1. Free download of academic materials
Foreign literature: http://sci-hub.cc/
Foreign books: ①http://gen.lib.rus.ec/search.php②https://www.nap.edu/③https://www.hathitrust.org/
2. Scientific Knowledge Blog
Science Space: http://spaces.ac.cn/index.php
3. Programming languages
Python official website: https://pypi.python.org/pypi
Python Toolkit Download: http://www.lfd.uci.edu/~gohlke/pythonlibs/
Matlab→python NumPy Library: http://www.360doc.com/content/14/0418/20/9482_370138983.shtml
Python Scientific Calculations: http://old.sebug.net/paper/books/scipydoc/index.html
Wxpython Study: https://wiki.wxpython.org/Getting%20Started
Matlab source code Download: http://cn.mathworks.com/matlabcentral/
C Language Library function parsing: http://www.cplusplus.com/reference/
Various language source code download: https://github.com/search?q=&ref=searchresults&type=Repositories&utf8=%E2%9C%93
Online Program Brush title: http://www.nowcoder.com/
Program output Standardized format: http://pro.jsonlint.com/
4. Academic Tools
Online Course: ①coursera:https://www.coursera.org/② Geek College: Http://www.jikexueyuan.com/?v=b
UCI data set: https://archive.ics.uci.edu/ml/datasets.html
Latex Conversion of mathematical symbols: http://www.mohu.org/info/symbols/symbols.htm
Online Equation Editor: http://webdemo.myscript.com/views/math.html
Online Programming: http://online.anycodes.cn/en/
5. Patents
Patent search: http://www.patentstar.cn/My/SmartQuery.aspx
Patent download: http://www.drugfuture.com/cnpat/cn_patent.asp
Various Tools website Summary