Show HN: Stop playing my matchstick puzzles, start building your own in seconds https://bit.ly/4taqXSe

Show HN: Stop playing my matchstick puzzles, start building your own in seconds https://bit.ly/4tgz3Zz May 2, 2026 at 06:04AM

Show HN: MemHub, Turn Your GPT/Claude/Gemini History into LLM-Wiki Mindmap https://bit.ly/4wcqFNx

Show HN: MemHub, Turn Your GPT/Claude/Gemini History into LLM-Wiki Mindmap Hi, this is Tristan, CPO of XTrace. We are launching a very cool feature that is inspired by Andrey Karpathy's LLM Wiki mindmap. Let everyone who doesn't have enough sessions and markdowns made with claude code be able to visualize their own memory mindmap! https://bit.ly/4w5uP9M May 2, 2026 at 01:56AM

Show HN: Turn Docker Compose files into airgap-ready UDS Packages https://bit.ly/4ejcIa1

Show HN: Turn Docker Compose files into airgap-ready UDS Packages https://bit.ly/4eiFNSX May 1, 2026 at 10:25PM

Show HN: What happens when you load a webpage (Interactive) https://bit.ly/3QWt7ax

Show HN: What happens when you load a webpage (Interactive) https://bit.ly/3ONPYod April 27, 2026 at 08:26PM

Show HN: Gemini free tier is all you need https://bit.ly/3P1mt26

Show HN: Gemini free tier is all you need https://bit.ly/4n3cKFj May 1, 2026 at 12:45AM

Show HN: Code on the Go, an IDE for Android with On-Device Debugging (GPLv3) https://bit.ly/4ueQ3jI

Show HN: Code on the Go, an IDE for Android with On-Device Debugging (GPLv3) Hi HN, I’m Hal, the CTO at App Dev for All. I wanted to share a technical problem we worked on over the past year and how we approached it. We’ve been building Code on the Go, a full-featured IDE that runs entirely on an Android phone. No laptop, no ADB connection, no cloud build server. It compiles projects locally on the device using Gradle, supports Java and Kotlin with LSP, and includes a debugger that runs on the same phone as the app being tested. The most interesting and challenging part ended up being the debugger. The Android OS has a rigorous security model, which can get in the way of traditional inter-process communication. Android debugging assumes ADB, which assumes two machines. We bypassed ADB entirely, attaching the JDWP agent to the target process at launch and routing its output to our debugger over a local socket. We used a scoped adaptation of the Shizuku project to get the necessary system access without requiring root. We also had a few other technical challenges with Code on the Go: Sketch-to-UI (generates Android XML from a photo of a hand-drawn layout, runs fully offline with Yolo), an optional Gemini-powered coding agent (opt-in, requires your own API key), and a plugin system with isolated class loaders. One of our pre-release community members has used it to build and publish a Sinhala/English keyboard app to the Play Store, built entirely on his phone. This served as our test case for Play Store compatibility. We are a philanthropic venture. No ads, no tracking, no subscription. License is GPLv3. APK: https://bit.ly/4dgfOdH Source: https://bit.ly/423N8P1 Happy to answer questions on the implementation. https://bit.ly/3QGOTze April 30, 2026 at 11:17PM

Show HN: Qumulator – quantum circuit simulator, 1000 qubits, no GPU https://bit.ly/42IreRm

Show HN: Qumulator – quantum circuit simulator, 1000 qubits, no GPU https://bit.ly/3PeVmAR April 27, 2026 at 04:56PM

Show HN: SigMap – 81.1% retrieval hit 5, 96.9% token reduce,zero deps https://bit.ly/4tKdBNG

Show HN: SigMap – 81.1% retrieval hit 5, 96.9% token reduce,zero deps https://bit.ly/4eNihh2 April 30, 2026 at 02:02AM

Show HN: 49Agents – 2D Canvas IDE for Orchestrating Agents, Repos, Issues https://bit.ly/3Ou3X2s

Show HN: 49Agents – 2D Canvas IDE for Orchestrating Agents, Repos, Issues Beads tables (Steve Yegge's) for issue tracking. Can view git trees, terminals, issue tables, notes, and files all on one screen. Can connect multiple machines via private network (like tailscale) https://bit.ly/4cAathf April 29, 2026 at 12:34AM

Show HN: Auto-Architecture: Karpathy's Loop, Pointed at a CPU https://bit.ly/4cFm1Qq

Show HN: Auto-Architecture: Karpathy's Loop, Pointed at a CPU https://bit.ly/4n7Myt5 April 28, 2026 at 06:12PM

Show HN: I built another to do list. But it does a lot https://bit.ly/4cQE6JZ

Show HN: I built another to do list. But it does a lot https://apple.co/4wdvQwG April 28, 2026 at 11:58PM

Show HN: Waiting for LLMs Suck – Give your user a game https://bit.ly/3OQdJvQ

Show HN: Waiting for LLMs Suck – Give your user a game Give your user a game while they wait for the LLM to return a result. https://bit.ly/491Ugz5 April 28, 2026 at 03:45AM

Show HN: AgentSwift – Open-source iOS builder agent https://bit.ly/4eeI01F

Show HN: AgentSwift – Open-source iOS builder agent I'm working on a coding agent for building iOS apps. It's built on openspec and xcodebuildmcp. It's free and open source. https://bit.ly/4tAQRiS April 28, 2026 at 02:14AM

Show HN: 49Agents – Infinite canvas IDE for AI agents https://bit.ly/4ufNPAJ

Show HN: 49Agents – Infinite canvas IDE for AI agents https://bit.ly/4cAathf April 28, 2026 at 01:36AM

Show HN: The Unix Magic poster, annotated (updated) https://bit.ly/4tyhTHD

Show HN: The Unix Magic poster, annotated (updated) This is a site that maps the references on Gary Overacre's 1980s UNIX Magic poster to short write-ups with sources. I posted an earlier version about a year ago [1]. Since then I rewrote some of the annotations, added deep-linking to individual markers and a frame/sidebar view, gave the site a terminal-style redesign, and fixed historical inaccuracies (daemon etymology, nroff origin, B language vs. Multics, etc.). Contributions and comments welcome; each marker is a GitHub issue. site: https://bit.ly/4t3NxMh [1] https://bit.ly/4hUhSaK https://bit.ly/3EzK3xr April 27, 2026 at 02:32AM

Show HN: Logic Designer – Webapp https://bit.ly/4cOMnxY

Show HN: Logic Designer – Webapp i updated my digital logic webapp to 0.5.1 https://bit.ly/4tBIvI7 April 26, 2026 at 11:16PM

Show HN: AgentSwarms – free hands-on playground to learn agentic AI, no setup https://bit.ly/3OsfGi1

Show HN: AgentSwarms – free hands-on playground to learn agentic AI, no setup Show HN: AgentSwarms – free hands-on playground to learn agentic AI, no setup required! https://bit.ly/3P3Ugb1 April 26, 2026 at 09:34PM

Show HN: LLM-wiki – One command Karpathy's wiki with QMD search for Claude/Codex https://bit.ly/4sSjWVV

Show HN: LLM-wiki – One command Karpathy's wiki with QMD search for Claude/Codex https://bit.ly/4cD4abi April 25, 2026 at 11:29PM

Show HN: Draw Together Online https://bit.ly/3Or1yWh

Show HN: Draw Together Online A simple page where you can draw with other people. https://bit.ly/4uawVn2 April 26, 2026 at 03:36AM

Show HN: DDoS detection in 0.9s, tested against a 48 Gbps attack live https://bit.ly/4naExDX

Show HN: DDoS detection in 0.9s, tested against a 48 Gbps attack live https://bit.ly/4mTztU3 April 26, 2026 at 01:27AM