free4dev is a free collection of developer tools built for backend engineers, AI engineers, DevOps engineers, and software architects who value their time and their data.
Every tool runs entirely inside your browser. Nothing you paste, type, or upload is ever transmitted to a server — not ours, not anyone's. No accounts. No tracking. No data collection.
Why we built this
Most developer tools make you sign up, phone home with your data, or load slowly under the weight of unnecessary infrastructure. We built free4dev because the tools we reached for every day deserved better — instant, private, and permanently free.
What we stand for
Your data belongs to you. Every tool on free4dev is built to that standard — not as a feature, but as a constraint we don't compromise on. If a tool can't be built to run entirely in your browser, we don't build it.