Description: Matrix.org is an open source, decentralized communication protocol and network focused on secure and private communications. It allows users to communicate with each other on different platforms via chat, voice, video, etc.
Type: software
Pricing: Open Source
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