Chemistry

1. Organic Chemistry Data & Info (ASC Org Chem Division)
   https://organicchemistrydata.org

2. Science of Syntehsis by Thieme Chemistry (aka Houben-Weyl)
   https://science-of-synthesis.thieme.com/app/toc
   https://science-of-synthesis.thieme.com/app/training/resource

3. Resources (Trauner Group)
   https://www.traunergroup.org/resources

4. Problems of Reaction Mechanism (Yokoshima Group)
   https://www.ps.nagoya-u.ac.jp/lab_pages/natural_products/problem.html
   https://www.ps.nagoya-u.ac.jp/lab_pages/natural_products/problem-e.html

5. Special Issues of Accounts
   https://pubs.acs.org/page/achre4/special-issues/index.html

Open Courses

1. Organic Reaction Mechanisms I and II by D. Van Vranken
   https://open.uci.edu/courses/chem_201_organic_reactions_mechanisms_i.html
   https://open.uci.edu/courses/chem_202_organic_reaction_mechanisms_ii.html

2. Lecture Collection of G. Dyker
   https://www.ruhr-uni-bochum.de/oc2/dyker/Vorlesungen_1.html

3. Course Notes by E. E. Kwan
   https://ekwan.github.io/notes.html

LaTeX, Fonts

1. Latest TeX Live Full Images
   https://ctan.org/tex-archive/systems/texlive/Images?lang=en

2. FreeSans
   https://ftp.gnu.org/gnu/freefont/freefont-ttf-20120503.zip

   Best free alternative for Helvetica. Arial and Helvetica are interchangeable in many scenarios, but Arial looks less balanced at larger font sizes.

3. XITS Math
   https://github.com/aliftype/xits/

   A math font is a must-have component for anybody who is crafting a STEM manuscript.
   ttf-format of XITS Math (resembles the design of Times New Roman):
   https://ekdc11.github.io/share/XITSMath-Regular.ttf

4. MathTime Professional 2 Lite (MTPro2 Lite)
   https://pctex.com/mtpro2.html#MTPro2_Lite/
   https://ekdc11.github.io/share/mtp2lite.zip

   LaTeX only math font, which resembles Times and has lots of math related symbols and features. The lite version is free of charge.

5. Microsoft Web Core Fonts & Cleartype Fonts
   https://sourceforge.net/projects/mscorefonts2/

   Microsoft allowed redistribution of the so-called webcore fonts, which caused even wider spreading of fonts like Arial, Times New Roman, Courier New, etc.