⚡ Built by Arju Singh · Free for everyone

Everything You Need

One vault for the AI, coding & career resources, free LLM API keys, and hand-picked tools I actually use. No sign-up, no paywall — take whatever helps.

Browse the Library Explore the Links
0
Resources
Curated Links
234+
Free AI Models
What's inside

Three things, all free

Everything here is curated and kept up to date — pick whatever moves your work forward.

📚

The Library

A vault of guides, prompt packs, roadmaps, cheat sheets and templates across AI, Claude, coding, design & careers — all free to download.

82 resources · 11 categories
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Free LLM API Keys

Direct links to working API keys for 234+ free models across 25 providers — Gemini, GPT, Claude, Llama, DeepSeek & more. No credit card.

234+ models · 25 providers
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Links

Hand-picked websites, GitHub repos, Google Docs, Notion pages & communities — separated by type so you find things fast.

Who built this

About Arju Singh

AS

Arju Singh

Software Engineer · Generative-AI Engineer

I'm a software engineer who builds and ships end-to-end products — across the MERN stack, Flutter and TypeScript — and wires LLMs (Claude, Gemini, OpenAI), the Model Context Protocol, and CI-driven delivery into real product workflows. I've shipped across rental discovery, legal tech, pet care, food-health, security tooling and AI agents. Founder & CEO of PetsCare.Club (100+ active users), taught 60+ developers as a software instructor, and interned with the Government of India (MoHUA) on smart-city dashboards. B.Tech in Information Technology, GJUS&T Hisar. This site is where I keep everything useful I've collected — and give it away free.

React / Next.jsNode / ExpressFlutterTypeScriptPython LLM APIsMCPPrompt EngineeringFirebase / SupabaseOWASP / Security three.jsDocker · CI/CD

SentryScan

Security

Full-stack web security auditor — OWASP Top 10, TLS/headers, headless-Chromium rendering, secret & dependency scanning. Node/Express + Playwright, CI-wired.

Jarvis

AI Agent

Voice assistant that runs online or fully offline — Whisper + Claude/ElevenLabs online, Ollama (Qwen) + Piper offline, with MCP tools & long-term memory.

FoodFat

Flutter App

Scans packaged-food barcodes/labels and returns a 0–100 health score, NOVA level & additive risk. Open Food Facts + Claude Vision fallback.

MarketStack

AI Marketing

Ingests a GitHub repo + domain and runs 41+ marketing skills (CRO, SEO, ads, 90-day GTM) grounded in the real product, generated by Claude.

Brandio

Social Toolkit

Self-hosted social-media suite — AI backgrounds, template post/caption generation, and scheduled publishing to Meta, X & LinkedIn. Dockerized microservices.

PetsCare.Club

Founder

Live pet-care marketplace connecting owners with vets & groomers — booking, community, provider dashboards. Scaled to 100+ users.

FAQ

Frequently asked questions

Do I need to sign in?
No. There are no accounts and no sign-up. The Library, Free LLM APIs and Links are fully open, and every resource downloads directly — no login, no email, no paywall.
Is everything really free?
Yes. Every resource, API link and tool here is free. No credit card, no subscription.
Who is this for?
Anyone building with AI or breaking into tech — developers, founders, job-seekers and creators.
Can I reach Arju?
Yes — via arjusingh.com, LinkedIn, GitHub, or email.