Hack Club
Lambda School
Enlight
Hack Club Bank
ipinfo.io
Woz U
100 Days of Code
Microverse
CodeTrain
LeetCode
Codecademy
TripleTen
Udemy
Udemy for Business
Scrimba
W3Schools
CodeTrain is a hands-on AI trainer for developers.
Instead of writing code for you, it turns any question, repo context, or onboarding task into a short lesson on your own codebase: two to six small steps, each one typed by you in an editor with an instant run/test loop. The tutor grades every step, asks Socratic questions when you miss, and shrinks the step when you're stuck.
Pro adds repo mode with a single reviewable patch-back of the code you wrote; Team adds ramp dashboards and onboarding journeys. Free tier runs in the browser, ten sessions a month, no card. Github link to the free skill is provided.
Hack Club CodeTrainCodeTrain's answer:
CodeTrain is an AI coding tutor that never writes the code for you, and that refusal is built into the architecture rather than a system prompt. It plans a short lesson from your own codebase (in repo mode), sets up 2 to 6 tiny steps, runs the code you type, and grades every step against explicit criteria. When you get stuck it shrinks the step or sharpens the hint. There is no code-generation path to talk it out of, which is the part every chat-based tutor gets wrong.
CodeTrain's answer:
Coding assistants like Copilot and Cursor are built to produce code. CodeTrain is built to produce engineers who actually understand the code. Learning platforms like Codecademy teach generic curriculum and measure completion, but they never touch the codebase you actually work in. Chat tutors hand you the answer if you ask persistently enough. CodeTrain grades what you typed, on your own repo, and the answer never comes for free. Use it alongside your assistant, not instead of it.
CodeTrain's answer:
Developers who use AI assistants daily and can feel their understanding of their own systems slipping. Junior engineers who ship AI-written diffs they couldn't rewrite. And engineering managers who want new hires ramped on the team's real codebase, with a dashboard showing who's progressing, who's over-relying on skips, and what each seat costs.
CodeTrain's answer:
I was building InferHaven, a privacy-first AI dev workspace company, and caught myself approving AI-written diffs I could not have rewritten from scratch. InferHaven exists so teams don't hand their code to vendors; CodeTrain extends the same instinct to the second thing quietly leaving the building, the skill in engineers' heads. So I built the opposite of an assistant: a tutor that plans, runs, and grades, but never types your solution. It launched publicly in Julyย 2026.
CodeTrain's answer:
FastAPI and PostgreSQL on the backend, primarily Claude models for tutoring, CodeMirror for the editor, and Pyodide so free-tier Python and JavaScript run entirely in the learner's browser. Shell and other runtimes execute in isolated server sandboxes. Clerk handles auth, Stripe handles billing, and bring-your-own-key support covers Anthropic, OpenRouter, Bedrock, Vertex, and Ollama.
CodeTrain's answer:
Too new to drop names honestly: CodeTrain launched publicly in Julyย 2026. Early users are individual developers on the free and Pro tiers, with the first team pilots in progress. If a public logo matters to you, check back in a quarter.
Based on our record, Hack Club seems to be more popular. It has been mentiond 37 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Draco is a Hack Club (https://hackclub.com) YSWS (You Ship We Ship) โ teenagers build a working server side web framework from scratch. Ship it, and we send you a mechanical keyboard + SSD. The idea came from building Beasty โ my own HTTP server from raw TCP. The moment you parse your first request line by hand and a browser actually responds, something clicks. You stop thinking of HTTP as magic and start thinking... - Source: Hacker News / 3 months ago
Email: hi@skyfall.dev Hi! Iโm a high-school student looking for a part-time role or internship at a company building something ambitious. I learn quickly, thrive in small teams (see below!) and love taking projects from idea to shipped product. I currently volunteer for a nonprofit (for teens into STEM) called Hack Club [1], have ran programs there, and have also worked on some of their flagship programs - in... - Source: Hacker News / 9 months ago
It's really easy to join! There are lots of cool programs currently running. Maybe wait until next week so the migration is done, but do check our website: https://hackclub.com (we have/had 100k people in the Slack). - Source: Hacker News / 10 months ago
I was ready to be unsympathetic - too bad for the company - but then I read TFA and it's a rug pull on a nonprofit teaching coding to kids.... https://hackclub.com/ (They do help clubs sell things, taking "7% of income", so they do have a revenue stream, but the money that Slack wants would pay a veritable army of student interns.). - Source: Hacker News / 10 months ago
I wanted to thank Hack Club and GitHub Education for the motivation they give us high-schoolers to code, to learn new things and to create amazing projects together. If you are a high-schooler and a programmer, I highly suggest you to join Hack Club in order to find more people with the same passions as you and to apply for the GitHub Education pack to get a series of tools to elevate your coding skills. I'm sure... - Source: dev.to / almost 2 years ago
Lambda School - A full Computer Science education - free until you get a job
LeetCode - Practice and level up your development skills and prepare for technical interviews.
Enlight - Performance and Error Monitoring. We keep an eye on your applications and notify you about performance issues and errors.
Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, weโve taught over 45 million people using a tested curriculum and an interactive learning environment.
Hack Club Bank - Non-profit bank account for high school hackathons
TripleTen - TripleTen: online part-time coding bootcamps.
