Simplify documentation and avoid heavy tools. Open source Visio Alternative. Commonly used for explaining your code! Mermaid is a simple markdown-like script language for generating charts from text via javascript.
Rows - Create spreadsheets with app powers.
视频转成gif动图
在线视频解析
ChartCube - 在线图表制作工具
GeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers
