
Backend Frameworks
NestJS
Opinionated Node framework.
Backend Frameworks
FastAPI
Modern Python web framework.
Backend Frameworks
Django
Batteries-included Python.
Backend Frameworks
Flask
Micro Python framework.
Backend Frameworks
Rails Guides
Ruby on Rails docs.
Backend Frameworks
Phoenix (Elixir)
Productive Elixir framework.
Backend Frameworks
Laravel
PHP web framework.
Backend Frameworks
Axum (Rust)
Ergonomic Rust web framework.
Backend Frameworks
Actix Web
Powerful Rust web framework.
Backend Frameworks
Gin (Go)
Fast Go HTTP framework.
Backend Frameworks
Echo (Go)
High-performance Go framework.
Runtimes & Languages
Node.js
JavaScript runtime.
Runtimes & Languages
Bun
Fast all-in-one JS runtime.
Runtimes & Languages
Deno
Secure TS-first runtime.
Runtimes & Languages
TypeScript
Typed JavaScript reference.
Runtimes & Languages
Rust Book
The official Rust book.
Runtimes & Languages
Go Docs
Go language reference.
Runtimes & Languages
Python Docs
Python 3 reference.
Runtimes & Languages
Zig Docs
A simple safe systems lang.
Runtimes & Languages
Elixir Docs
Functional concurrent lang.
Runtimes & Languages
Kotlin Docs
Pragmatic JVM language.
LLM Tooling
LangChain JS
Compose LLM apps in JS.
LLM Tooling
LangChain Python
Compose LLM apps in Python.
LLM Tooling
LlamaIndex
Data framework for LLMs.
LLM Tooling
Vercel AI SDK
Streaming UI helpers for LLMs.
LLM Tooling
Ollama
Run LLMs locally.
LLM Tooling
LM Studio
Local LLM desktop app.
LLM Tooling
llama.cpp
C++ LLM inference engine.
LLM Tooling
OpenRouter
One API for many models.
LLM Tooling
Hugging Face Transformers
SOTA model library, OSS.
LLM Tooling
Hugging Face Datasets
ML datasets library.
LLM Tooling
Replicate
Run open models via API.
LLM Tooling
Together AI
Open model inference cloud.
LLM Tooling
DSPy
Program LLMs, don't prompt them.
LLM Tooling
Instructor
Structured outputs from LLMs.
LLM Chat
ChatGPT
Free GPT chat with web + vision.
LLM Chat
Claude
Anthropic's long-context assistant.
LLM Chat
Gemini
Google's multimodal assistant.
LLM Chat
Mistral Le Chat
Open-weights backed assistant.
LLM Chat
Perplexity
Answer engine with citations.
LLM Chat
Hugging Chat
Open-source model playground.
LLM Chat
Groq
Ultra-fast LLM inference, free tier.
LLM Chat
Poe
Many models in one UI.
LLM Chat
DeepSeek
Strong free reasoning model.
LLM Chat
Phind
Search engine for developers.
IDEs
VS Code
Free, extensible editor.
IDEs
Cursor
AI-native fork of VS Code.
IDEs
Zed
Fast, collaborative Rust editor.
IDEs
Neovim
Hyper-extensible Vim.
IDEs
Helix
Post-modern modal editor.
IDEs
JetBrains Community
IntelliJ / PyCharm free editions.
IDEs
Replit
Browser IDE with AI.
IDEs
StackBlitz
Instant in-browser dev envs.
IDEs
CodeSandbox
Cloud dev environments.
IDEs
GitHub Codespaces
VS Code in the cloud.
AI Code Assist
GitHub Copilot Free
Free tier for individuals.
AI Code Assist
Codeium
Free AI autocomplete.
AI Code Assist
Continue
Open-source IDE AI assistant.
AI Code Assist
Aider
AI pair-programmer in terminal.
AI Code Assist
Tabby
Self-hosted Copilot alt.
AI Code Assist
v0
Generate React UIs from prompts.
AI Code Assist
bolt.new
Prompt-to-full-stack app.
Models & Research
Hugging Face Hub
Largest open model registry.
Models & Research
Papers with Code
SOTA leaderboards + repos.
Models & Research
arXiv cs.AI
Daily AI preprints.
Models & Research
arXiv cs.LG
Machine learning preprints.
Models & Research
Kaggle
Datasets, notebooks, competitions.
Models & Research
Distill
Clear ML research explainers.
Models & Research
AI Index
Stanford's annual AI report.
Build & Deploy
Vercel
Edge hosting for full-stack.
Build & Deploy
Netlify
Jamstack hosting.
Build & Deploy
Cloudflare Workers
Free serverless at the edge.
Build & Deploy
Cloudflare Pages
Static + functions hosting.
Build & Deploy
Fly.io
Run servers near users.
Build & Deploy
Railway
Deploy from a Dockerfile.
Build & Deploy
Render
Managed web services free tier.
Build & Deploy
Coolify
Self-host PaaS — OSS.
Build & Deploy
Dokploy
Open-source Vercel alternative.
Build & Deploy
Caprover
Self-hosted PaaS.
Build & Deploy
Docker Docs
Containers reference.
Build & Deploy
Kubernetes Docs
Container orchestration.
Build & Deploy
Terraform
Infra-as-code.
Databases
Supabase
Postgres + auth + storage.
Databases
Neon
Serverless Postgres free tier.
Databases
Turso
Distributed SQLite at edge.
Databases
Upstash
Serverless Redis + Kafka.
Databases
PlanetScale
Serverless MySQL.
Databases
Convex
Reactive backend.
Databases
Drizzle ORM
TypeScript SQL ORM.
Databases
Prisma
Type-safe ORM for Node.
Databases
Kysely
Type-safe SQL query builder.
Databases
PostgreSQL Docs
The gold-standard SQL DB.
Databases
SQLite Docs
World's most used DB.
Databases
Redis Docs
In-memory data structure store.
Dev Reference
MDN Web Docs
The web platform reference.
Dev Reference
DevDocs
Fast offline-ready API docs.
Dev Reference
Can I Use
Browser support tables.
Dev Reference
Regex101
Regex tester + explanations.
Dev Reference
Bundlephobia
Cost of npm packages.
Dev Reference
Crontab Guru
Cron expression editor.
Dev Reference
DNS Checker
Global DNS propagation check.
Dev Reference
JWT.io
Decode + verify JWTs.
Dev Reference
Explainshell
Explain any shell command.
Dev Reference
tldr pages
Simplified man pages.
Dev Reference
Wireshark
Network protocol analyzer.
Dev Reference
RegexLearn
Interactive regex tutorial.
Design
Figma
Collaborative UI design.
Design
Penpot
Open-source design platform.
Design
Excalidraw
Hand-drawn diagrams.
Design
tldraw
Infinite collaborative canvas.
Design
Tabler Icons
4000+ free SVG icons.
Design
Lucide
Beautiful, consistent icons.
Design
Heroicons
Tailwind's icon set.
Design
Phosphor Icons
Flexible icon family.
Design
Fontsource
Self-host any Google Font.
Design
Coolors
Color palette generator.
Design
Realtime Colors
Preview a palette live.
Design
Unsplash
Free stock photography.
Observability
Sentry
Error monitoring.
Observability
PostHog
Product analytics, OSS.
Observability
Plausible
Privacy-friendly analytics.
Observability
Umami
Open-source web analytics.
Observability
Grafana
Dashboards + observability.
Observability
Better Stack
Logs + uptime + status pages.
Observability
OpenTelemetry
Observability standard.
Testing & API
Postman
API client + collections.
Testing & API
Hoppscotch
Open-source API client.
Testing & API
Bruno
Git-friendly API client.
Testing & API
Insomnia
REST/GraphQL client.
Testing & API
Playwright
End-to-end testing.
Testing & API
Vitest
Fast Vite-native testing.
Testing & API
Jest
Battle-tested JS test runner.
Testing & API
k6
Load testing scripted in JS.
Testing & API
Cypress
E2E testing in the browser.
Security
OWASP Top 10
Web app security risks.
Security
Have I Been Pwned
Check if your data is leaked.
Security
Snyk Vulnerability DB
Open-source vuln database.
Security
Bitwarden
Open-source password manager.
Security
Let's Encrypt
Free SSL/TLS certificates.
Security
SSL Labs
Test your SSL config.
Learn
freeCodeCamp
Cert-track curriculum, free.
Learn
fast.ai
Practical deep learning.
Learn
DeepLearning.AI
Short AI courses.
Learn
Roadmap.sh
Step-by-step role roadmaps.
Learn
The Odin Project
Full-stack web curriculum.
Learn
CS50
Harvard's CS intro, free.
Learn
MIT OCW
MIT lecture materials.
Learn
Exercism
Code practice with mentors.
Learn
LeetCode
Algorithm practice.
Learn
Codewars
Kata-style code practice.
Learn
Frontend Masters
Expert frontend courses.
Learn
System Design Primer
Free system design guide.
Learn
Refactoring Guru
Patterns + refactoring.
Stay Current
Hacker News
The tech hallway.
Stay Current
Lobsters
Quality-first tech discussion.
Stay Current
GitHub Trending
What devs star today.
Stay Current
Product Hunt
What launched today.
Stay Current
Stratechery
Tech strategy analysis.
Stay Current
Import AI
Weekly AI digest.
Stay Current
The Sequence
ML research, distilled.
Stay Current
Stack Overflow Blog
Engineering essays.
Stay Current
Changelog
Developer news podcasts.
AI Media
DALL·E
OpenAI's image model.
AI Media
Stable Diffusion
Open image generation.
AI Media
Midjourney
Generative art platform.
AI Media
Suno
AI music generation.
AI Media
ElevenLabs
Realistic AI voices.
AI Media
Whisper
Open speech-to-text.
AI Media
Runway
AI video editing.
Mobile
Expo Docs
Universal React Native apps.
Mobile
React Native
Cross-platform RN docs.
Mobile
Flutter Docs
Google's cross-platform UI.
Mobile
Swift Docs
Apple's modern language.
Mobile
Android Dev
Android dev reference.
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