Proteus also has a built-in schematic editor and PCB layout editor, making it a complete electronic design solution. In addition, Proteus supports IoT(Internet of Things) projects which is not available in LTSpice. It also allows for the simulation of microcontroller-based circuits, which is not possible in LTSpice. Proteus has a large library of components and models, including microcontroller models for popular microcontrollers such as Arduino, PIC, AVR, Raspberry PI and ESP8266. It is a commercial software and offers a wide range of features for electronic design, including circuit simulation, PCB layout, and microcontroller simulation.

Proteus, on the other hand, is a circuit simulation and PCB design software developed by Labcenter Electronics. It's also available for multiple platforms such as Windows, Mac and Linux. Additionally, LTSpice has a powerful built-in waveform viewer, which can be used to analyze the simulation results. It also has a user-friendly interface, making it easy to use for both beginners and experienced users. It has a large library of models and components, allowing users to simulate a wide variety of circuits. It is a free, powerful and easy-to-use tool for simulating analog circuits. LTSpice is a high-performance SPICE simulation program developed by Linear Technology, now part of Analog Devices. LTSpice and Proteus are both popular circuit simulators, but they have different features and capabilities.

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