Blogs

Maths:

Not maths:

Not blogs

Giovanni Bazzoni: nice notes.
Olivia Caramello: a category theory superstar.
Edoardo Niccolai: intellectual and cat lover who wrote amazing (in an ambivalent sense) mathph notes.
Garrett Lisi: CEO of E8 quasicrystal quantum gravity.
Richard Montgomery: CEO of spinning cats.
John W. Milnor
May
Applied Physics: working to send humanity into the warp age.
Luca Guido Molinari Laurent Lafforgue Euler Circle

History

Earliest Known Uses of Some of the Words of Mathematics
MacTutor History of Mathematics Wtf happened in 1971?: short answer is “Sergio Cacciatori was born.”.
Landau & Lifschitz in Russian

Amanuenses

Old Books To New
TeXromancers
the-eye.eu

Hiking

Diska: info on hiking in Lombardia.

Based viXra users

O. Kurwa
El Arcón

Based GUTs

This Island Universe: “the Universe is not a unitary system”.
The Wolfram Physics Project: “everything is a cellular automata”
Quantum Gravity Research: maybe a scam, but, you know, maybe all quantum gravity’s a scam.
Geometric Unity
Quantized Inertia

Wikis

Stacks Project
ncatlab
Topospaces
The Manifold Atlas Project
RationalWiki
Awesome: aggregates “Awesome” lists, which in turn aggregate nice links of tools and projects and so on and so on.

Grammars

Japanese: Tae Kim's Guide to Learning Japanese
Polish: A concise Polish grammar
Russian: A basic modern Russian grammar

LDS

Tokens and Signs: got a thorough analysis of Come and Follow Me.
LDS Discussions: got a thorough analysis of Saints.
Smormoni: main Italian archive of Mormon-related red pills.