Hello Product Hunt! We’re different in the developer education segment in 3 main ways: ◆ First, we cater to people with programming experience. There are tons of introductory “learn to code” resources out there, but surprisingly little once you get past the basics. Good programmers want to get better and to develop in areas where they’re not strong yet, and that’s what we help with. ◆ Second, the coursework involves writing actual code instead of consuming videos. You handle concurrency, develop statecharts, traverse B-trees, etc. While we test against a fixed spec, you’re welcome to try different approaches. E.g in our Redis course, you could implement handling concurrent clients either using threads, or using an event loop. ◆ Third, instead of coding in the browser, you build these projects in your local dev environment. We create repositories for you to work out of, and you git push to run tests. The actual code can be written in your editor of choice (VSCode, Vim, Emacs, etc). This last point in particular — our git-based workflow — is something customers repeatedly tell us they enjoy. As open source contributors, we’ve always been interested in the internals of software we use day-to-day. We’ve learned how much hunger there is for a skill-building path that’s structured, fun, and focused on cool, well-known projects with serious technical dimensions. Jumping straight into the deep end as an open-source contributor has always been an option, but it’s daunting, if not intimidating. It can take a long time to get oriented in a major codebase, and mentorship isn’t always available. There’s a need for an intermediate approach with lessons that build technical expertise, and that’s where we fit in.

Thanks for hunting us @mwseibel, and hello Product Hunt. For @rohitpaulk and I, our desire to get really good at programming began 10 years back in Uni. One time we had the crazy idea to reimplement Git in Ruby (why not, right?). At that time we thought only some crazy genius types could build such a complex project. But not only did we build it, we also taught our friends. It turned out to be such an enriching experience that Paul and I became best friends over it. Years later, it's led to our first company together. Today, through CodeCrafters: ◆ Developers at companies like Apple & Vercel are mastering Rust, Go, Haskell, etc. ◆ Harvard & MIT students are mastering the internals of popular software (e.g Git) ◆ Companies like Rose Rocket (YC S16) are powering their up-skilling programs ◆ ... some engineering teams are even organising mini hackathons So how does it work? The basics are simple: 1. You choose a project from our catalog (e.g Build your own Git in Python) 2. We break it down for you into approachable features (aka. stages) 3. You implement each stage, and push code to get feedback And it gets more interesting from there: ◆ You can study others' implementations (with AI-assisted explanations) ◆ You can study the official source code (e.g the Redis source) for inspiration ◆ You can publish to GitHub, one click. Show off progress through gorgeous banners ◆ You can learn alongside your team, through private leaderboards and our Slack app We've built CodeCrafters with a lot of love. We'd love for you to try it, and tell us what you think. Can't wait to see you build.

Very cool, guys!

congrats on the launch! codecrafters has been a staple in my coding practice for the last 9 months now. as a vc, i don't get a *ton* of time to write code, but it's really important to me that i keep it up so that i can build & experiment with new technologies. codecrafters provides the perfect, byte-sized (no pun intended) challenges for me to complete so that i'm constantly keeping my skills sharp. when i studied cs in college, i was often frustrated at how theoretical everything felt. i didn't make a website until my senior year. i spent so much time learning data structures & algorithms, without actually learning how to build something real with them. codecrafters is different: it orients around the end-product and gives me a sense of accomplishment for building something real & useful. 11/10 recommend for anyone who wants to learn to code (start with the easy ones), up-level their coding abilities (try implementing a project in a new language), or just keep up their coding abilities with fun challenges. feature request: would love some more challenges that are less infra-y and more product-y. for example, i'd love to build my own cal.com, chatGPT, AI headshot generator, etc.

Congratulations, Paul. It looks wonderful. 😍

Bravo, @rohitpaulk and @sarupbanskota! CodeCrafters is an absolute game-changer for software engineers. I believe hands-on learning is the best way to truly understand complex tools. CodeCrafters seems like the perfect platform to recreate popular developer tools and dive deep into their code. Are all the courses made in-house or by external experts? How do you prioritize what courses will be launched next?

This is so cool! Could have used this 6 years ago when I was trying to suck less as a software engineer 😂. Good luck!

This looks pretty solid. Curious, which is your most popular challenge?

The user interface of the course platform is clean, intuitive, and easy to navigate. The courses are divided into well-organized modules, and the platform keeps track of your progress. Additionally, the platform provides integrated coding environments that eliminate the need for external tools, making the learning experience smooth and hassle-free Each module provides a step-by-step guide on building the tool from scratch, accompanied by real-time coding exercises and challenges. This hands-on experience would allow the user to actively apply the concepts and at the same time challenge themselves. This approach not only deepens your understanding of these tools but also allows you to gain expertise in multiple programming languages simultaneously Great job @sarupbanskota and @rohitpaulk for an awesome solution

Big fan of the CodeCrafters ideology and the team behind it :)

Why did you guys go with the `git push` workflow as the method for code submission? (as opposed to a web-based experience?)

Amazing work team! Congrats on the launch

Congratulations @rohitpaulk and @sarupbanskota. I'm a firm believer that one really learns from trouncing complexity. And what is more complex than the greatest software projects ever created. The problem today is that there are so many such projects that CodeCrafters is needed to collect the best ones and isolate the most ground breaking and essential parts of their codebases.

Congratulations to @rohitpaulk and @sarupbanskota on the spectacular launch! 🥳 I was fortunate to have access to an early preview version of the product, and I genuinely enjoyed working through the numerous challenges. They were engaging and well-crafted - precisely what you would expect from such a comprehensive solution. For me, the best way to learn a new programming language is by building something in that language. CodeCrafters absolutely excels in this area, providing the ideal platform for hands-on learning. I found my programming skills enhanced thanks to the variety and real-world applicability of the challenges presented. ✌️ Another feature that sets CodeCrafters apart is the ability to complete challenges using your own familiar tools that you would be using in your work, such as your preferred IDE and Git. It speeds up learning and provides a seamless experience. I am curious whether the team plans to add any social features for community learning and collaboration. I believe that incorporating such interactive elements could bolster the overall experience and foster a sense of camaraderie among learners. Overall, I'm incredibly impressed with CodeCrafters and see it as a must-have resource for anyone looking to up-skill or learn a new programming language. Cheers to Rohit and Sarup on crafting this fantastic platform, and best of luck with everything moving forward!

Nicely done! 💯

This is awesome, great work @sarupbanskota !

CodeCrafters is just amazing. You can pick skills on many languages by building real world applications in controlled stages. Helped me a great way to pick up my Rust skills.

I’m a big fan of Codecrafters. Their challenges are unique and amazing. Trying to build sqlite db or git was something I was trying a lot to do by myself. So having codecrafters made it easy for me to approach it step by step. Kudos to the team and best of luck with what comes next!

Amazing! What kind of engineers is this a best fit for? People just starting out?

Congrats on the launch! I have been working through CodeCrafters with my friends during my time at Recurse Center, programming for the joy of programming. Incredibly fun way to learn to build fundamental technologies from scratch. As an engineer, I am always into taking my tools apart, understanding the individual building blocks for what they are, and putting it them back together. CodeCrafters is where I go to put them back together in a guided way that keeps me motivated and enthusiastic. CodeCrafters is a tool I often draw on in my journey in becoming a dramatically better programmer. Thank you for making CodeCrafters!