9 Best System Design GitHub Repos & Resources

3. karanpratapsingh/system-design: a structured, course-style read

Primers and lists are reference material. If you want something closer to a course you read front to back, karanpratapsingh/system-design is the best option. It is a free, well-organized, book-style set of notes arranged in chapters, moving from fundamentals through to specific technologies and patterns. The progression is deliberate, which makes it friendlier for someone newer to the topic than a loose collection of links.

Awesome system design resources: the curated lists worth bookmarking

A few repositories are not content themselves but high-quality maps to content elsewhere. In GitHub convention these are the "awesome" lists, and three stand out for system design.

4. ashishps1/awesome-system-design-resources

ashishps1/awesome-system-design-resources is the most popular of the recent curated lists, covering core concepts, common interview problems, and learning resources. It is actively maintained, which makes it a reliable modern starting point when you want one page that links out to everything.

5. binhnguyennus/awesome-scalability

binhnguyennus/awesome-scalability is a large, well-maintained list of articles, conference talks, and real-world architecture write-ups focused on scalability and distributed systems. It is the place to go when you want to see how real companies solved real scaling problems, not just the theory.

6. madd86/awesome-system-design

madd86/awesome-system-design is another solid curated list of distributed systems resources. Worth noting: lists like this one openly point to structured paid courses alongside the free material, which is a fair signal that the community sees value in both.

7. checkcheckzz/system-design-interview: interview-focused practice

checkcheckzz/system-design-interview is one of the older and broadest collections of system design interview links and company examples. It is comprehensive, but worth a small caution: it is less actively maintained than the others here, so some links and examples are dated. Use it for breadth, not as your only source.

8. chiphuyen/machine-learning-systems-design: ML system design

System design in 2026 is not only about the classic web-scale problems. chiphuyen/machine-learning-systems-design, by Chip Huyen, focuses on designing machine learning systems: data, training, deployment, and monitoring. If you are interviewing for a role where ML system design comes up, this fills a gap the classic primers do not cover.

9. kilimchoi/engineering-blogs: learn from real systems

For the most grounded learning of all, kilimchoi/engineering-blogs is a curated list of engineering blogs from real companies. It is not a course, but reading how teams actually built and scaled their systems is one of the best ways to develop genuine intuition.

Is Grokking System Design on GitHub?

One of the most common searches in this space is for "Grokking System Design" on GitHub, so it is worth being precise.

Yes, there is now an official repository: design-gurus/grokking-system-design, published by DesignGurus.io as the free, open companion to the course. It contains the pattern cheat sheets, the interview framework, question catalogs, and study roadmaps, and it is kept current by the team behind the original material.

Be careful with everything else. The other "grokking" repositories you will find are unofficial copies that scrape or summarize a much older, text-only edition of the course. They are incomplete and out of date, the same issue that affects the PDF copies floating around. If you want the free GitHub version, use the official repo. The full, interactive, current version of the course lives on DesignGurus.io.

How to actually use these repositories

The most common mistake is collecting. People star fifteen repositories and read none of them deeply. A better approach:

• Pick one primer as your spine. For fundamentals that is the System Design Primer; for interview patterns it is the official Grokking repo. Work through it properly.
• Reinforce, don't hoard. Use the structured repos to revisit concepts that do not click on the first read.
• Go deep, not wide. Use the awesome lists and engineering blogs to go deep on two or three topics, rather than skimming all of them.
• Practice actively. Take a problem, design it on paper or a whiteboard, and explain your design out loud. Reading about system design and being able to do it under interview conditions are two different skills.

Where GitHub stops being enough

GitHub will take you a long way, and for many people it is enough. But it has real limits. There is no fixed sequence, so it is easy to learn things out of order, or skip something important without realizing it. There are no worked, end-to-end interview walkthroughs that show how an experienced engineer reasons in real time. And critically, there is no feedback. Nothing on GitHub tells you whether the design you just produced would actually pass an interview.

That is the gap a structured course fills. If you want a deliberate path, full case studies worked start to finish, and a curriculum kept current specifically for interviews, the Grokking the System Design Interview course is built for exactly that. It is not a replacement for reading widely on GitHub. It is the structure that makes the reading add up.

Common questions

What is the best GitHub repo for system design? For most people, donnemartin/system-design-primer is the best single repository for fundamentals. For interview preparation specifically, pair it with the official design-gurus/grokking-system-design repo, which organizes the material around reusable patterns.

Is Grokking System Design on GitHub? Yes. The official free companion repo is design-gurus/grokking-system-design, published by DesignGurus.io. Other "grokking" repositories are unofficial copies of an outdated edition. The current interactive course is on DesignGurus.io.

What is awesome-system-design-resources? ashishps1/awesome-system-design-resources is a popular, actively maintained curated list on GitHub that links to system design concepts, interview problems, and learning material. It is a map to content rather than content itself, so use it to find resources, then study one deeply.

Is the System Design Primer enough to prepare for interviews? It is an excellent foundation and covers the core concepts well. What it does not give you is a fixed study sequence, fully worked interview case studies, or any feedback on your own designs. Many people pair it with a structured course for those.

Are free GitHub resources enough to learn system design in 2026? For building background knowledge, yes. For interview readiness, usually not on their own: you also need a sequence, worked case studies, and practice with feedback, which is where a structured course or mock interviews come in.

Bottom line

GitHub is one of the best free resources for learning system design, as long as you treat it as a library rather than a syllabus. Start with the System Design Primer, use the official Grokking System Design repo as your interview-prep spine, go deep with the awesome lists and engineering blogs, and practice designing systems out loud. When you want a sequence, worked case studies, and a curriculum built for interviews, that is where a structured course like Grokking the System Design Interview earns its place.