| Detexify LaTeX handwritten symbol recognition (kirelabs.org) | 画出特殊字符，给出对应的latex表达 |
| Create LaTeX tables online – TablesGenerator.com | 绘制latex 表格 |
| GitHub - google-research/arxiv-latex-cleaner: arXiv LaTeX Cleaner: Easily clean the LaTeX code of your paper to submit to arXiv | 清理latex的格式，使之能上传至arxiv，并被arxiv的老编译器编译 |