MegaCAD (the parent company) transitioned to a Windows-native software called "Splan Professional" and later "Splan 3D." They no longer support or distribute the DOS-based Splan 80. All official support ended around 2005. Consequently, any website promising a direct "splan80.exe" or "setup.exe" is hosting abandonware—software whose copyright is technically still valid but is no longer sold or supported.
The latest version introduces several quality-of-life improvements over sPlan 7.0: splan 80 download link
is the latest version of the popular schematic editor developed by ABACOM. It is a commercial software tool used for creating professional circuit diagrams, and there is no legal "free" full version available for download. Official Download and Purchase sPlan 8
Do not confuse this with "Splan Visitor Management," which is an entirely different AI-driven enterprise security platform. sPlan 8.0 - ELECTRONIC-SOFTWARE-SHOP sPlan 8.0 - ELECTRONIC-SOFTWARE-SHOP