366 Free Engineering Tools

Browser-Based Tools for Engineers

366 free tools across 28 engineering verticals — DevSecOps, FinOps, Kubernetes, CI/CD, data engineering, observability, and more. Everything runs locally in your browser.

No data is transmitted — everything runs locally

366Tools

28Verticals

316Example pages

0Cookies

Featured tools

Error Budget Calculator

Compute SLO error budget, burn rate, and projected window-end status.

MTTR Calculator

Mean time to resolution from incident counts and detect/resolve durations.

Cluster Capacity Calculator

Size a Kubernetes cluster from pod count, resource requests, and HA headroom.

Connection Pool Calculator

Size a Postgres connection pool from QPS, query duration, and max_connections.

Cloud Waste Calculator

Estimate monthly cloud waste from idle resources and oversized instances.

Password Entropy Calculator

Place a password's entropy on the distribution of real-world leaked credentials.