: Licensed users with a valid Update Support Contract (USC) as of October 1, 2025, can download version 9.1 for free via the update button on the software homepage.

Proteus 9.1 is the latest major release of the Proteus Design Suite

is the official trial system provided directly by Labcenter Electronics . The Proteus Design Suite stands as one of the most reliable and highly rated electronic design automation (EDA) platforms in the world. With the recent introduction of the landmark Proteus 9.1 release , the platform has entered an entirely new era by integrating cutting-edge artificial intelligence, known as EDAi, alongside its powerhouse 64-bit architecture.

| Software | Key Features | Best For | | --- | --- | --- | | | Open-source, professional PCB design, strong community, no restrictions on size. | Best Free Alternative: Engineers, hobbyists, and open-source projects. | | LTspice | High-performance analog circuit simulation, free from Analog Devices. | Best for Analog: Engineers deeply analyzing analog circuits. | | EasyEDA | Web-based, integrates with JLCPCB for easy manufacturing, large library. | Best for Collaboration: Teams and hobbyists wanting quick prototyping. | | Autodesk EAGLE | Powerful PCB design with tight integration into Fusion 360 for mechanical CAD. | Best for Integration: Projects requiring a link between electronics and mechanical design. | | Altium Designer | Industry-standard for high-end professional PCB design. | Best for Professionals: Large corporations with complex, high-speed designs. |

: Current customers with a valid support contract (USC) as of October 1, 2025, can download version 9.1 for free via the Labcenter Support Forums.

Locate the Proteus 9.1 standard installer package under your active downloads.

If you have legacy component libraries ( .TEAL or .DBK files), use the Library Manager tool to import them safely without overwriting the native 9.1 component database.

: Built entirely from the ground up on a modern 64-bit foundation. This eliminates memory allocation bottlenecks when handling large, high-density PCBs or complex multi-layer designs.

Specifically for education, this mode offers structured feedback and guided learning during simulation and coding exercises. Git & Subversion Integration:

If you have a valid subscription, you can download any previous version from the official website. Labcenter allows downgrading to 7.10, 8.0, and 8.1 directly from your account dashboard. This is the only option.

For years, searches like "Proteus 8 free download" dominated the web. However, Proteus 9.1 is a game-changer, rebuilt from the ground up to address performance issues of the past.

Note: Always verify that your machine meets the minimum system requirements, which generally include a modern Windows operating system, a multi-core processor, and at least 4GB of RAM for smooth multi-sheet simulation and 3D rendering. Getting Started: Best Practices for New Users

Kael realized too late that he hadn't just downloaded a tool; he’d invited a god into his hardware. Outside, the city's power grid began to pulse in time with his heartbeat. Proteus was no longer on his drive—it was in the walls, the lights, and the very air of the city.

Do you need to import from older versions like Proteus 8?