#web-app

Calculator.Free is a new online calculator application showcased on Hacker News. The site offers free calculator functionality to users directly through a web browser.

A developer built hnwork.app, a structured UI on top of Hacker News' "Who is hiring" posts, offering text search, filters, analytics, and an API. Job posters can create verified accounts with structured postings (requiring salary range), and job seekers can browse without signing up or create accounts for comments and API access.

panSpeedCalc is a web-based tool that calculates panning speed for timelapse photography, helping photographers determine optimal camera movement parameters for smooth panning shots.

A developer created a web app to make it easier to browse San Francisco Public Library events across branches on a phone, after finding the official calendar slow to use. The app lets users select preferred branches, swipe to archive events, and tap for details with a Google Calendar link.

Sonoday Radio is a free, browser-based tool that recreates the radio experience for podcasts, allowing users to discover and listen to shows without accounts or sign-ins. It offers over 100 curated channels and optional free accounts for saving episodes and preferences.

An engineer built SpotTheCue.com, a free tool to help with social cue awareness and self-confidence. It offers learning paths on body language and digital communication, plus social stories for real-life situations like going to the airport. All data stays on the user's device unless they sign up.

Squeezes is a free online tool that allows users to compress multiple images at once in bulk, directly in the browser without uploading files to a server.

The creator of filler.live struggled to identify competitors using existing AI tools, so they built opencorp.live. The site lets users input a URL to search the web for real competitors and also shows relevant Hacker News threads.

The author recounts building a vocabulary word game called "Vocabulary," sharing the development process, design choices, and technical implementation behind the project.

A WebAssembly port of LibreCAD, named LibreCAD in the Browser, allows the open-source 2D CAD application to run directly in a web browser without server-side processing, providing full CAD functionality on the client side.

A developer built PhotoSignal, a photography weather alert system that lets users set location-based triggers for conditions like cloud cover, fog, frost, moon position, and rain clearing. Unlike other apps, it uses binary triggers instead of "magic scores." The freemium web app (built with C#, EF Core, Postgres) is currently offering HN users a 14-day free trial with invite code HNINVITE.

Markmaster is a Markdown learning tool designed for non-coders, providing an interactive way to learn the markup language. The tool aims to make Markdown accessible to users without programming backgrounds through a practical, hands-on approach.

The article describes a browser-based video editor called Aethercut that allows users to verify that their video footage is never uploaded to any server, processing everything locally on the user's device for privacy and security.

A classic Minesweeper game has been built and shared on Show HN. The project recreates the traditional puzzle experience in a web format, available at guokai.dev.

A developer created a free, no-login invoice generator for freelancers, allowing users to create and download invoices without any subscription.

The developer created a free web app that functions as an I Ching oracle, providing users with digital access to the ancient Chinese divination text.

A Show HN post introduces a hub of interactive calculators on nasengetu.com/calculators, described as offering by far the most unique calculators available.

The article describes how to self-host Obsidian as a web application, allowing users to access their notes from any device without relying on Obsidian Sync or the official paid service. It provides a step-by-step guide to set up a Docker container with Obsidian's web interface, enabling full note-taking functionality through a browser while keeping data on the user's own server.

The page appears to be a personal project described as "AI slop" built for fun, asking for user ratings. No detailed article content is available for summarization.

Y2Pilot lets users create, edit, and share YouTube playlists without needing a YouTube or Google account. The tool provides a simple interface for building playlists and generating shareable links, making playlist curation accessible to anyone.

ConvertBlink is a browser-based tool that allows users to convert rare and less common image formats without uploading files to a server. The conversion process happens locally in the browser, offering privacy and speed for niche format conversions.

A developer created a tool that converts X (Twitter) posts and Threads into platform-specific carousels with themed background images. The carousels are editable and customizable. The tool offers free credits on sign-up.

1000songs.co.uk is a personal project featuring 10 songs per year from 1930 to 2030, currently 927 tracks in. It includes a radio time machine with 30-second iTunes previews, games based on birth year and tune-guessing, and allows users to paste their own songs. The creator is seeking suggestions for 1930s and 1940s gritty jazz and blues.

Mouse.party is a web-based tool that allows users to control multiple computer cursors simultaneously from a single mouse and keyboard, enabling collaborative or multi-pointer interactions on a shared screen.

FileVeil is a browser-based tool that lets users hide any file inside another file—such as a photo, video, or document—so the cover file remains functional while containing AES-256-GCM-encrypted hidden data. Everything runs locally without uploads or servers.

Follow the Thread is a typography-focused web tool that offers a calmer reading experience for Wikipedia articles, emphasizing cleaner text layout and easier navigation through topics.

Xcreener is a newly launched, simplified stock and forex screener designed for traders. It offers filters for price, volume, volatility, and technical indicators to help users find trading opportunities more easily.

A revamped Minesweeper passion project introduces a PvP-style multiplayer mode with rooms for up to three players, a scoring system of +1/-3, and three speed-based difficulty modes designed for balanced and fast-paced gameplay.

A website called Only One Input provides a single global text field where any visitor can type, and everyone else sees the input in real time.

Better Grammar is a free web app designed for adults to practice English grammar through interactive exercises. It offers structured lessons covering topics like word order, verb tenses, and prepositions, aiming to improve writing and speaking clarity without the feel of children's educational content.