LibreCAD 是一款開放原始碼的免費 2D CAD 繪圖軟體，也是一款跨平台的軟體，支援包括 Windows, Mac OS X 和 Linux (Debian, Ubuntu, Fedora, Mandriva, Suse, …) 在內的所有主要作業系統，而且提供逾 20 種語言版本讓使用者選擇。LibreCAD 的圖檔格式，即副檔名為 DXF、JWW，且可以將圖形匯出為 SVG、TIF、BMP、XBM、XPM、PPM、JPG、PNG 等圖檔，對於一般的使用者來說，這些 2D CAD 的製圖功能，應該已經足夠。
重要諸元：
§ 作業系統：Windows 7/8/10/11
§ 官方網站下載頁面
§ 檔案下載
LibreCAD 原文簡介：
LibreCAD is a fully comprehensive 2D CAD application that you can download and install for free. There is a large base of satisfied its users worldwide, and it is available in more than 20 languages and for all major operating systems, including Microsoft Windows, Mac OS X and Linux (Debian, Ubuntu, Fedora, Mandriva, Suse …). You can download, install and distribute this application freely, with no fear of copyright infringement.
Features
The software is a feature-packed and mature 2D-CAD application with some really great advantages:
- It’s free – no worry about license costs or annual fees.
- No language barriers – it’s available in a large number of languages, with more being added continually.
- GPLv2 public license – you can use it, customize it, hack it and copy it with free user support and developer support from our active worldwide community and our experienced developer team.
- This application is an Open Source community-driven project: development is open to new talent and new ideas, and our software is tested and used daily by a large and devoted user community; you, too, can get involved and influence its future development.
常見問題（FAQ）
Q：LibreCAD 是免費的嗎？
A：LibreCAD 提供免費版本，是否包含付費功能或進階版本，仍需以官方最新說明為準。
Q：LibreCAD 支援哪些作業系統？
A：支援 Windows, macOS, Linux。
Q：LibreCAD 適合哪些人使用？
A：適合 需要 CAD 軟體 功能的使用者，也適合想尋找相關替代工具的讀者。
Q：使用 LibreCAD 前要注意什麼？
A：建議先確認版本、系統相容性與授權方式，並優先從官方網站或可信來源下載。