7-Zip
Igor Pavlov
Download from the vendor
www.7-zip.org
A file compression and extraction tool that handles almost every format — ZIP, 7z, RAR, TAR, ISO and more. The 7z format compresses especially well, which helps when sending large models and drawing sets, and archives can be encrypted with AES-256. It integrates into the Windows right-click menu.
Ratings & Reviews
| Licence type | Completely Free, Open Source |
|---|---|
| Licence terms | Open-source licence (LGPL). Free for any purpose including commercial work, with no time limit, no registration and no licence key. |
| Platforms | Windows |
| Engineering field | Architecture, Civil Engineering, Electrical & Electronics, Mechanical Engineering |
| Tool type | General Productivity |
| Vendor site | www.7-zip.org |
This link goes to the vendor site. EngiFree hosts no installers and distributes no cracked versions.
Last verified: 2026-10-03
