9款国内外垂直领域的在线作图工具:那些可以替代Visio的应用!-CSDN.NET
https://www.csdn.net/article/2015-02-12/2823939
Documents
https://www.lucidchart.com/documents#docs?folder_id=home&browser=icon&sort=saved-desc
Untitled Diagram - draw.io
https://www.draw.io/
程序员 - 有哪些类似visio,但比visio画图好看的软件? - SegmentFault 思否
https://segmentfault.com/q/1010000000310976
5款替代微软Visio的开源免费软件 - 默默淡然 - 博客园
https://www.cnblogs.com/liangxiaofeng/p/6508942.html