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Learn to automate security into a fast-paced DevOps environment using various open-source tools and scripts.

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Get certified in the new tech skill to rule the industry
Site Reliability Engineering (SRE) Certified Professional

A method of measuring and achieving reliability through engineering and operations work โ€“ developed by Google to manage services.

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Get enrolled for the most advanced and only course in the WORLD which can make you an expert and proficient Architect in DevOps, DevSecOps and Site Reliability Engineering (SRE) principles together.

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Azure DevOps Solutions Expert

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Learn and get certified
AWS Certified DevOps Professional

Learn about the DevOps services offered by AWS and how you can use them to make your workflow more efficient.

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List of Step by Step Manuals, Howto Guide & Tutorials for Every Software Engineers

Shell/Command line

  ๐Ÿ”ธ pure-bash-bible – is a collection of pure bash alternatives to external processes.
  ๐Ÿ”ธ pure-sh-bible – is a collection of pure POSIX sh alternatives to external processes.
  ๐Ÿ”ธ bash-guide – is a guide to learn bash.
  ๐Ÿ”ธ bash-handbook – for those who wanna learn Bash.
  ๐Ÿ”ธ The Bash Hackers Wiki – hold documentation of any kind about GNU Bash.
  ๐Ÿ”ธ Shell & Utilities – describes the commands offered to application programs by POSIX-conformant systems.
  ๐Ÿ”ธ the-art-of-command-line – master the command line, in one page.
  ๐Ÿ”ธ Shell Style Guide – a shell style guide for Google-originated open-source projects.

โ–ช๏ธ Text Editors

  ๐Ÿ”ธ Vim Cheat Sheet – great multi language vim guide.

โ–ช๏ธ Python

  ๐Ÿ”ธ Awesome Python – a curated list of awesome Python frameworks, libraries, software and resources.
  ๐Ÿ”ธ python-cheatsheet – comprehensive Python cheatsheet.
  ๐Ÿ”ธ – basic reference for beginner and advanced developers.

โ–ช๏ธ Sed & Awk & Other

  ๐Ÿ”ธ Fโ€™Awk Yeah! – advanced sed and awk usage (Parsing for Pentesters 3).

โ–ช๏ธ *nix & Network

  ๐Ÿ”ธ nixCraft – linux and unix tutorials for new and seasoned sysadmin.
  ๐Ÿ”ธ TecMint – the ideal Linux blog for Sysadmins & Geeks.
  ๐Ÿ”ธ Omnisecu – free Networking, System Administration and Security tutorials.
  ๐Ÿ”ธ linux-cheat – Linux tutorials and cheatsheets. Minimal examples. Mostly user-land CLI utilities.
  ๐Ÿ”ธ linuxupskillchallenge – learn the skills required to sysadmin.
  ๐Ÿ”ธ Unix Toolbox – Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users.
  ๐Ÿ”ธ Linux Kernel Teaching – is a collection of lectures and labs Linux kernel topics.
  ๐Ÿ”ธ htop explained – explanation of everything you can see in htop/top on Linux.
  ๐Ÿ”ธ Linux Guide and Hints – tutorials on system administration in Fedora and CentOS.
  ๐Ÿ”ธ strace-little-book – a little book which introduces strace.
  ๐Ÿ”ธ linux-tracing-workshop – examples and hands-on labs for Linux tracing tools workshops.
  ๐Ÿ”ธ http2-explained – a detailed document explaining and documenting HTTP/2.
  ๐Ÿ”ธ http3-explained – a document describing the HTTP/3 and QUIC protocols.
  ๐Ÿ”ธ HTTP/2 in Action – an excellent introduction to the new HTTP/2 standard.
  ๐Ÿ”ธ Let’s code a TCP/IP stack – great stuff to learn network and system programming at a deeper level.
  ๐Ÿ”ธ Nginx Admin’s Handbook – how to improve NGINX performance, security and other important things.
  ๐Ÿ”ธ – NGINX config generator on steroids.
  ๐Ÿ”ธ openssh guideline – is to help operational teams with the configuration of OpenSSH server and client.
  ๐Ÿ”ธ SSH Handshake Explained – is a relatively brief description of the SSH handshake.
  ๐Ÿ”ธ ISC’s Knowledgebase – you’ll find some general information about BIND 9, ISC DHCP, and Kea DHCP.
  ๐Ÿ”ธ – a place to record notes while studying for Cisco’s CCNP certification.

โ–ช๏ธ Microsoft

  ๐Ÿ”ธ AD-Attack-Defense – attack and defend active directory using modern post exploitation activity.

โ–ช๏ธ Large-scale systems

  ๐Ÿ”ธ The System Design Primer – learn how to design large-scale systems.
  ๐Ÿ”ธ Awesome Scalability – best practices in building High Scalability, High Availability, High Stability, and more.
  ๐Ÿ”ธ Web Architecture 101 – the basic architecture concepts.

โ–ช๏ธ System hardening

  ๐Ÿ”ธ CIS Benchmarks – secure configuration settings for over 100 technologies, available as a free PDF.
  ๐Ÿ”ธ Security Harden CentOS 7 – this walks you through the steps required to security harden CentOS.
  ๐Ÿ”ธ CentOS 7 Server Hardening Guide – great guide for hardening CentOS; familiar with OpenSCAP.
  ๐Ÿ”ธ awesome-security-hardening – is a collection of security hardening guides, tools and other resources.
  ๐Ÿ”ธ The Practical Linux Hardening Guide – provides a high-level overview of hardening GNU/Linux systems.
  ๐Ÿ”ธ Linux Hardening Guide – how to harden Linux as much as possible for security and privacy.

โ–ช๏ธ Security & Privacy

  ๐Ÿ”ธ Hacking Articles – LRaj Chandel’s Security & Hacking Blog.
  ๐Ÿ”ธ AWS security tools – make your AWS cloud environment more secure.
  ๐Ÿ”ธ Rawsec’s CyberSecurity Inventory – an inventory of tools and resources about CyberSecurity.
  ๐Ÿ”ธ The Illustrated TLS Connection – every byte of a TLS connection explained and reproduced.
  ๐Ÿ”ธ SSL Research – SSL and TLS Deployment Best Practices by SSL Labs.
  ๐Ÿ”ธ SELinux Game – learn SELinux by doing. Solve Puzzles, show skillz.
  ๐Ÿ”ธ Certificates and PKI – everything you should know about certificates and PKI but are too afraid to ask.
  ๐Ÿ”ธ The Art of Subdomain Enumeration – a reference for subdomain enumeration techniques.
  ๐Ÿ”ธ Quitting Google – the comprehensive guide to quitting Google.

โ–ช๏ธ Web Apps

  ๐Ÿ”ธ OWASP – worldwide not-for-profit charitable organization focused on improving the security of software.
  ๐Ÿ”ธ OWASP ASVS 3.0.1 – OWASP Application Security Verification Standard Project.
  ๐Ÿ”ธ OWASP ASVS 3.0.1 Web App – simple web app that helps developers understand the ASVS requirements.
  ๐Ÿ”ธ OWASP ASVS 4.0 – is a list of application security requirements or tests.
  ๐Ÿ”ธ OWASP Testing Guide v4 – includes a “best practice” penetration testing framework.
  ๐Ÿ”ธ OWASP Dev Guide – this is the development version of the OWASP Developer Guide.
  ๐Ÿ”ธ OWASP WSTG – is a comprehensive open source guide to testing the security of web apps.
  ๐Ÿ”ธ OWASP API Security Project – focuses specifically on the top ten vulnerabilities in API security.
  ๐Ÿ”ธ Mozilla Web Security – help operational teams with creating secure web applications.
  ๐Ÿ”ธ security-bulletins – security bulletins that relate to Netflix Open Source.
  ๐Ÿ”ธ API-Security-Checklist – security countermeasures when designing, testing, and releasing your API.
  ๐Ÿ”ธ Enable CORS – enable cross-origin resource sharing.
  ๐Ÿ”ธ Application Security Wiki – is an initiative to provide all application security related resources at one place.
  ๐Ÿ”ธ Weird Proxies – reverse proxy related attacks; it is a result of analysis of various proxies.
  ๐Ÿ”ธ Webshells – great series about malicious payloads.
  ๐Ÿ”ธ Practical Web Cache Poisoning – show you how to compromise websites by using esoteric web features.
  ๐Ÿ”ธ Hidden directories and files – as a source of sensitive information about web application.
  ๐Ÿ”ธ Explosive blog – great blog about cybersec and pentests.
  ๐Ÿ”ธ Security Cookies – this paper will take a close look at cookie security.
  ๐Ÿ”ธ APISecurityBestPractices – help you keep secrets (API keys, db credentials, certificates) out of source code.

โ–ช๏ธ All-in-one

  ๐Ÿ”ธ LZone Cheat Sheets – all cheat sheets.
  ๐Ÿ”ธ Danโ€™s Cheat Sheetsโ€™s – massive cheat sheets documentation.
  ๐Ÿ”ธ Rico’s cheatsheets – this is a modest collection of cheatsheets.
  ๐Ÿ”ธ DevDocs API – combines multiple API documentations in a fast, organized, and searchable interface.
  ๐Ÿ”ธ – the only cheat sheet you need.
  ๐Ÿ”ธ – collection of cheat sheets about bash, vim and networking.

โ–ช๏ธ Ebooks

  ๐Ÿ”ธ free-programming-books – list of free learning resources in many languages.

โ–ช๏ธ Other

  ๐Ÿ”ธ CTF Series : Vulnerable Machines – the steps below could be followed to find vulnerabilities and exploits.
  ๐Ÿ”ธ 50M_CTF_Writeup – $50 million CTF from Hackerone – writeup.
  ๐Ÿ”ธ ctf-tasks – an archive of low-level CTF challenges developed over the years.
  ๐Ÿ”ธ How to start RE/malware analysis? – collection of some hints and useful links for the beginners.
  ๐Ÿ”ธ The C10K problem – it’s time for web servers to handle ten thousand clients simultaneously, don’t you think?
  ๐Ÿ”ธ How 1500 bytes became the MTU of the internet – great story about the Maximum Transmission Unit.
  ๐Ÿ”ธ poor man’s profiler – like dtrace’s don’t really provide methods to see what programs are blocking on.
  ๐Ÿ”ธ HTTPS on Stack Overflow – this is the story of a long journey regarding the implementation of SSL.
  ๐Ÿ”ธ Julia’s Drawings – some drawings about programming and unix world, zines about systems & debugging tools.
  ๐Ÿ”ธ Hash collisions – this great repository is focused on hash collisions exploitation.
  ๐Ÿ”ธ sha256-animation – animation of the SHA-256 hash function in your terminal.
  ๐Ÿ”ธ BGP Meets Cat – after 3072 hours of manipulating BGP, Job Snijders has succeeded in drawing a Nyancat.
  ๐Ÿ”ธ bgp-battleships – playing battleships over BGP.
  ๐Ÿ”ธ What happens when… – you type into your browser and press enter?
  ๐Ÿ”ธ how-web-works – based on the ‘What happens when…’ repository.
  ๐Ÿ”ธ HTTPS in the real world – great tutorial explain how HTTPS works in the real world.
  ๐Ÿ”ธ Gitlab and NFS bug – how we spent two weeks hunting an NFS bug in the Linux kernel.
  ๐Ÿ”ธ Gitlab melts down – postmortem on the database outage of January 31 2017 with the lessons we learned.
  ๐Ÿ”ธ How To Become A Hacker – if you want to be a hacker, keep reading.
  ๐Ÿ”ธ Operation Costs in CPU – should help to estimate costs of certain operations in CPU clocks.
  ๐Ÿ”ธ Let’s Build a Simple Database – writing a sqlite clone from scratch in C.
  ๐Ÿ”ธ simple-computer – great resource to understand how computers work under the hood.
  ๐Ÿ”ธ The story of “Have I been pwned?” – working with 154 million records on Azure Table Storage.
  ๐Ÿ”ธ TOP500 Supercomputers – shows the 500 most powerful commercially available computer systems known to us.
  ๐Ÿ”ธ How to build a 8 GPU password cracker – any “black magic” or hours of frustration like desktop components do.
  ๐Ÿ”ธ CERN Data Centre – 3D visualizations of the CERN computing environments (and more).
  ๐Ÿ”ธ How fucked is my database – evaluate how fucked your database is with this handy website.
  ๐Ÿ”ธ Linux Troubleshooting 101 , 2016 Edition – everything is a DNS Problem…
  ๐Ÿ”ธ Five Whys – you know what the problem is, but you cannot solve it?
  ๐Ÿ”ธ Maersk, me & notPetya – how did ransomware successfully hijack hundreds of domain controllers?
  ๐Ÿ”ธ – how HTTPS works …in a comic!
  ๐Ÿ”ธ – a fun and colorful explanation of how DNS works.
  ๐Ÿ”ธ POSTGRESQLCO.NF – your postgresql.conf documentation and recommendations.

Inspiring Lists  [TOC]

โ–ช๏ธ SysOps/DevOps

  ๐Ÿ”ธ Awesome Sysadmin – amazingly awesome open source sysadmin resources.
  ๐Ÿ”ธ Awesome Shell – awesome command-line frameworks, toolkits, guides and gizmos.
  ๐Ÿ”ธ Command-line-text-processing – finding text to search and replace, sorting to beautifying, and more.
  ๐Ÿ”ธ Awesome Pcaptools – collection of tools developed by other researchers to process network traces.
  ๐Ÿ”ธ awesome-ebpf – a curated list of awesome projects related to eBPF.
  ๐Ÿ”ธ Linux Network Performance – where some of the network sysctl variables fit into the Linux/Kernel network flow.
  ๐Ÿ”ธ Awesome Postgres – list of awesome PostgreSQL software, libraries, tools and resources.
  ๐Ÿ”ธ quick-SQL-cheatsheet – a quick reminder of all SQL queries and examples on how to use them.
  ๐Ÿ”ธ Awesome-Selfhosted – list of Free Software network services and web applications which can be hosted locally.
  ๐Ÿ”ธ List of applications – huge list of apps sorted by category, as a reference for those looking for packages.
  ๐Ÿ”ธ CS-Interview-Knowledge-Map – build the best interview map.
  ๐Ÿ”ธ DevOps-Guide – DevOps Guide from basic to advanced with Interview Questions and Notes.
  ๐Ÿ”ธ FreeBSD Journal – it is a great list of periodical magazines about FreeBSD and other important things.
  ๐Ÿ”ธ devops-interview-questions – contains interview questions on various DevOps and SRE related topics.

โ–ช๏ธ Developers

  ๐Ÿ”ธ Web Developer Roadmap – roadmaps, articles and resources to help you choose your path, learn and improve.
  ๐Ÿ”ธ Front-End-Checklist – the perfect Front-End Checklist for modern websites and meticulous developers.
  ๐Ÿ”ธ Front-End-Performance-Checklist – Front-End Performance Checklist that runs faster than the others.
  ๐Ÿ”ธ Python’s Magic Methods – what are magic methods? They’re everything in object-oriented Python.
  ๐Ÿ”ธ wtfpython – a collection of surprising Python snippets and lesser-known features.
  ๐Ÿ”ธ js-dev-reads – a list of books and articles for the discerning web developer to read.
  ๐Ÿ”ธ Commit messages guide – a guide to understand the importance of commit messages.

โ–ช๏ธ Security/Pentesting

  ๐Ÿ”ธ Awesome Web Security – a curated list of Web Security materials and resources.
  ๐Ÿ”ธ awesome-cyber-skills – a curated list of hacking environments where you can train your cyber skills.
  ๐Ÿ”ธ awesome-devsecops – an authoritative list of awesome devsecops tools.
  ๐Ÿ”ธ awesome-osint – is a curated list of amazingly awesome OSINT.
  ๐Ÿ”ธ HolyTips – tips and tutorials on Bug Bounty Hunting and Web App Security.
  ๐Ÿ”ธ awesome-threat-intelligence – a curated list of Awesome Threat Intelligence resources.
  ๐Ÿ”ธ Red-Teaming-Toolkit – a collection of open source and commercial tools that aid in red team operations.
  ๐Ÿ”ธ awesome-burp-extensions – a curated list of amazingly awesome Burp Extensions.
  ๐Ÿ”ธ Free Security eBooks – list of a Free Security and Hacking eBooks.
  ๐Ÿ”ธ Hacking-Security-Ebooks – top 100 Hacking & Security E-Books.
  ๐Ÿ”ธ privacy-respecting – curated list of privacy respecting services and software.
  ๐Ÿ”ธ reverse-engineering – list of awesome reverse engineering resources.
  ๐Ÿ”ธ linux-re-101 – a collection of resources for linux reverse engineering.
  ๐Ÿ”ธ reverseengineering-reading-list – a list of Reverse Engineering articles, books, and papers.
  ๐Ÿ”ธ Awesome-WAF – a curated list of awesome web-app firewall (WAF) stuff.
  ๐Ÿ”ธ awesome-shodan-queries – interesting, funny, and depressing search queries to plug into
  ๐Ÿ”ธ RobotsDisallowed – a curated list of the most common and most interesting robots.txt disallowed directories.
  ๐Ÿ”ธ HackingNeuralNetworks – is a small course on exploiting and defending neural networks.
  ๐Ÿ”ธ wildcard-certificates – why you probably shouldn’t use a wildcard certificate.
  ๐Ÿ”ธ Don’t use VPN services – which is what every third-party “VPN provider” does.
  ๐Ÿ”ธ awesome-yara – a curated list of awesome YARA rules, tools, and people.
  ๐Ÿ”ธ macOS-Security-and-Privacy-Guide – guide to securing and improving privacy on macOS.
  ๐Ÿ”ธ macos_security – macOS Security Compliance Project.
  ๐Ÿ”ธ awesome-sec-talks – is a collected list of awesome security talks.
  ๐Ÿ”ธ Movies for Hackers – list of movies every hacker & cyberpunk must watch.
  ๐Ÿ”ธ Cryptography_1 – materials used whilst taking Prof. Dan Boneh Stanford Crypto course.
  ๐Ÿ”ธ Crypton – library to learn and practice Offensive and Defensive Cryptography.

โ–ช๏ธ Other

  ๐Ÿ”ธ Cheatography – over 3,000 free cheat sheets, revision aids and quick references.
  ๐Ÿ”ธ awesome-static-analysis – static analysis tools for all programming languages.
  ๐Ÿ”ธ computer-science – path to a free self-taught education in Computer Science.
  ๐Ÿ”ธ post-mortems – is a collection of postmortems (config errors, hardware failures, and more).
  ๐Ÿ”ธ build-your-own-x – build your own (insert technology here).
  ๐Ÿ”ธ Project-Based-Tutorials-in-C – is a curated list of project-based tutorials in C.
  ๐Ÿ”ธ The-Documentation-Compendium – various README templates & tips on writing high-quality documentation.
  ๐Ÿ”ธ awesome-python-applications – free software that works great, and also happens to be open-source Python.
  ๐Ÿ”ธ awesome-public-datasets – a topic-centric list of HQ open datasets.
  ๐Ÿ”ธ machine-learning-algorithms – a curated list of all machine learning algorithms and concepts.

Blogs/Podcasts/Videos  [TOC]

โ–ช๏ธ SysOps/DevOps

  ๐Ÿ”ธ Varnish for PHP developers – very interesting presentation of Varnish by Mattias Geniar.
  ๐Ÿ”ธ A Netflix Guide to Microservices – talks about the chaotic and vibrant world of microservices at Netflix.

โ–ช๏ธ Developers

  ๐Ÿ”ธ Comparing C to machine lang – compare a simple C app with the compiled machine code of that program.

โ–ช๏ธ Geeky Persons

  ๐Ÿ”ธ Brendan Gregg’s Blog – is an industry expert in computing performance and cloud computing.
  ๐Ÿ”ธ Gynvael “GynDream” Coldwind – is a IT security engineer at Google.
  ๐Ÿ”ธ Michaล‚ “lcamtuf” Zalewski – white hat hacker, computer security expert.
  ๐Ÿ”ธ Mattias Geniar – developer, sysadmin, blogger, podcaster and public speaker.
  ๐Ÿ”ธ Nick Craver – software developer and systems administrator for Stack Exchange.
  ๐Ÿ”ธ Scott Helme – security researcher, speaker and founder of and
  ๐Ÿ”ธ Brian Krebs – The Washington Post and now an Independent investigative journalist.
  ๐Ÿ”ธ Bruce Schneier – is an internationally renowned security technologist, called a “security guru”.
  ๐Ÿ”ธ Chrissy Morgan – advocate of practical learning, Chrissy also takes part in bug bounty programs.
  ๐Ÿ”ธ Andy Gill – is a hacker at heart who works as a senior penetration tester.
  ๐Ÿ”ธ Daniel Miessler – cybersecurity expert and writer.
  ๐Ÿ”ธ Samy Kamkar – is an American privacy and security researcher, computer hacker.
  ๐Ÿ”ธ Javvad Malik – is a security advocate at AlienVault, a blogger event speaker and industry commentator.
  ๐Ÿ”ธ Graham Cluley – public speaker and independent computer security analyst.
  ๐Ÿ”ธ Kacper Szurek – detection engineer at ESET.
  ๐Ÿ”ธ Troy Hunt – web security expert known for public education and outreach on security topics.
  ๐Ÿ”ธ – sysadmin specializing in building high availability cloud environments.
  ๐Ÿ”ธ Robert Penz – IT security expert.

โ–ช๏ธ Geeky Blogs

  ๐Ÿ”ธ Linux Audit – the Linux security blog about auditing, hardening and compliance by Michael Boelen.
  ๐Ÿ”ธ Linux Security Expert – trainings, howtos, checklists, security tools, and more.
  ๐Ÿ”ธ The Grymoire – collection of useful incantations for wizards, be you computer wizards, magicians, or whatever.
  ๐Ÿ”ธ Secjuice – is the only non-profit, independent and volunteer led publication in the information security space.
  ๐Ÿ”ธ Decipher – security news that informs and inspires.

โ–ช๏ธ Geeky Vendor Blogs

  ๐Ÿ”ธ Tenable Podcast – conversations and interviews related to Cyber Exposure, and more.
  ๐Ÿ”ธ Sophos – threat news room, giving you news, opinion, advice and research on computer security issues.
  ๐Ÿ”ธ Tripwire State of Security – blog featuring the latest news, trends and insights on current security issues.
  ๐Ÿ”ธ Malwarebytes Labs Blog – security blog aims to provide insider news about cybersecurity.
  ๐Ÿ”ธ TrustedSec – latest news, and trends about cybersecurity.
  ๐Ÿ”ธ PortSwigger Web Security Blog – about web app security vulns and top tips from our team of web security.
  ๐Ÿ”ธ AT&T Cybersecurity blog – news on emerging threats and practical advice to simplify threat detection.
  ๐Ÿ”ธ Thycotic – where CISOs and IT Admins come to learn about industry trends, IT security, and more.

โ–ช๏ธ Geeky Cybersecurity Podcasts

  ๐Ÿ”ธ Risky Business – is a weekly information security podcast featuring news and in-depth interviews.
  ๐Ÿ”ธ Cyber, by Motherboard – stories, and focus on the ideas about cybersecurity.
  ๐Ÿ”ธ Tenable Podcast – conversations and interviews related to Cyber Exposure, and more.
  ๐Ÿ”ธ Cybercrime Investigations – podcast by Geoff White about cybercrimes.
  ๐Ÿ”ธ The many hats club – featuring stories from a wide range of Infosec people (Whitehat, Greyhat and Blackhat).
  ๐Ÿ”ธ Darknet Diaries – true stories from the dark side of the Internet.
  ๐Ÿ”ธ OSINTCurious Webcasts – is the investigative curiosity that helps people be successful in OSINT.
  ๐Ÿ”ธ Security Weekly – the latest information security and hacking news.

โ–ช๏ธ Geeky Cybersecurity Video Blogs

  ๐Ÿ”ธ rev3rse security – offensive, binary exploitation, web app security, hardening, red team, blue team.
  ๐Ÿ”ธ LiveOverflow – a lot more advanced topics than what is typically offered in paid online courses – but for free.
  ๐Ÿ”ธ J4vv4D – the important information regarding our internet security.
  ๐Ÿ”ธ CyberTalks – talks, interviews, and article about cybersecurity.

Build your own DNS Servers

  ๐Ÿ”ธ Unbound DNS Tutorial – a validating, recursive, and caching DNS server.
  ๐Ÿ”ธ Knot Resolver on Fedora – how to get faster and more secure DNS resolution with Knot Resolver on Fedora.
  ๐Ÿ”ธ DNS-over-HTTPS – tutorial to setup your own DNS-over-HTTPS (DoH) server.
  ๐Ÿ”ธ dns-over-https – a cartoon intro to DNS over HTTPS.
  ๐Ÿ”ธ DNS-over-TLS – following to your DoH server, setup your DNS-over-TLS (DoT) server.
  ๐Ÿ”ธ DNS Servers – how (and why) i run my own DNS Servers.

Build your own Certificate Authority

  ๐Ÿ”ธ OpenSSL Certificate Authority – build your own certificate authority (CA) using the OpenSSL tools.
  ๐Ÿ”ธ step-ca Certificate Authority – build your own certificate authority (CA) using open source step-ca.

Build your own System/Virtual Machine

ย ย ๐Ÿ”ธย os-tutorialย – how to create an OS from scratch.
ย ย ๐Ÿ”ธย Write your Own Virtual Machineย – how to write your own virtual machine (VM).
ย ย ๐Ÿ”ธย x86 Bare Metal Examplesย – dozens of minimal operating systems to learn x86 system programming.
ย ย ๐Ÿ”ธย simple-computerย – the scott CPU from “But How Do It Know?” by J. Clark Scott.
ย ย ๐Ÿ”ธย littleosbookย – the little book about OS development.

Rajesh Kumar