My stack

If you wish to explore specific libraries and address the various professional needs you will encounter:

Search on Google with "Awesome library Github."
- Ex: If you want to see design systems: Awesome Design System GitHub: https://github.com/alexpate/awesome-design-systems
- Ex: If you are looking for open-source - self-hostable libraries: Awesome Self-hosted GitHub: https://github.com/awesome-selfhosted/awesome-selfhosted
If you have any doubt, type "what's the best framework js, reddit": you will have an endless war of people on Reddit who absolutely want to be right. It's very interesting because you see the hardcore version of each extreme of everyone's thoughts on each framework/technology. You can do the same thing for all your future choices and doubts; it works very well.
I love "Roadmap.sh," which provides directions to take.
Check "app.daily.dev" for tech monitoring.
Browse on YouTube; there are lots of great tech YouTubers, especially among Americans/Brits.

My Tech Stack

This section gathers the tools and libraries I use!

Coolify - Self-hosted PaaS alternative to Vercel/Netlify
Dokploy - Open-source PaaS with Docker (alternative to Coolify)
Homer - Dashboard for self-hosted services
Cloudflare DNS - DNS management -> my domain names are on Cloudflare
Cloudflare R2 - S3-compatible storage (free up to 15GB) -> we put our Coolify saves and everything else on it; it works very well, and it's very cheap storage
Cloudflare Tunnel - Expose local services -> usable to expose your localhost to the web, very useful for using webhooks.
Ngrok - Tunneling for local development
Svix - Webhooks as a service

Better Auth - Modern auth library -> THE BEST solution for custom in-app auth
Clerk - Authentication & user management -> if you want to do auth in 5s, with an ultra-effective and efficient service! My little darling
Keycloak - Open-source identity management -> Open-source SSO!
Infisical - Secret management platform -> all passwords in one place, for applications, allows for .env rotation and everything else, in the same place, without having to copy/paste .env files and all that! (super useful for teams!)
Vaultwarden - Self-hosted Bitwarden server -> allows for password management (like Dashlane, for example)
CrowdSec - Collaborative security engine -> alternative to fail2ban, allows for security on server access, banning spam, and all that

Sentry - Error tracking & performance monitoring -> allows us to track errors in our apps
Umami - Privacy-focused analytics -> Google Analytics but better!
Metabase - Open-source BI & analytics platform -> Give a great dashboard for salespeople so they can check DB data without bothering the devs! (a real banger)
Kuma Uptime - Self-hosted monitoring -> allows managing an uptime page and tracking different apps, knowing what's running and what's down
BetterUptime - Uptime monitoring & status pages -> like Kuma, but SaaS (paid)
LogRocket - Session replay (already mentioned)

Vercel AI SDK - AI toolkit for applications -> perfect for managing requests to AIs
NextLLM - LLM integration framework -> to make your own ChatGPT-like interface
n8n - Workflow automation -> automation
Postiz - Social media scheduling -> manage lots of social networks and do multi-posts / multi-networks

Shadcn UI - Re-usable components -> my favorite design
21st.dev - Premium UI components -> to find already-made bangers in terms of design, allows starting on beautiful foundations!
ReactBits - Lots of super stylish components!
Acertinity - Lots of super stylish components!
TailwindCSS - Utility-first CSS framework (my favorite too)
Tailwind UI - Official Tailwind component library -> paid Tailwind library
Headless UI - Unstyled accessible components -> great utility library!
Radix UI - Low-level UI primitives -> likewise, great utility library!
Chakra UI - Same -> lots of content!

Motion - Modern animation library (Framer Motion) -> crazy animation
GSAP - Professional animation library -> likewise, lots of animations
Lottie - JSON-based animations -> very advanced animations, you can do After Effects -> web
Rive - Interactive vector animations -> premium banger animation ++++++, Rust, etc.
AOS - Animate On Scroll library -> block and page transitions
Three.js - 3D graphics library -> 3D, but super difficult
React Three Fiber - React renderer for Three.js -> improvement of Three.js

Zod - TypeScript-first schema validation - advanced data validation, good practice
Valibot - Lightweight alternative to Zod - very nice too

Playwright - End-to-end testing (the very best for me)
Cypress - E2E testing framework
Lighthouse - Performance auditing
Unlighthouse - Large-scale Lighthouse scanning - lots of Lighthouse scans on lots of pages at once
IBM Accessibility Checker - Accessibility verification -> super-unknown banger!
Wappalyzer - Technology profiler -> checks the technologies of a site/app

Prettier - Code formatter
ESLint - JavaScript Linter
Biome - Alternative to Prettier + ESLint (looks like it's going to be insane!)
Husky - Git hooks -> execution of git hooks, scripts when pushing/committing
Renovate - Dependency updates automation -> automatic dependency updates
Lazygit - Terminal UI for Git (Git in terminal mode but more stylish)
Lazydocker - Terminal UI for Docker (Docker terminal but more stylish)
Insomnia - API client
Bruno - Open-source API client -> manage API calls, but save directly to files, making API usage versionable! (shareable tests)
Neovim - Extensible text editor -> if you like graphics cards (hardcore version of Vim / an IDE)
Tmux - Terminal multiplexer -> multiple CLIs in a single window
Obsidian - My note-taking tool!
Syncthing - File synchronization! (I have a VPS at Netcup that syncs my files between my desktop PC, my laptop, and my server, only on certain folders) €5, I have a multi-drive without bugs

Luxon - Date & time library
Nuqs - Type-safe URL search params -> to be used for mirroring useState in a page's parameters.
Number Flow - Animated number transitions -> it makes pretty numbers
Remark - Markdown processor -> Markdown to JS/HTML