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[Other] Show HN: Xcc700: Self-hosting mini C compiler for ESP32 (Xtensa) in 700 lines Repo: <a href="https:&#x2F;&#x2F;github.com&#x2F;valdanylchuk&#x2F;xcc700" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;valdanylchuk&#x2F;xcc700</a><p>Hi Everyone! I just wrote my first compiler!<p>- single pass, recursive descent, direct emission<p>- generates REL ELF binaries, runnable using ESP-IDF elf_loader<p>- very basic features only, just enough for self-hosting<p>- treats the Xtensa CPU as a stack machine for simplicity, no register allocation &#x2F; window usage<p>- compilable on Mac, probably also Linux, can cross-compile for esp32 there<p>- wrote for fun &#x2F; cyberdeck project<p>Sample output from esp32:<p><pre><code> xcc700.elf xcc700.c -o &#x2F;d&#x2F;cc.elf [ xcc700 ] BUILD COMPLETED &gt; OK &gt; IN : 700 Lines &#x2F; 7977 Tokens &gt; SYM : 69 Funcs &#x2F; 91 Globals &gt; REL : 152 Literals &#x2F; 1027 Patches &gt; MEM : 1041 B .rodata &#x2F; 17120 B .bss &gt; OUT : 27735 B .text &#x2F; 33300 B ELF [ 40 ms ] &gt;&gt; 17500 Lines&#x2F;sec &lt;&lt; </code></pre> My best hope is that some fork might grow into a unique nice language tailored to the esp32 platform. I think it is underrated in userland hobby projects.

[Other] Unix "find" expressions compiled to bytecode

[Other] Show HN: Domain Search MCP – AI-powered domain availability checker MCP (Model Context Protocol) server that lets AI assistants check domain availability in real-time.<p>Features: - Multi-source: Porkbun, Namecheap, RDAP, WHOIS - Price comparison across registrars - Social handle checking (GitHub, Twitter, npm, etc.) - Premium domain detection with pricing insights<p>Works with any MCP-compatible client.<p>Install: npx -y domain-search-mcp

[Other] Show HN: A Claude Code plugin that catch destructive Git and filesystem commands

[Other] Show HN: Aroma: Every TCP Proxy Is Detectable with RTT Fingerprinting TL;DR explanation (go to <a href="https:&#x2F;&#x2F;github.com&#x2F;Sakura-sx&#x2F;Aroma?tab=readme-ov-file#tldr-explanation" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Sakura-sx&#x2F;Aroma?tab=readme-ov-file#tldr-e...</a> if you want the formatted version)<p>This is done by measuring the minimum TCP RTT (client.socket.tcpi_min_rtt) seen and the smoothed TCP RTT (client.socket.tcpi_rtt). I am getting this data by using Fastly Custom VCL, they get this data from the Linux kernel (struct tcp_info -&gt; tcpi_min_rtt and tcpi_rtt). I am using Fastly for the Demo since they have PoPs all around the world and they expose TCP socket data to me.<p>The score is calculated by doing tcpi_min_rtt&#x2F;tcpi_rtt. It&#x27;s simple but it&#x27;s what worked best for this with the data Fastly gives me. Based on my testing, 1-0.7 is normal, 0.7-0.3 is normal if the connection is somewhat unstable (WiFi, mobile data, satellite...), 0.3-0.1 is low and may be a proxy, anything lower than 0.1 is flagged as TCP proxy by the current code.

[Other] URL Pattern API

[Other] Show HN: Pivor, Open source self-hosted CRM I built Pivor because I wanted a simple, self-hosted CRM without cloud lock-in or per-seat pricing.<p>Features: Clients, Contacts, Communications tracking (emails, calls, meetings, tasks), dark mode.<p>Stack: Laravel 12, Livewire 3, Tailwind CSS 4. Runs on SQLite by default, supports MySQL&#x2F;PostgreSQL. Docker ready.<p>AGPL-3.0 licensed.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;Lexaro-Software&#x2F;pivor" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Lexaro-Software&#x2F;pivor</a><p>Looking for feedback!

[Other] Show HN: I built an OCI container runtime in Python(for fun)

[Other] Show HN: One clean, developer-focused page for every Unicode symbol I’m building a Unicode reference where each symbol has its own dev-friendly page with all relevant encodings.<p>Example: [<a href="https:&#x2F;&#x2F;fontgenerator.design&#x2F;symbol&#x2F;almost-equal-to" rel="nofollow">https:&#x2F;&#x2F;fontgenerator.design&#x2F;symbol&#x2F;almost-equal-to</a>](<a href="https:&#x2F;&#x2F;fontgenerator.design&#x2F;symbol&#x2F;almost-equal-to" rel="nofollow">https:&#x2F;&#x2F;fontgenerator.design&#x2F;symbol&#x2F;almost-equal-to</a>)<p>Includes Unicode, HTML, CSS, JS, UTF-8&#x2F;16 bytes, URL encoding, and usage examples.<p>The same structure is used across thousands of symbols (math, arrows, currency, tech&#x2F;UI, punctuation).<p>Built because existing references are fragmented. Feedback welcome.

[IDE/Editor] Show HN: Browser Based IDE for Love2D

[Other] Self-referencing Page Tables for the x86-Architecture

[Other] Worry Less, Contribute More ossium - Your foundation for discovering & managing the best open source projects in seconds. Free OSS discovery platform for developers. Browse GitHub repositories & trending projects.

[Other] Python Quick Tools – 20+ Easy Automation Scripts Save time daily with these simple, ready-to-run Python scripts! Perfect for beginners or anyone tired of repetitive tasks. What's inside (20+ scripts): • File & folder automation (rename, organize, find duplicates, backup) • Data & CSV helpers (clean files, count words) • Useful utilities (QR codes, passwords, image resizing) • Fun & quick tools (games, calculators, converters)

[DevOps] Build Docker homelabs the right way — no magic, no lock-in SANCTUM is a homelab generator that produces clean, production-ready Docker Compose setups. Choose the services you want, detect conflicts automatically, and get a setup you fully own and understand. No opinionated stacks, no hidden magic, no lock-in. Start free with up to 3 services, or subscribe for unlimited services and continuous updates. Built for developers, homelabbers, and anyone who wants Docker done right.

[Other] Launch Brawser Extension This AI-powered extension generates YouTube chapters with timestamps in one click. It scans your video, creates clear, search-optimized chapter titles, and lets you copy them directly into the description. It works even without subtitles and helps improve navigation, watch time, and search visibility for long videos.

[Other] Show HN: Vibium – Browser automation for AI and humans, by Selenium's creator i started the selenium project 21 years ago. vibium is what i&#x27;d build if i started over today with ai agents in mind. go binary under the hood (handles browser, bidi, mcp) but devs never see it. just npm install vibium. python&#x2F;java coming. for claude code: claude mcp add vibium -- npx -y vibium v1 ships today. ama.

[Other] Show HN: I built an open-source Linux-capable single-board computer with DDR3 I&#x27;ve made an ARM based single-board computer that runs Android and Linux, and has the same size as the Raspberry Pi 3!<p>Why? I was bored during my 2-week high-school vacation and wanted to improve my skills, while adding a bit to the open-source community :P<p>These were the specs I ended up with: - H3 SoC - Quad-Core Cortex-A7 ARM CPU @ 1.3GHz - Mali400 MP2 GPU @ 600MHz - 512MiB of DDR3 RAM (Can be upgraded to 1GiB) - WiFi, Bluetooth &amp; Ethernet PHY - HDMI display port - 1080p resolution - 5x USB Slots: 2x USB-A, 1x USB-C Host, 1x USB-C Host &amp; OTG, 1x USB-C PD for power (Negotiating up to 25W. No power socket, yay!) - 32 GB of eMMC 5.1 storage (Optional) - 3.5mm audio jack - SD Card slot - Lots of GPIO<p>I&#x27;ve picked the H3 CPU mainly for its low cost yet powerful capabilities, and it&#x27;s pretty well supported by the Linux kernel. Plus, I couldn&#x27;t find any open-source designs with this chip, so I decided to contribute a bit and fill the gap.<p>A 4-layer PCB was used for its lower price and to make the project more challenging, but if these boards are to be mass-produced, I&#x27;d bump it up to 6 and use a solid ground plane as the bottom layer&#x27;s reference plane. The DDR3 and CPU fanout was truly a challenge in a 4-layer board.<p>The PCB was designed in KiCAD and open-source on the Github repo with all the custom symbols and footprints (<a href="https:&#x2F;&#x2F;github.com&#x2F;cheyao&#x2F;icepi-sbc" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;cheyao&#x2F;icepi-sbc</a>). You can also check it out online with kicanvas: <a href="https:&#x2F;&#x2F;kicanvas.org&#x2F;?github=https%3A%2F%2Fgithub.com%2Fcheyao%2Ficepi-sbc%2Ftree%2Fmain%2Fhardware" rel="nofollow">https:&#x2F;&#x2F;kicanvas.org&#x2F;?github=https%3A%2F%2Fgithub.com%2Fchey...</a><p>At large quantities, the price can probably reach less than 20$! (exc. taxes, tariffs and other costs)<p>It has been a wild journey, even making me learn how to use crypto as I needed to pay someone to download some &quot;confidential&quot; files from a baidu drive...<p>Read about more details on Github! Everything is open-source under the Solderpad license, aka do what you want: sell it, build it, modify it! :-)

[Database] Distributed reliable key-value store for the most critical data of a distributed system

[Other] Developer tools for Next.js Free online tools for developers and IT professionals. Access a wide range of handy tools including converters, generators, validators, and analyzers with excellent user experience.

[Other] Show HN: Cosmofy – bundle your Python code for Linux/Windows/MacOS Bundle up a pure python project into a single Cosmopolitan Python file that runs on Linux&#x2F;Mac&#x2F;Windows with no changes.