Linux #
awesome-selfhosted/awesome-selfhosted- A list of Free Software network services and web applications which can be hosted locally. Selfhosting is the process of hosting and managing applications instead of renting from Software-as-a-Service providers.
luong-komorebi/Awesome-Linux-Software- A list of awesome applications, software, tools and other materials for Linux distros.
k4m4/terminals-are-sexy- A curated list of Terminal frameworks, plugins & resources for CLI lovers.
jlevy/the-art-of-command-line- Master the command line, in one page.
dylanaraps/pure-bash-bible- A collection of pure bash alternatives to external processes.
learnbyexample/Command-line-text-processing- From finding text to search and replace, from sorting to beautifying text and more.
imthenachoman/How-To-Secure-A-Linux-Server- An evolving how-to guide for securing a Linux server.
agarrharr/awesome-cli-apps- A curated list of command line apps.
mayfrost/guides- Looking for a guide? You came to the right place.
chubin/awesome-console-services- A curated list of awesome console services (reachable via HTTP, HTTPS and other network protocols).
alebcay/awesome-shell- A curated list of awesome command-line frameworks, toolkits, guides and gizmos.
Websites
cindyq/linuxjourney- Learn the ways of Linux-fu, for free. https://linuxjourney.com.
junaid33/opensource.builders- Find open-source alternatives. https://opensource.builders.
lhunath/guide.bash.academy- Bash Academy - The Bash Guide. https://guide.bash.academy.
Vim
hakluke/how-to-exit-vim- Some simple methods for exiting vim.
iggredible/Learn-Vim- Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for.
Websites
vim-awesome/vim-awesome- Awesome Vim plugins from across the universe. http://vimawesome.com.
rtorr/vim-cheat-sheet- A mobile friendly Vim cheat sheet. https://vim.rtorr.com.
theicfire/vimsheet- Vim cheat sheet from beginners to pros. https://vimsheet.com.
vim-advent-calendar/vimways.org- Vim-themed advent calendar. https://vimways.org.
igrigorik/vimgolf- Real Vim ninjas count every keystroke - do you? http://www.vimgolf.com.
Emacs
emacs-tw/awesome-emacs- A community driven list of useful Emacs packages, libraries and others.
redguardtoo/mastering-emacs-in-one-year-guide- Be great at emacs in one year.
Shells
unixorn/awesome-zsh-plugins- A collection of ZSH frameworks, plugins, themes and tutorials.
LaTeX
luong-komorebi/Begin-Latex-in-minutes- Brief Intro to LaTeX for beginners that helps you use LaTeX with ease.
Browser customization
Aris-t2/CustomCSSforFx- Custom CSS tweaks for Firefox Quantum.
Timvde/UserChrome-Tweaks- A community maintained repository of userChrome.css tweaks for Firefox.
MrOtherGuy/firefox-csshacks- Collection of userstyles affecting the browser.
Dotfiles
(Web) Dotfiles - ArchWiki
webpro/awesome-dotfiles- A curated list of dotfiles resources.
holman/dotfiles- Zach Holman's Dotfiles.
mathiasbynens/dotfiles- Mathias Bynen's Dotfiles.
jessfraz/dotfiles- Jess Frazelle's Dotfiles.
LukeSmithxyz/voidrice- Luke Smith's Dotfiles.
wincent/wincent- Greg Hurrell's Dotfiles.
(GitLab) dwt1/dotfiles- Distrotube's Dotfiles
thoughtbot/dotfiles- A set of vim, zsh, git, and tmux configuration files.
Websites
dotfiles/dotfiles.github.com- The unofficial guide to doing dotfiles on GitHub. http://dotfiles.github.io.
Raspberry Pi #
thibmaek/awesome-raspberry-pi- A curated list of awesome Raspberry Pi tools, projects, images and resources.
s-matyukevich/raspberry-pi-os- Learning operating system development using Linux kernel and Raspberry Pi.
Regular expressions and algorithms #
ziishaned/learn-regex- Learn regex the easy way.
tayllan/awesome-algorithms- A curated list of awesome places to learn and/or practice algorithms.
Websites
ericdrowell/BigOCheatSheet- https://bigocheatsheet.com.
geongeorge/i-hate-regex- The code for iHateregex.io - The Regex Cheat Sheet. https://iHateRegex.io.
firasdib/Regex101- Online Regex Tester and Debugger. Issue Tracker for https://regex101.com.
(GitLab) javallone/regexper-static- Regular Expression Visualization Site. https://regexper.com.
Programming #
Websites
ronreiter/interactive-tutorials- Interactive Tutorials. https://www.learnpython.org.
Python #
donnemartin/interactive-coding-challenges- 120+ interactive Python coding interview challenges (algorithms and data structures). Includes Anki flashcards.
norvig/pytudes- Python programs, usually short, of considerable difficulty, to perfect particular skills.
vinta/awesome-python- A curated list of awesome Python frameworks, libraries, software and resources.
TheAlgorithms/Python- All Algorithms implemented in Python.
faif/python-patterns- A collection of design patterns/idioms in Python.
keon/algorithms- Minimal examples of data structures and algorithms in Python.
satwikkansal/wtfpython- A collection of surprising Python snippets and lesser-known features.
mahmoud/awesome-python-applications- Free software that works great, and also happens to be open-source Python.
geekcomputers/Python- @geekcomputers' Python Examples.
crazyguitar/pysheeet- Python Cheat Sheet.
dabeaz-course/practical-python- Practical Python Programming (course by @dabeaz).
funkythings/python-cheat-sheet- Python Cheat Sheet NumPy, Matplotlib.
machinelearningmindset/machine-learning-course- Machine Learning Course with Python. Refer to the course page for step-by-step explanations.
chrisalbon/notes- Notes On Using Data Science & Artificial Intelligence.
rougier/numpy-100- 100 numpy exercises (with solutions).
rougier/numpy-tutorial- Numpy beginner tutorial.
rougier/matplotlib-tutorial- Matplotlib tutorial for beginners.
matplotlib-cheatsheet- Matplotlib 3.1 cheat sheet.
chrisalbon/code_py- A collection of well-commented code snippets for data science.
cantaro86/Financial-Models-Numerical-Methods- Collection of notebooks about quantitative finance, with interactive python code.
Websites
scipy-lectures/scipy-lecture-notes- Tutorial material on the scientific Python ecosystem. https://scipy-lectures.org.
pyvideo/pyvideo- A Python media index. https://pyvideo.org.
JavaScript #
airbnb/javascript- JavaScript Style Guide.
freeCodeCamp/freeCodeCamp- The https://www.freeCodeCamp.org open source codebase and curriculum. Learn to code for free together with millions of people.
trekhleb/javascript-algorithms- Algorithms and data structures implemented in JavaScript with explanations and links to further readings.
30-seconds/30-seconds-of-code- Short JavaScript code snippets for all your development needs.
microsoft/Web-Dev-For-Beginners- 24 Lessons, 12 Weeks, Get Started as a Web Developer
microsoft/Data-Science-For-Beginners- 10 Weeks, 20 Lessons, Data Science for All!
microsoft/ML-For-Beginners- 12 weeks, 26 lessons, 52 quizzes, classic Machine Learning for all
microsoft/IoT-For-Beginners- 12 Weeks, 24 Lessons, IoT for All!
hemanth/functional-programming-jargon- Jargon from the functional programming world in simple terms!
yangshun/awesome-spinners- A curated collection of dazzling web spinners.
wesbos/JavaScript30- 30 Day Vanilla JS Challenge.
ryanmcdermott/clean-code-javascript- Clean Code concepts adapted for JavaScript.
javascript-tutorial/en.javascript.info- Modern JavaScript Tutorial.
You Don't Know JS- A book series on JavaScript. @YDKJS on twitter.
leonardomso/33-js-concepts- 33 concepts every JavaScript developer should know.
denysdovhan/wtfjs- A list of funny and tricky JavaScript examples.
mbeaudru/modern-js-cheatsheet- Cheatsheet for the JavaScript knowledge you will frequently encounter in modern projects.
sorrycc/awesome-javascript- A collection of awesome browser-side JavaScript libraries, resources and shiny things.
lukehoban/es6features- Overview of ECMAScript 6 features.
you-dont-need/You-Dont-Need-JavaScript- CSS is powerful, you can do a lot of things without JS.
you-dont-need/You-Dont-Need-Lodash-Underscore- List of JavaScript methods which you can use natively + ESLint Plugin.
you-dont-need/You-Dont-Need-Momentjs- List of functions which you can use to replace moment.js + ESLint Plugin.
DrkSephy/es6-cheatsheet- ES6 cheatsheet containing tips, tricks, best practices and code snippets.
vlandham/js_data- Data manipulation and processing in JavaScript.
bradtraversy/vanillawebprojects- Mini projects built with HTML5, CSS & JavaScript. No frameworks or libraries.
dexteryy/spellbook-of-modern-webdev/- A Big Picture, Thesaurus, and Taxonomy of Modern JavaScript Web Development.
usablica/front-end-frameworks- A collection of best front-end frameworks for faster and easier web development.
lydiahallie/javascript-questions- A long list of (advanced) JavaScript questions, and their explanations.
jamiebuilds/itsy-bitsy-data-structures- All the things you didn't know you wanted to know about data structures.
React/React Native
jondot/awesome-react-native- Awesome React Native components, news, tools, and learning material!
krasimir/react-in-patterns- A free book that talks about design patterns/techniques used while developing with React.
markerikson/react-redux-links- Curated tutorial and resource links I've collected on React, Redux, ES6, and more.
Websites
no-stack-dub-sack/cs-playground-react- In-Browser Algorithm and Data Structures Practice. http://cs-playground-react.surge.sh.
Websites
phuoc-ng/1loc- What's your favorite JavaScript single LOC (line of code)? https://1loc.dev.
phuoc-ng/html-dom- Common tasks of managing HTML DOM with vanilla JavaScript. https://htmldom.dev.
wesbos/keycodes- Easy visualizer for JavaScript KeyCodes. https://keycode.info.
TypeScript #
DefinitelyTyped/DefinitelyTyped- The repository for high quality TypeScript type definitions.
typescript-cheatsheets/react-typescript-cheatsheet- Cheatsheets for experienced React developers getting started with TypeScript.
HTML/CSS #
joshbuchea/HEAD- A list of everything that could go in the head of your document.
philipwalton/flexbugs- A community-curated list of flexbox issues and cross-browser workarounds for them.
30-seconds/30-seconds-of-css- "Short CSS code snippets for all your development needs.
phuoc-ng/csslayout- A collection of popular layouts and patterns made with CSS. Now it has 90+ patterns and continues growing!
AllThingsSmitty/css-protips- A collection of tips to help take your CSS skills pro.
Browser add-ons/extensions #
mdn/webextensions-examples- Example Firefox add-ons created using the WebExtensions API.
GoogleChrome/chrome-extensions-samples- Chrome Extensions Samples.
Design #
bradtraversy/design-resources-for-developers- Curated list of design and UI resources from stock photos, web templates, CSS frameworks, UI libraries, tools and much more.
Rust #
phil-opp/blog_os- Writing an OS in Rust.
EmilHernvall/dnsguide- A guide to writing a DNS Server from scratch in Rust.
Dhghomon/easy_rust- Rust explained using easy English.
Websites
ralfbiedert/cheats.rs- Rust Language Cheat Sheet. https://cheats.rs.
Haskell #
soupi/haskell-study-plan- An opinionated list of resources for learning Haskell.
Elixir #
elixirschool/elixirschool- Premier destination to learn and master the Elixir programming language.
C #
DoctorWkt/acwj- A Compiler Writing Journey.
cstack/db_tutorial- Writing a sqlite clone from scratch in C.
orangeduck/BuildYourOwnLisp- Learn C and build your own programming language in under 1000 lines of code!
C++ #
isocpp/CppCoreGuidelines- The C++ Core Guidelines are a set of tried-and-true guidelines, rules, and best practices about coding in C++.
Go #
hoanhan101/ultimate-go- Ultimate Go study guide, with heavily documented code and programs analysis all in 1 place.
quii/learn-go-with-tests- Learn Go with test-driven development.
mmcgrana/gobyexample- Go by Example.
Java #
iluwatar/java-design-patterns- Design patterns implemented in Java.
teivah/algodeck- Algo Deck is an Open-Source Collection of +200 Algorithmic Cards to Help you Preparing your Algorithm & Data Structure Interview.
williamfiset/Algorithms- A collection of algorithms and data structures.
Swift #
raywenderlich/swift-algorithm-club- Algorithms and data structures in Swift, with explanations!
APIs #
microsoft/api-guidelines- Microsoft REST API Guidelines.
public-apis/public-apis- A collective list of free APIs for use in software and web development.
n0shake/Public-APIs- A public list of APIs from round the web.
howtographql/howtographql- The Fullstack Tutorial for GraphQL.
mledoze/countries- World countries in JSON, CSV, XML and Yaml.
Data science/Scientific computing #
Quantum computing #
microsoft/QuantumKatas- Tutorials and programming exercises for learning Q# and quantum computing.
AI and Deep learning/Machine learning #
openai/spinningup- An educational resource to help anyone learn deep reinforcement learning.
practicalAI/practicalAI- A practical approach to machine learning to enable everyone to learn, explore and build.
madewithml/basics-
Learn ML with clean code, simplified math and illustrative visuals. As you learn, work on interesting projects
and share them on https://madewithml.com for the community
to discover and learn from!
lexfridman/mit-deep-learning- Tutorials, assignments, and competitions for MIT Deep Learning related courses.
ageron/handson-ml- A series of Jupyter notebooks that walk you through the fundamentals of Machine Learning and Deep Learning in python using Scikit-Learn and TensorFlow.
ageron/handson-ml2- A series of Jupyter notebooks that walk you through the fundamentals of Machine Learning and Deep Learning in python using Scikit-Learn and TensorFlow 2.
eriklindernoren/ML-From-Scratch- Machine Learning From Scratch. Bare bones NumPy implementations of machine learning models and algorithms with a focus on accessibility. Aims to cover everything from linear regression to deep learning.
System design #
donnemartin/system-design-primer- Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
justinamiller/SoftwareArchitect- Path to a Software Architect.
Web design/accessibilty #
Websites
a11yproject/a11yproject.com- A community–driven effort to make web accessibility easier. https://a11yproject.com.
Source control/Git #
progit/progit2- Pro Git 2nd Edition.
arslanbilal/git-cheat-sheet- git and git flow cheat sheet.
git-tips/tips- Most commonly used git tips and tricks.
tiimgreen/github-cheat-sheet- A list of cool features of Git and GitHub.
github/gitignore- A collection of useful .gitignore templates.
Websites
firstcontributions/first-contributions- Help beginners to contribute to open source projects. https://firstcontributions.github.io.
github/training-kit- Open source cheat sheets for Git and GitHub. https://github.github.com/training-kit.
git/git-reference- Online Git Reference. http://git.github.io/git-reference.
rogerdudler/git-guide- git - the simple guide. http://rogerdudler.github.com/git-guide.
pcottle/learnGitBranching- An interactive git visualization and tutorial. Aspiring students of git can use this app to educate and challenge themselves towards mastery of git! https://pcottle.github.io/learnGitBranching.
Open source #
freeCodeCamp/how-to-contribute-to-open-source- A guide to contributing to open source.
Websites
github/choosealicense.com- A site to provide non-judgmental guidance on choosing a license for your open source project. https://choosealicense.com.
github/opensource.guide- Community guides for open source creators. https://opensource.guide.
Tensorflow #
aymericdamien/TensorFlow-Examples- TensorFlow Tutorial and Examples for Beginners (support TF v1 & v2).
tensorflow/models- Models and examples built with TensorFlow.
System administration/site reliability/production engineering #
kahun/awesome-sysadmin- A curated list of amazingly awesome open source sysadmin resources inspired by Awesome PHP.
dastergon/awesome-sre- A curated list of Site Reliability and Production Engineering resources. https://sre.xyz.
Cheatsheets #
LeCoupa/awesome-cheatsheets- Awesome cheatsheets for popular programming languages, frameworks and development tools. They include everything you should know in one single file.
Kapeli/cheatsheets- Collection of Dash cheat sheets https://kapeli.com/cheatsheets.
Kapeli/Dash-User-Contributions- Dash repo of user contributed docsets.
rstacruz/cheatsheets- @rstacruz's cheatsheets. https://devhints.io.
Privacy and security #
OWASP/CheatSheetSeries- The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.
drduh/macOS-Security-and-Privacy-Guide- Guide to securing and improving privacy on macOS.
tycrek/degoogle- A huge list of alternatives to Google products. Privacy tips, tricks, and links.
Websites
privacytoolsIO/privacytools.io- You are being watched. Protect your privacy against global mass surveillance. https://privacytools.io.
Penetration testing #
Hack-with-Github/Awesome-Hacking- A collection of various awesome lists for hackers, pentesters and security researchers.
danielmiessler/SecLists- SecLists is the security tester's companion. It's a collection of multiple types of lists used during security assessments, collected in one place. List types include usernames, passwords, URLs, sensitive data patterns, fuzzing payloads, web shells, and many more.
OlivierLaflamme/Cheatsheet-God- Penetration Testing Reference Bank - OSCP / PTP & PTX Cheatsheet.
juliocesarfort/public-pentesting-reports- Curated list of public penetration test reports released by several consulting firms and academic security groups.
SundownDEV/hacker-roadmap- A guide for amateurs pen testers and a collection of hacking tools, resources and references to practice ethical hacking, pen testing and web security.
nahamsec/Resources-for-Beginner-Bug-Bounty-Hunters- A list of resources for those interested in getting started in bug bounties.
Safer Internet #
StevenBlack/hosts- Extending and consolidating hosts files from several well-curated sources like adaway.org, mvps.org, malwaredomainlist.com, someonewhocares.org, and potentially others. You can optionally invoke extensions to block additional sites by category.
EnergizedProtection/block- Let's make an annoyance free, better open internet, altogether!
Decentralization #
redecentralize/alternative-internet- A collection of interesting new networks and tech aiming at decentralisation (in some form).
Video production #
leandromoreira/digital_video_introduction- A hands-on introduction to video technology: image, video, codec (av1, vp9, h265) and more (ffmpeg encoding).
Natural language processing #
microsoft/nlp-recipes- Natural Language Processing Best Practices & Examples.
Interviewing/Jobs #
h5bp/Front-end-Developer-Interview-Questions- A list of helpful front-end related questions you can use to interview potential candidates, test yourself or completely ignore.
yangshun/front-end-interview-handbook- Almost complete answers to "Front-end Job Interview Questions" which you can use to interview potential candidates, test yourself or completely ignore.
jwasham/coding-interview-university- A complete computer science study plan to become a software engineer.
viraptor/reverse-interview- Questions to ask the company during your interview.
kdn251/interviews- Everything you need to know to get the job.
remoteintech/remote-jobs- A list of semi to fully remote-friendly companies in tech.
lukasz-madon/awesome-remote-job- A curated list of awesome remote jobs and resources.
poteto/hiring-without-whiteboards- Companies that don't have a broken hiring process.
macOS/iOS #
serhii-londar/open-source-mac-os-apps-
Awesome list of open source applications for macOS.
dkhamsing/open-source-ios-apps- Collaborative List of Open-Source iOS Apps.
nikitavoloboev/my-mac-os- List of applications and tools that make my macOS experience even more amazing.
learn-anything/alfred-workflows- Amazing Alfred Workflows.
zenorocha/alfred-workflows- A collection of Alfred 3 and 4 workflows that will rock your world.
Project based learning #
danistefanovic/build-your-own-x- Build your own (insert technology here).
karan/Projects- A list of practical projects that anyone can solve in any programming language.
tuvtran/project-based-learning- Curated list of project-based tutorials.
florinpop17/app-ideas- A Collection of application ideas which can be used to improve your coding skills.
AlgoryL/Projects-from-Scratch- Read and do projects.
Computer science/math #
ossu/computer-science- Path to a free self-taught education in Computer Science!
ForrestKnight/open-source-cs- Open Source CS Curriculum.
P1xt/p1xt-guides- Programming curricula.
Jam3/math-as-code- a cheat-sheet for mathematical notation in code form.xxxx
Websites
seeingtheory/Seeing-Theory- A visual introduction to probability and statistics. http://seeingtheory.io.
Courses/Books #
EbookFoundation/free-programming-books- Freely available programming books.
zero-equals-false/awesome-programming-books- A curated list of awesome programming books.
mikesprague/udacity-nanodegrees- List of Udacity Nanodegree programs with links to the free courses in their curricula.
papers-we-love/papers-we-love- Papers from the computer science community to read and discuss. https://paperswelove.org.
fastai/fastbook- Draft of the fastai book.
webrtc-for-the-curious/webrtc-for-the-curious- WebRTC for the Curious: Go beyond the APIs.
algorithm-archivists/algorithm-archive- A collaborative book on algorithms.
General #
sindresorhus/awesome- Awesome lists about all kinds of interesting topics.
minimaxir/hacker-news-undocumented- Some of the hidden norms about Hacker News not otherwise covered in the Guidelines and the FAQ.
jnv/lists- The definitive list of lists (of lists) curated on GitHub and elsewhere.
charlax/professional-programming- A collection of full-stack resources for programmers.
jbranchaud/til- Josh Branshaud's TIL.
minimaxir/big-list-of-naughty-strings- The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.
bmorelli25/Become-A-Full-Stack-Web-Developer- Free resources for learning Full Stack Web Development.
hellerve/programming-talks- Awesome & interesting talks about programming.
Developer-Y/cs-video-courses- List of Computer Science courses with video lectures.
chrislgarry/Apollo-11- Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.
LisaDziuba/Awesome-Design-Tools- The best design tools and plugins for everything.
LisaDziuba/Marketing-for-Engineers- A curated collection of marketing articles & tools to grow your product.
dastergon/awesome-chaos-engineering- A curated list of Chaos Engineering resources.
mtdvio/every-programmer-should-know- A collection of (mostly) technical things every software developer should know.
sdmg15/Best-websites-a-programmer-should-visit- Some useful websites for programmers.
rShetty/awesome-podcasts- Collection of awesome podcasts.
gothinkster/realworld- "The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, and many more.
adambard/learnxinyminutes-docs- Code documentation written as code! How novel and totally my idea!.
awesomedata/awesome-public-datasets- A topic-centric list of HQ open datasets.
trimstray/the-book-of-secret-knowledge- A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.
dwmkerr/hacker-laws- Laws, Theories, Principles and Patterns that developers will find useful.
learn-anything/learn-anything- Organize world's knowledge, explore connections and curate learning paths.
kdeldycke/awesome-falsehood- Curated list of falsehoods programmers believe in.
google/eng-practices- Google's Engineering Practices documentation.
ripienaar/free-for-dev- A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev. https://free-for.dev.
dumb-password-rules/dumb-password-rules- Shaming sites with dumb password rules.
psenough/teach_yourself_demoscene_in_14_days- guidebook idea from here.
heroku/12factor- 12factor.net.
Igglybuff/awesome-piracy- A curated list of awesome warez and piracy links.
fpereiro/backendlore- How I write backends.
lirantal/nodejs-cli-apps-best-practices- The largest Node.js CLI Apps best practices list.
semver/semver- Semantic Versioning Specification.
erikwiffin/0.30000000000000004- Floating Point Math Examples.
olivierlacan/keep-a-changelog- If you build software, keep a changelog.
carloscuesta/gitmoji- An emoji guide for your commit messages.
ErikCH/DevYouTubeList- List of Development YouTube Channels.
2factorauth/twofactorauth- List of sites with two factor auth support which includes SMS, email, phone calls, hardware, and software.
pirate/wireguard-docs- Unofficial WireGuard Documentation: Setup, Usage, Configuration, and full example setups for VPNs supporting both servers & roaming clients.
danluu/post-mortems- A collection of postmortems.
luruke/browser-2020- Things you can do with a browser in 2020.
jlevy/og-equity-compensation- Stock options, RSUs, taxes — read the latest edition: https://holloway.com/g/equity-compensation.
JesseKPhillips/USA-Constitution- A history of edits to the US Constitution as it has been amended. Written in markdown to match original formatting.
Droogans/unmaintainable-code- A more maintainable, easier to share version of the infamous http://mindprod.com/jgloss/unmain.html.
Websites
linode/docs- Linode guides and tutorials. https://linode.com/docs.
clarkgrubb/hyperpolyglot- commonly used features in a side-by-side format. https://hyperpolyglot.org.
2factorauth/twofactorauth- List of sites with two factor auth support which includes SMS, email, phone calls, hardware, and software. https://twofactorauth.org.