**KiCad**
KiCad is an open-source PCB design tool that includes a Schematic Capture, PCB Layout, Gerber File Viewer, and more. It is supported by a vibrant community, offering features that are competitive with commercial software solutions.
- Pros: Free, growing community support, runs on multiple platforms, no restrictions on board size or pin count.
- Cons: Steeper learning curve for beginners, lacks in some advanced simulation features.
- Cost: Free for both personal and commercial use.
- Relevance: Highly relevant for both hobbyists and small-to-medium businesses.
- Device Support: Windows, macOS, Linux.