免費的 UML 繪圖軟件

State-of-the-art online UML maker for all software teams

Finding a Free UML Drawing Software?

No one wants to waste time learning complicated software tools. Visual Paradigm Online is definitely the most intuitive, not to mention powerful, easy-to-use UML diagram tool among all. If you want to create UML diagrams in quick, you've come to the right place. With Visual Paradigm Online, diagrams can be drawn with drag-and-drops. The Free Edition of VP Online is free and lets you access not only UML tool but also ERD tool and Organization Maker, for non commercial use. You can draw unlimited number of diagrams and shapes and output them into images.


Easily draw beautiful class diagrams

完全免費

Free UML tool for personal use:

  • No limited number of diagrams and shapes
  • Non-restricted accessing period
  • No ad

簡單易用

Online drawing can be easy and fun. Here are some of the UML editing features included in our intuitive UML diagram tool:

  • Drag and drop interface
  • Connectors attached (no separate apart)
  • Format Copier: Instant format copying
  • Keep a lib of shape patterns for reusability
  • Several hundreds of diagram templates

高品質的設計

A full set of diagram editing features is available for you to draw the diagram you need.

  • Precise shape positioning with alignment guide
  • Insert your own image, URL and text
  • Range of shape and line format options
  • Rotatable shapes and captions
  • Group, align and distribute shapes
  • Auto shape formation from item list


然而,這並非全部……

然而,這並非全部……
  • 終身免費
  • 沒有圖表數量限制
  • 沒有圖形數量限制
  • 全方位繪圖工具:ERD工具、UML工具、組織結構圖工具、平面圖工具、ITIL,商業概念圖
  • 無縫升級至付費版本以獲取更多更強大的圖表類型和功能
  • 全面兼容各款瀏覽器,並適用於所有作業系統 - Mac, Windows, Linux
  • 拖拽式操作,無需學習和培訓就能輕鬆繪製出專業的圖表。
  • 多種多樣的格式選項(形狀和線條,純色和漸變色),40多種連接器類型,RTF標題,字體選項,陰影效果等
  • 用自己的形狀繪製自己的圖。
  • Visio 圖表和模板導入
  • 兼容多種文件格式,一鍵導出 PNG,JPG,SVG,GIF,PDF,方便您與他人進行分享
  • 數百個圖例和模板,讓您輕鬆創建出各種專業圖表
  • 將圖表儲存至 Google 雲端硬盤
  • 輕鬆地將文字,外部圖像和網頁鏈接嵌入到圖表中

親自體驗,更證美好

只需瀏覽下面的UML 圖表示例,點擊開啟圖表打開編輯器,您將親眼印證我們所說的一切 。

創建屬於您的圖表

沒有限制,一按啟用。


開始使用