Free online tools for developers, sysadmins, and curious minds
NetInfo is a collection of free online tools designed to help with everyday tasks — looking up IP addresses, generating passwords, checking DNS records, searching usernames, encoding and decoding data, and more. No signups, no paywalls, just tools that work.
We started building this site because most online tools are either buried in ads, require registration, or are painfully slow. Our goal is to provide fast, clean, genuinely useful tools that you can rely on without jumping through hoops.
IP lookup, DNS checker, port scanner, whois lookup, email validator, and more
Password generator, hash generator (MD5, SHA1, SHA256), data encoders/decoders
Practical tutorials for Ubuntu, Nginx, networking, and common sysadmin tasks
Lightweight games you can play directly in your browser — no downloads needed
Every tool page on NetInfo includes a built-in AI assistant powered by a local Llama model. You can ask questions about OSINT, Linux, networking, and how to use the tools without leaving the page. No data is sent to external services.
We got tired of bookmarking 20 different tool sites that each did one thing okay but nothing great. NetInfo is our attempt to build a single place where you can find the tools you need, use them quickly, and get back to work. It's free, it's fast, and we keep adding to it.
Have a suggestion, found a bug, or want to request a tool? Reach out at tkump57@gmail.com.
Last updated: September 2026