🛠️ All DevTools

[Other] Show HN: I built a tool to sync localStorage between devices At my day job, we have a daily async stand-up. We have to message a slack bot how many hours we have worked on a given task that day and overall.<p>The format is:<p>&gt; Task: &quot;Task Name&quot; | Worked: 5h Total: 16h &gt; Description: Finished implementation of feature.<p>I don&#x27;t complain. Most fully remote jobs come with a version of this, but doing it manually got tedious. So, I needed a simple app that would track this.<p>I am not usually a fan of &quot;vibe coded&quot; apps, but this was an ideal candidate for it, since it&#x27;s not production code. Most LLMs solve the problem by creating a single HTML file with forms that save data to localStorage. This was perfect for me - no hosting, no DB, no backend. Just 15 mins of prompting.<p>One day I was outside, just with my phone, and of course I couldn&#x27;t use the app. I thought &quot;how hard can it be to synchronize localStorage data across devices?&quot;. Turns out, it&#x27;s not that hard, if you are ready to build a whole platform around it.<p><a href="https:&#x2F;&#x2F;htmlsync.io" rel="nofollow">https:&#x2F;&#x2F;htmlsync.io</a> does just that. You upload your HTML app that works with localStorage and get a subdomain for it. The tool automatically synchronizes your changes across devices. You can create private and public apps, can decide which keys to synchronize by using the &quot;no_sync_&quot; prefix. The &quot;public-hidden&quot; CSS class can be used to hide UI elements in public view. You also get a subdomain for your profile where all your apps are listed for easy access.<p>I hope you find this as useful as I did.<p>I&#x27;d also appreciate your feedback if you end up using it.

[Other] Show HN: Ruby on Rails tutorial running in the browser Meet the Ruby on Rails Getting Started tutorial that runs fully in the browser: a web server, a console, a database—everything you need to explore the framework without dealing with local installation.<p>Source code: <a href="https:&#x2F;&#x2F;github.com&#x2F;evilmartians&#x2F;rails-tutorial">https:&#x2F;&#x2F;github.com&#x2F;evilmartians&#x2F;rails-tutorial</a><p>This is the first step towards an in-browser development environment for Rails that could be used with AI app generators like Bolt among other things.

[Other] Show HN: Encode Base64

[Database] Show HN: OrioleDB Beta12 Features and Benchmarks Hey HN, I&#x27;m the creator of OrioleDB, an extension for PostgreSQL that serves as a drop-in replacement for the default Heap storage engine. It is designed to address scalability bottlenecks in PostgreSQL&#x27;s buffer manager and reduce the WAL, enabling better utilization of modern multi-core CPUs and high‑performance storage systems.<p>We are getting closer to GA. This release includes:<p>- An index bridge to support all indexes that Heap supports<p>- Support for rewinding recent changes in the database.<p>- Tablespaces support<p>- Fillfactor support<p>- An orioledb_tree_stat() function for space utilization statistics<p>- Support for tables with more than 32 columns.<p>We also show several performance improvements using the TPC-C benchmarks. Overall, OrioleDB is much faster than Heap, also outperforming other Postgres providers.<p>We would love more people testing OrioleDB. The fastest way to do that is to use the docker image provided:<p><pre><code> docker run -d --name orioledb -p 5432:5432 orioledb&#x2F;orioledb </code></pre> Read the full release here:<p><a href="https:&#x2F;&#x2F;www.orioledb.com&#x2F;blog&#x2F;orioledb-beta12-benchmarks" rel="nofollow">https:&#x2F;&#x2F;www.orioledb.com&#x2F;blog&#x2F;orioledb-beta12-benchmarks</a>

[Monitoring/Observability] Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. Don't be shy, join here:https://discord.com/invite/NAb6H3UTjK:)

[Other] Show HN: We made our own inference engine for Apple Silicon We wrote our inference engine on Rust, it is faster than llama cpp in all of the use cases. Your feedback is very welcomed. Written from scratch with idea that you can add support of any kernel and platform.

[Other] Show HN: Compare Speech APIs Live (OpenAI, Google, Deepgram, Soniox, etc.)

[Other] Inspect ANSI control codes and escape sequences

[Other] Data bulk import, export, update, and migrate BulkFlow provides a solution to IMPORT, UPDATE, & EXPORT data in bulk from CSV/Excels Files, FTP, Google Sheet, XML,... to eCommerce platforms such as Shopify, WooCommerce,... automatically and quickly.

[Code Quality] Simple vulnerability detector for your github repo Code Police by Vibe Coders: Fast, professional vulnerability scanner for GitHub repositories. Detect SQL injection, XSS, secrets, and more security issues instantly. 10$ -> 5 credits -> Github repo -> Find vulnerabilities

[Other] Real-time intelligence on emerging GenAI vulnerabilities Real World Vulnerability Feed for LLM's Valuable for defensive and and offensive operators alike. Fortify your GenAl deployments with real-time intelligence drawn directly from ODIN's research and pioneering GenAl Bug-Bounty program.

[API/SDK] The open-source framework for real-time AI voice Real-time Voice AI Agents We are open-sourcing the easiest way for developers to build real-time Voice Agents and Virtual Avatars into any app—telephony, web, mobile, robotics, wearables, and beyond.

[Other] AI sidekick-multi-LLM workspace 9xChat is a floating AI workspace that lets you chat with multiple LLMs in one window. Switch, compare, and manage LLMs seamlessly. Save prompts, stay organized, and work offline or incognito. Built for students, devs, and AI power users.

[Other] Crypto Instant Token Launcher Launch your own crypto token on any network — instantly, no code required. Pumpify is a free, fast, no-code token launcher. Fill out a simple form, connect your wallet, and deploy a fully functional ERC-20 token in seconds.

[Other] Best Mail Server: 10+ Domains, API-Driven | Leveragers.xyz Leveragers.xyz offers the ultimate mail server solution with 10+ active domains and powerful API key integration. Designed for speed, security, and scalability, our platform is perfect for businesses and developers seeking reliable, advanced email services

[Other] Automatically complete WooCommerce orders after payment A free plugin that automatically completes WooCommerce orders after payment—perfect for digital or virtual products. No setup, no manual updates. Works with PayPal, Stripe, and more. Just install, activate, and let it handle fulfillment for you.

[Other] Show HN: Timep – a next-gen profiler and flamegraph-generator for bash code timep is a TIME Profiler for bash code that will give you an accurate per-command execution time breakdown of any bash script or function.<p>Unlike other profilers, timep also recovers and hierarchally records metadata on subshell and function nesting, allowing it to recreate the full call-stack tree for the bash code being profiled. If you call timep with the `--flame` flag, it will automatically generate a flamegraph .svg image where each block represents the wall-clock time spent on a particular command (top level) or its parent subshells&#x2F;functions (all the other levels).<p>Using timep is simple - just source the timep.bash file then add timep before whatever you want to profile. You do not need to change in the code being profiled - timep handles everything for you. Example usage:<p><pre><code> . .&#x2F;timep.bash timep someFunc timep -flame someScript &lt;inputFile </code></pre> timep will generate 2 profiles for you: one showing each individual command (with full subshell&#x2F;function nesting chains), and one that combines repeated loops commands into a count + total runtime line with minimal &quot;extra&quot; metadata.<p>See the github README for more info on the available flags and output profile specifics.<p>timep works by cramming all the timing instrumentation logic into a DEBUG trap that roughly does the following:<p>1. record end timestamp for previous command 2. compare current state to state saved in variables last DEBUG trap to determine what sort of command is happening. e.g., if BASH_SUBSHELL increased then we know we just entered a subshell or background fork. 3. once we know what type of command is happening, generate a log line for the previous command (now that we have its end time 4. save current state in various variables (for use next debug trap) 5. record start time for the next command<p>then after the profiled code is done running, timep post-processes the logs to produce the final profile

[Other] Show HN: CallFS – S3-style object store in one Go binary (MIT) We started CallFS after yet another late-night “why did the uploads vanish?” incident. Our small team had stitched together rsync, a fragile NFS mount, and an S3 bucket—none of it observable, all of it waiting to bite us.<p>So we wrote a single-process file service in Go that: • Speaks the S3 API (so existing tooling works). • Stores hot data on local disks for speed; cold data can sit in any S3-compatible bucket. • Exposes Prometheus metrics and JSON logs by default, because “what happened?” shouldn’t be guesswork. • Ships as a ~25 MB static binary—no external deps, MIT license.<p>Today it’s stable for single-node or side-by-side deployments. Clustering is on the roadmap, replication will follow, but we wanted to share the code early and hear real-world pain points. If storage glue code ever ruined your weekend, we’d love feedback and PRs.

[Other] Benben: An audio player for the terminal, written in Common Lisp

[Other] The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.