在线网站图标生成器（一站式全功能）
Just provide your original site logo (possibly simplified to best suit a favicon), optionally your main colors and your app
二维图形
关于计算机二维图形、色彩和艺术的一切
免费词云生成器
Free, no registration and full of features wordcloud generator. Of course you can select the texts, but also fonts, deformations/warping,
在线 SVG 优化器
Just upload any SVG file or paste its code, and you’ll get many tools to optimize and simplify your original
SVG消毒剂
SVG format can embed almost any code, even executable. So unless you designed it yourself, to verity it before uploading
Plotly 图表工作室
An excel like sheet, but with much more graphics power, for any king of charts and combinations of it. Steep
EasyEDA电子电路设计器
Perfect tool to online design electronic circuits (PCB). Exists online (registration is required) or downloadable standalone Windows, Linux and macOS.
WBO在线白板
Free online collaborative/shared whiteboard: you can draw either on the public whiteboard, accessible to all. For curiosity only, but you
Excalidraw 免费在线白板
这是最著名的免费在线协作白板之一，谷歌和 Meta 等公司也将其用于自己的应用程序或满足自身需求。
Dustsim 免费灰尘/粒子模拟器
An extremely addictive dust and particles simulation: add particle sources, attraction or repulsive fields (that you can move manually live
曼德布罗集探索者
Walk through an interactive 2D view of 5 types of fractals and variants: Mandelbrot, Burning ship, Tricorn, Cubic Mandelbrot, Cubic