Description: KeyCDN Tools is a free suite of web performance and SEO tools to help website owners optimize their sites. It includes tools to analyze page speed, check security settings, test mobile-friendliness, and more.
Type: software
Description: QUCS (Quite Universal Circuit Simulator) is an open-source electronics circuit simulator software. It allows you to set up electronic circuits and simulate them. Features include DC, AC, S-parameter, harmonic balance analysis, etc. It has a GUI for schematic capture and simulation control.
Type: software
Pricing: Free