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[Other] Show HN: An open-source email archiver with full-text search capabilities Hey HN,<p>I’d like to share an open-source project I’ve created. It is an email archiving tool that can back up your whole email system with full-text search capabilities.<p>The project is called Open Archiver, and it is able to archive and index emails from cloud-based email inboxes, including Google Workspace, Microsoft 365, and any IMAP-enabled email inbox. You can connect it to your email provider, and it copies every single incoming and outgoing email into a secure archive that you control (Your local storage or S3-compatible storage).<p>Some features:<p>- Archive and index all emails and attachments<p>- Import and sync the whole organization&#x27;s emails: For Google Workspace and MS 365, Open Archiver can ingest all individual inboxes&#x27; emails<p>- PST and .eml files import<p>- Role-based access<p>- Full-text search: All archived emails and attachments are indexed, so you can search the content of all emails and attachments<p>- You can choose to store your files either on your local machine or on any S3-compatible storage provider<p>- API access<p>It&#x27;s AGPL-3.0 licensed and free to use for personal and business purposes. I&#x27;d be happy if you could give it a try and give me some feedback.<p>You can find the project on GitHub (with Demo site): <a href="https:&#x2F;&#x2F;github.com&#x2F;LogicLabs-OU&#x2F;OpenArchiver" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;LogicLabs-OU&#x2F;OpenArchiver</a>

[Other] Show HN: I integrated Ollama into Excel to run local LLMs I built an Excel add-in that connects to Ollama, so you can run local LLMs like Llama3 directly inside Excel. I call it XLlama.<p>You can use it like a regular formula: =XLlamaPrompt(&quot;Is Excel a database&quot;) or run it on an entire range.<p>No API calls. No cloud. No subscriptions. Everything runs locally.<p>It’s useful for quick tasks like extracting names, emails, or phone numbers from text, or for doing light data analysis without leaving Excel.<p>Would love feedback, especially from people who use Excel daily.

[Other] Show HN: Bolt – A super-fast, statically-typed scripting language written in C I&#x27;ve built many interpreters over the years, and Bolt represents my attempt at building the scripting language I always wanted. This is the first public release, 0.1.0!<p>I&#x27;ve felt like most embedded languages have been moving towards safety and typing over years, with things like Python type hints, the explosive popularity of typescript, and even typing in Luau, which powers one of the largest scripted evironments in the world.<p>Bolt attempts to harness this directly in the lagnauge rather than as a preprocessing step, and reap benefits in terms of both safety and performance.<p>I intend to be publishing toys and examples of applications embedding Bolt over the coming few weeks, but be sure to check out the examples and the programming guide in the repo if you&#x27;re interested!

[Other] Flintlock – Create and manage the lifecycle of MicroVMs, backed by containerd

[Other] Show HN: Engineering.fyi – Search across tech engineering blogs in one place I built a search engine for engineering blogs because I was tired of manually checking individual company blogs to find real-world production examples.<p>The problem: When learning a new technology, the best insights often come from how companies like Google, Meta, or Stripe actually implement it in production. But these gems are scattered across dozens of separate engineering blogs with no way to search across them.<p>What I built: Engineering.fyi indexes engineering blogs from ~15 companies (Google, Meta, OpenAI, Anthropic, Stripe, Uber, etc.) and makes them searchable in one place. You can filter by topic, difficulty level, and whether articles include code samples.<p>Technical details: - Built with Next.js, SQLite, DrizzleORM - Custom scrapers for each blog (they&#x27;re all frustratingly different) - Basic tagging system using content matching (still improving this)<p>Current status: Core search is working. Adding new blogs weekly as I index them.<p>Next features (based on early feedback): - AI summaries for quick article previews - Weekly digest of trending engineering insights - Save&#x2F;bookmark articles (considering whether to add accounts)<p>Interesting challenges: - Each blog requires custom parsing logic (no standard format) - Building an accurate tagging system is harder than expected – started with exact matching but exploring better approaches<p>I&#x27;d love feedback on: - Which company engineering blogs you&#x27;d find most valuable to include - Whether AI summaries would actually be useful or just noise - How you currently discover engineering articles from these companies

[Other] POML: Prompt Orchestration Markup Language

[Other] Ch.at – a lightweight LLM chat service accessible through HTTP, SSH, DNS and API

[Other] An AI-first program synthesis framework built around a new programming language

[Other] ESP32 Bus Pirate 0.5 – A hardware hacking tool that speaks every protocol ESP32 Bus Pirate is an open-source firmware that turns your device into a multi-protocol hacker&#x27;s tool, inspired by the legendary Bus Pirate.<p>It supports sniffing, sending, scripting, and interacting with various digital protocols (I2C, UART, 1-Wire, SPI, etc.) via a serial terminal or web-based CLI.<p>Modes for:<p>- HiZ (default) - I2C (scan, glitch, slave mode, dump) - SPI (flash, sdcard, slave mode) - UART &#x2F; Half-Duplex UART (bridge, read, write) - 1-WIRE (ibutton, temp sensor) - 2WIRE (smartcard) &#x2F; 3WIRE (eeprom) - DIO (Digital I&#x2F;O, read, pullup, set) - Infrared (device-b-gone, send and receive) - USB (HID, mouse, keyboard, gamepad, storage) - Bluetooth (BLE HID, scan, spoofing, sniffing) - Wi-Fi (scan, AP, connect, sniff, deauth) - JTAG (scan pinout, SWD) - LED control (animations, set LEDs) - I2S - CAN<p><a href="https:&#x2F;&#x2F;github.com&#x2F;geo-tp&#x2F;ESP32-Bus-Pirate" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;geo-tp&#x2F;ESP32-Bus-Pirate</a>

[Other] How to safely escape JSON inside HTML SCRIPT elements

[Other] Build durable workflows with Postgres

[IDE/Editor] Efrit: A native elisp coding agent running in Emacs

[Other] Show HN: Selfhostllm.org – Plan GPU capacity for self-hosting LLMs A simple calculator that estimates how many concurrent requests your GPU can handle for a given LLM, with shareable results.

[Code Quality] Byte Buddy is a code generation and manipulation library for Java

[Other] Show HN: BaaS to build agents as data, not code Agents and workflows as data instead of code.<p>Julep is a backend-as-a-service to build agents and workflows. Main features:<p>1. Experimentation Velocity:<p>With most agent frameworks, agents are code that need to be deployed. To iterate on the prompts or update the agent, you need to make changes to the code and deploy it to your server. This makes agents hard to iterate on quickly. But with agents and tasks declared as data, all that happens in the background is make an api call to update or make a new entry in the database. This increases the experimentation velocity.<p>2. Scalability and long-running background tasks:<p>Scaling is a hard software engineering problem and the solution is to define large scale systems to be distributed, stateful and scalable. Agents as data is a very helpful paradigm because you have to solve for this problem only once at the orchestrator level. Julep can handle 100s of thousands of executions paralely.<p>3. Updating an agent &#x2F; User Personalization:<p>Tools such as create agent, update agent etc. can update the agent recursively. Let’s assume an agent is chatting with a user and mentions that they only like to communicate in a professional tone. The agent can call a tool to &#x27;update the agent&#x27; and modify&#x2F;update the instructions to include that the user only likes to communicate in a professional tone.<p>This was the reason to create a backend when the market was flooded with agent frameworks. In Julep, you can declare a workflow in YAML, and it can automatically scale Millions of users.

[Other] Open SWE: An open-source asynchronous coding agent <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=TaYVvXbOs8c" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=TaYVvXbOs8c</a><p><a href="https:&#x2F;&#x2F;github.com&#x2F;langchain-ai&#x2F;open-swe" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;langchain-ai&#x2F;open-swe</a>

[Other] Docker for Developers: Essential Commands in One Cheatsheet

[Other] Show HN: Synchrotron, a real-time DSP engine in pure Python Yes, Python.<p>I can already hear the screams from the rafters telling me how terrible of a choice Python is - but in my case, I valued modularity, extensibility, <i>hackability</i> over raw performance. (It was also a challenge to myself to see how far I can get without referencing existing implementations)<p>Synchrotron processes nodes: simple Python classes with typed I&#x2F;O and a render() method for processing. It can be as concise as 5 lines:<p><pre><code> class IncrementNode(Node): input: StreamInput output: StreamOutput def render(self, ctx): self.out.write(self.a.read(ctx) + 1) </code></pre> Nodes can then be spawned and linked programmatically or in the graphical editor. Synchrotron handles the rest at runtime. Besides the web UI, you can also interact with the engine via Python, REST, DSL, or standalone TUI.<p>Currently you can build synths, FX chains, MIDI instruments, arpeggiators, controllers, or just mess about with sound :&gt;<p>Editor: <a href="https:&#x2F;&#x2F;synchrotron.thatother.dev&#x2F;" rel="nofollow">https:&#x2F;&#x2F;synchrotron.thatother.dev&#x2F;</a> Source: <a href="https:&#x2F;&#x2F;github.com&#x2F;ThatOtherAndrew&#x2F;Synchrotron" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ThatOtherAndrew&#x2F;Synchrotron</a><p>It&#x27;s still experimental (and my first ever shipped project), but I&#x27;d love feedback from people who tinker with audio&#x2F;DSP&#x2F;live coding. Docs are terrible currently, but that&#x27;s my next big goal!

[Other] Show HN: I built a service to run Claude Code in the Cloud

[Other] Turn any website into an API