Autodesk EAGLE is described as 'electronic design automation (EDA) software. Enabling printed circuit board (PCB) designers to seamlessly connect schematic diagrams, component placement, PCB routing, and comprehensive library content' and is an app in the Development category. There are more than 25 alternatives to Autodesk EAGLE for Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Fritzing. It's not free, so if you're looking for a free alternative, you could try KiCad or LibrePCB. Other great apps like Autodesk EAGLE are EasyEDA (Free), OrCAD (All Products) (Paid), gEDA Project (Free, Open Source) and Altium Designer (Paid).
The gEDA project has produced and continues working on a full GPL'd suite and toolkit of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.