Introduction

Signex is an open-source EDA tool developed by Swedish company Alp Lab AB, built with Rust and featuring GPU-accelerated rendering for an Altium-like user experience. It uses native .snxsch/.snxpcb file formats based on TOML+TSV, which are 5x smaller than JSON and support Git line-level diffing. Positioned as a daily driver for hardware engineers, Signex offers a free Community edition and a Pro edition with AI capabilities, aiming to bridge the gap between expensive proprietary software and limited open-source tools.

Screenshots

Features

Native .snxsch/.snxpcb formats 5x smaller than JSON
Altium-like UI with dockable panels and floating toolbars
60fps GPU rendering with Vulkan, Metal, and DX12 support
Built-in themes including Altium Dark and Catppuccin Mocha
11 ERC checks with cross-sheet hierarchical validation
Command-driven architecture for Signal AI integration