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8gwifi.org is a free all-in-one multi-tool web app with 200+ tools that run right in your browser — cryptography & security, DevOps & networking, mathematics, physics, chemistry, biology, electronics, finance, and exam prep for olympiads, AMC/AIME, IIT/JEE & SAT. Most tools work instantly, with no account at all.
Optional “Sign in with Google” unlocks the built-in AI Assistant features (e.g. PGP AI and SSH AI). When you choose to sign in, we use only your basic Google profile — your email, name, and profile picture — solely to identify your account so your AI usage, quota, and billing follow you between visits. We never request Gmail, Drive, Calendar, or Contacts, and we never sell or share your data.
By using this site you agree to our Privacy Policy and Terms of Use.
8gwifi.org is a free, all-in-one multi-tool web app bringing together 200+ tools across security, engineering, science, and education — all on one site, all in your browser. We exist to give developers, students, teachers, sysadmins, scientists, and security folks a single place to encrypt messages with PGP, generate SSH/TLS keys, decode JWTs, compute subnet masks, design & simulate electronics circuits, balance chemistry equations, model biology and physics, run math calculators, prep for olympiads and AMC/AIME/IIT-JEE/SAT exams, render TikZ/LaTeX, and dozens of other tasks that would otherwise need a separate desktop app or a login-walled SaaS.
Sign-in is completely optional. Every tool works without it. You only need to sign in if you want to use the built-in AI Assistant features (e.g., PGP AI on the encrypt/decrypt page, SSH AI on the key-generator page).
What we read from your Google account when you sign in:
email — to identify your AI-usage account so quotas, billing, and chat history stay attached to you across sessions.profile (name + picture) — to personalize the chat UI (e.g., show your name on your messages).openid — the standard identity assertion used to perform the sign-in.What we never request: Gmail, Google Drive, Google Calendar, Contacts, YouTube, or any other scope. We only ask for the minimum that lets the AI Assistant know who you are.
Browse our collection of free, professional tools organized by category
SSL/TLS scanners, certificate management, JWT/JWS tools, keystores, and comprehensive security utilities.
PGP encryption, decryption, key generation, signing, verification, and comprehensive PGP utilities.
Kubernetes generators, Docker Compose builders, Ansible playbooks, and infrastructure automation.
Encrypt, decrypt, hash, and sign data using industry-standard algorithms like AES, RSA, PGP, and more.
DNS lookup, IP tools, port scanning, subnet calculators, and comprehensive network diagnostics.
Share files and messages securely with encryption, password protection, and temporary links.
Cryptocurrency and blockchain development tools for Ethereum, HD wallets, and key generation.
Convert between formats: Base64, Hex, JSON, YAML, XML, CSV, URL encoding, and more.
PDF tools, QR codes, hex editor, text comparison, URL shortener, and utility tools.
EMI calculators, compound interest, stock profit calculations, and financial planning tools.
Periodic table, molecular geometry, equation balancer, stoichiometry, thermochemistry, and electrochemistry tools.
Cell Atlas 3D — 12 interactive cells with every organelle clickable, real microscopy photos, AI tutor, slicing-plane cross-section. Plant, animal, neuron, sperm, virus + 7 more.
NCERT solutions, physics simulators, chemistry tools, and math calculators for students.
Circuit simulator with AI, Arduino & ESP32 emulator, and digital logic simulator with truth tables and K-maps.
AI video transcription and translation in 90+ languages. Export plain text, SRT, or VTT subtitles. No signup.
Lighthouse audits with AI fix suggestions, AI SEO checker for 79+ issues, structured-data validator. Core Web Vitals & accessibility.
Capture-the-Flag practice generators for crypto, forensics, reverse engineering, RSA, and steganography. Parameterised difficulty.