STEM

Science, mostly

• NASA - National Aeronautics and Space Administration.
• ESA - European Space Agency.
• ISRO - Indian Space Research Organization.
• What If Apollo 11 Failed? - An Undelivered Nixon Speech.
• Digital Einstein Papers
• The Newton Project - A comprehensive edition of all of Newton’s printed and unpublished writings.
• Newton Papers
• The Atlas of Moons
• Quantum Country
• The Encyclopedia of Science Fiction
• Periodic Table of Elements - LANL
• Quanta Magazine
• Scientific American
• Space.com
• ScienceMag
• iflscience
• CURIOSITY
• phys.org
• New Scientist
• ScienceAlert
• Futurism
• Popular Science
• JunkScience
• Quillette
• People
  • Preposterous Universe - Sean Caroll.
  • Backreaction - Sabine Hossenfelder.
  • How to become a Good Theoretical Physicist - Gerard 't Hooft.

Mathematics

• WolframAlpha
• Wolfram MathWorld - The Web's Most Extensive Mathematics Resource.
• The Pi-Search Page
• Pr∞fWiki
• Mathigon
• Better Explained - Finally understand math, don't memorize it.
• Things to Make and Do in the Fourth Dimension
• GIMPS: Great Internet Mersenne Prime Search - Collaborative project of volunteers who use freely available software to search for Mersenne prime numbers.
• Folding@home - Distributed computing project aimed to help scientists develop new therapeutics to a variety of diseases by the means of simulating protein dynamics.
• LMFDB - The L-functions and modular forms database.
• Mathematical Association of America
• Fermat's Library - Software to help illuminate academic papers.
• Brilliant paid
• Math Professor Quotes - The absurd things math professors say.
• Symbolab - Symbolab Math Solver.
• Symbolab Cheat Sheets - Algebra, Trigonometry, Calculus.
• What's Special About This Number? - What's Special About This Number?
• Annotated version of "What's Special About This Number?"
• The On-Line Encyclopedia of Integer Sequences (OEIS)
• Desmos Graphing Calculator
• Paul's Online Notes - Notes for classes that Prof. Paul Dawkins teaches at Lamar University.
• Real Not Complex - Discover incredible free resources to study mathematics.
• Cool Math Games
• The Fibonacci Quarterly
• Gravity and Levity
• Plus magazine
• People
  • Martin Gardner (Martin Gardner Centennial - Gathering 4 Gardner)
  • Buckminster Fuller
  • James Randi
  • Terrence Tao
  • Timothy Gowers's Weblog - Mathematics related discussions.
  • Acme Klein Bottle - Official store of the Klein Bottle Guy (Clifford Stoll).
  • 3blue1brown - Grant Sanderson.

Technology

Privacy

• WikiLeaks
• EFF Blog
• gnu.org
• DuckDuckGo Blog
• Tutanota Blog
• ProtonMail Blog
• Mozilla Blog
• Mozilla Hacks
• NordVPN Blog
• ExpressVPN Blog
• ethical.net
• PRISM Break - Opt out of global data surveillance programs like PRISM, XKeyscore, and Tempora.
• Restore Privacy
• Guard - Discover the hidden secrets in privacy policies.
• Stop Using Facebook
• That One Privacy Site
• Secure Messaging Apps Comparison

Blogs

• StackOverflow Blog
• Twilio Blog
• Coding Horror
• GitHub Blog
• Uber Engineering Blog
• Slack Engineering
• Netflix Technology Blog
• Netflix TechBlog
• Discord Blog
• YouTube Official Blog
• Grammarly Blog
• Timescale Blog
• Instagram Engineering
• Smashing Magazine - Useful and innovative information to web designers and developers.
• Project Zero
• Dropbox Tech Blog - Dropbox
• The Coinbase Blog
• The Official NVIDIA Blog
• MongoDB Blog
• Figma blog
• Stories by Dribbble
• Sindre Sorhus
• basecs - Exploring the basics of computer science.
• Mike Bostock - Creator of D3js.
• Amelia Wattenberger
• Evan You - Creator and project lead of Vue.js.
• Brian Armstrong - Co-Founder and CEO at Coinbase.
• Steve Yegge (old blog)
• Blake Ross - Founder @ Firefox, Former Director of Product @ Facebook.
• Addy Osmani - Eng. Manager at Google working on Chrome.
• Charles Scalfani - Software Engineer and Architect, Teacher, Writer, Filmmaker, Photographer, Artist…
• Cisco Talos Intelligence Group
• TestDriven.io Blog
• pganalyze Blog
• The Teleport Blog
• Qvault Blog
• Simple Thread Blog
• r2c blog
• Packagecloud Blog
• Capital and Growth
• Vitalik Buterin
• Distill - Articles about machine learning.
• Julia Evans
• Christopher Olah
• Andrej Karpathy
• Andrej Karpathy - Medium
• Lea Verou
• martinfowler.com
• fasterthanli.me
• Michael Nielsen
• Nick Bostrom
• Simon Willison
• Benedict Evans
• David Walsh
• blog.izs.me
• Nicky Case
• null program - Chris Wellons.
• Eli Bendersky
• swyx.io - Shawn Wang.
• Susan Fowler
• Kalzumeus - Patrick McKenzie.
• Brett Cannon
• Neopythonic - Guido van Rossum.
• Sara Soueidan
• 2ality - JavaScript and more by Dr. Axel Rauschmayer.
• kottke.org - Home of Fine HyperText Products.
• antirez.com - Salvatore Sanfilippo.
• fasterli.me
• catonmat.net - Peter Krumins, powered by Alien Technology.
• Dan Luu
• The Pragmatic Engineer
• The Daily WTF - Curious Perversions in Information Technology.
• Raph Levien
• Compiled;
• Red Blob Games
• Sam Altman
• Drew DeVault
• Andy Matuschak
• Benedict Evans
• Robert Heaton
• Dave Rupert
• Adam Wathan
• Charles Stross
• benkuhn.net
• Mr. Money Mustache
• zachleat.com
• Martin Tournoij
• Marco Arment
• Jeff Kaufman
• Brad Frost
• Kevin Kelly
• Yasoob Khalid
• Restricted Data - The Nuclear Secrecy Blog.
• CSS Wizardry
• Rodrigo's Stuff - Rodrigo Copetti.
• programming is terrible
• beepb00p
• Daniel Stenberg
• Calvin French-Owen
• tonsky.me
• Will Crichton
• Neil Sainsbury
• Max Böck
• Arabesque
• craphound.com - Cory Doctorow.
• charity.wtf
• Haki Benita
• macwright.com
• Slate Star Codex
• Astral Codex Ten
• Applied Divinity Studies
• Mark Erikson
• Vintage Computing and Gaming
• zeux.io
• David Winterbottom
• Pascal's scribbles
• ploeh blog
• Sam Curry - Web Application Security Researcher.
• Brett Buerhaus
• Intuitive Explanations
• Deciphering Glyph
• esoteric.codes
• mkdev
• Dhruv On Math
• The Cheapskate's Guide to Computers and the Internet
• Chip Huyen
• Venam's Blog
• Vicki Boykis
• Practical Business Python
• Brandon Rhodes
• Henrik Warne
• 250bpm
• Infinity Plus One
• The n-Category Café

Magazines/Newspapers

• National Geographic
• Fortune
• The New York Times
• The Washington Post
• The Wall Street Journal
• Variety
• Paris Review
• Rolling Stone
• Inc.com
• The Atlantic
• Axios
• Longreads
• Longform
• TorrentFreak
• Daily Nous
• Teslarati

Cybersecurity

• Schneier on Security - Bruce Schneier.
• Krebs on Security - In-depth security news and investigation.
• Null Byte
• Web Security Academy - Cybersecurity Training from PortSwigger.
• Objective-See
• bugcrowd - Crowdsourced Security Platform.
• Kevin Mitnick
• Continuing Ed - Edward Snowden.
• Gwern.net
• Shtetl-Optimized - Scott Aaronson.
• linusakesson.net
• Martin Kleppmann
• John D. Cook

People

• Dennis Ritchie
• Brian Kernighan
• Don Knuth
• Paul Graham
• Gates Notes
• Eric S. Raymond
• Richard Stallman
• Bjarne Stroustrup
• Joel Spolsky
• Aaron Swartz
• _why (_why's Estate)
• Stephen Wolfram
• The View from Aristeia - Scott Mayer's blog.
• Peter Norwig
• Douglas Crockford
• Julian Assange
• Edward Snowden
• Brett Slatkin
• Jamie Zawinski
• Jessie Frazelle
• Fabrice Bellard
• Marijn Haverbeke
• Chet Ramey
• Sindre Sorhus
• Kenneth Reitz
• Derek Sivers
• Satoshi Nakamoto
• Claude Shannon

Miscellaneous

• Feedly Discover
• Hacker News
  • Y Combinator Company List
  • Hacker Newsletter
  • n-gate.com - We can't both be right.
  • hckrnews.com - Hacker News sorted by time.
  • Best of Show HN
• Reddit
  • redditlist.com
• Lobsters
• YouTube
• Stack Overflow
• Slashdot
• nixers.net
• Quora
• Stratechery - Ben Thompson.
• dev.to
• Indie Hackers
• Failory - Learn from other entrepreneur's mistakes.
• Medium
• Dribble - Find and showcase creative work from world's best design professionals.
• Behance - Showcase and discover creative work.
• Triplebyte - Software Engineer Job Search.
• fossjobs.net
• .:: Phrack Magazine ::.
• Wayback Machine
• archive.today
• Wikipedia
• MIT Technology Review
• Facebook Open Source
• Twitter Open Source
• Venture Hacks - Advice for startups.
• Facebook Engineering
• Google Open Source
• Adobe Open Source
• Google Developers Blog
• Space.com - NASA, Space Exploration and Astronomy News.
• ZDNet
• Reuters
• Product Hunt - The best new products, every day.
• techradar
• Hacker Noon
• Ars Technica
• TechCrunch
• Crunchbase - Discover innovative companies and the people behind them.
• The Guardian
• The Verge
• ProgrammableWeb - Leading source of news and information about Internet-based APIs.
• Harvard Business Review
• Stratechery
• Serializer
• Investopedia
• Engadget
• YCombinator
• BoingBoing
• Gizmodo
• lifehacker
• Fast Company
• HowStuffWorks
• aeon - Essays, Ideas, Videos
• lifewire
• HowToGeek
• XDA Developers
• AngelList - Experience the startup ecosystem — invest in startups, research the fastest-growing companies, and find a job you love.
• stackshare - Find the right developer tools and the companies that use them.
• Kickstarter - global crowdfunding platform focused on creativity.
• secretGeekWiki
• DistroWatch
• distrochooser - Guide for Linux beginners to choosing a suitable Linux distribution.
• Wait But Why
• Logical Increments - PC building guides.
• Lambda the Ultimate
• It's FOSS
• techdirt
• Social Blade - Social Blade tracks user statistics for YouTube, Twitch, Instagram, and Twitter.
• MakeUseOf
• Epsilon Theory
• The iPhone Wiki - Unofficial wiki dedicated to collecting, storing and providing information on the internals of Apple's iDevices.