nowfound

Growth · May 9, 2026

FC

Free C course called "C Systems Lab"

C Systems Lab is a free interactive web course that walks through 10 modules of systems programming in C: compilation, pointers, dynamic memory, structs, the preprocessor, file I/O, processes and signals, sockets, concurrency, and a tour below C. The free course itself is the link. Get the free sample of the PDF by adding "/demo" to the link. Since I don't necessarily like the paywall aspect of it, you may ask me for the complete edition by reaching out via email. Happy to answer questions about the content or the curriculum design.

Free C course called "C Systems Lab" launched on May 9, 2026 with 6 votes, #1,742 of 20,538 launches that month and more than 75% of that year's launches.

Visit csystemslab.com ↗Alternativestop 8% of May 2026

Does a similar job

all alternatives →
  • LC
    Learn C and its lower levels interactively, in the browser2019 · ▲356

    I made a simple virtual machine that runs C in the browser.This project is made as an experiment to see if C can be learned easier if the lower level is covered in paralel. Sandbox: https://vasyop.github.io/miniC-hosting Tutorial part 1: https://vasyop.github.io/miniC-hosting/?0 More info: https://github.com/vasyop/miniC-hosting/blob/master/README.md Please support this project: https://github.com/vasyop/miniC-hosting/blob/master/support.md

  • GI
    Going into freshman year, figured I should build an interpreter2023 · ▲138

    Hi all! I'm going into my freshman year, and figured that the best way to prepare for the intro to programming Racket course would be to implement my own garbage-collected, dynamically typed, functional programming language in C ;) Anyways... here's the repo: https://github.com/liam-ilan/crumb I started learning C over the summer, so I still have a whole lot to learn... Any feedback would be greatly appreciated! :D

  • IM
    I'm writing a free book called Computer Networks from Scratch2022 · networksfromscratch.com · ▲792
  • Low-Level Academy, an explorable systems programming course2020 · lowlvl.org · ▲419

    Introduction to UDP: sockets, frames, and data encoding. We build a Rust client for a simple name server that converts domain names into IP addresses.

  • C From Scratch – Learn safety-critical C with prove-first methodologyJan 2026 · github.com · ▲72

    Seven modules teaching C the way safety-critical systems are actually built: MATH → STRUCT → CODE → TEST. Each module answers one question: Does it exist? (Pulse), Is it normal? (Baseline), Is it regular? (Timing), Is it trending? (Drift), Which sensor to trust? (Consensus), How to handle overflow? (Pressure), What do we do about it? (Mode). Every module is closed (no dependencies), total (handles all inputs), deterministic, and O(1). 83 tests passing. Built this after 30 years in UNIX systems. Wanted something that teaches the rigour behind certified systems without requiring a decade of…

  • C0D3 – A free, interactive site to learn coding2020 · c0d3.com · ▲261

    Learn the foundations to be a full stack software engineer. 100% free.

More growth this month

the category →
  • wallhop is a free paywall bypass. Paste any article link to read it without paywall popups, ads or clutter. No signup, no extension. A simple 12ft.io alternative.

    Growth · 13d ago · wallhop.io

  • Prefer▲201

    The execution layer for AEO

    Growth · 24d ago · tryprefer.com

  • MakerMap▲197

    A living map of makers and what they’re building

    Growth · 28d ago · makermap.lol

Source: Show HN post ↗

Launched alongside, May 2026

the whole month →
  • Brew ▲900

    Like Claude design for email marketing

    AI · May 2026 · brew.new

  • Parallel agents, diff reviewer, and multi-model comparisons

    Dev tools · May 2026 · kilo.ai

  • StoreClaw▲806

    Grow your store profits with agents that know how to sell

    AI · May 2026 · storeclaw.ai

  • Give your agent a real number and voice to make calls.

    AI · May 2026 · pollyreach.ai

  • Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

    Life & fun · May 2026 · github.com

  • 🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

    Dev tools · May 2026 · github.com