Useful Tools

A powerlifting calculator compares your lifts with meet results, alongside data studies on attempts, age, weight classes, and who keeps competing.

Bothy presents a downloadable offline library of practical guides, books, maps, and Wikipedia, with on-device search and AI answers.

A free research tool for searching and browsing nonclinical evidence from FDA- and EMA-approved drugs.

An Android travel app that turns visits to places across Japan into GPS-verified collectible stamps, organized into themed packs.

A playable sudoku site and iOS app with twelve puzzle modes, technique-based hints, daily challenges, and printable materials.

A free collection of machining calculators and references for lathe and mill work, with inch and metric options.

A free browser simulator for practicing the crane-game challenge of catching a hanging ring on a hook and lifting its board.

A free browser-based editor for changing text in a PDF without uploading the file or creating an account.

A Galway city guide app bringing together local events, places, trails, maps, news, and practical city information.

A tool for Bauverwaltungen and planning offices that recalculates figures in building applications and checks whether details match across documents.

An interactive archive turns championship finishing positions into connected driver histories, with search, season navigation, and team filtering.

A searchable ranking of usability problems people raise in Hacker News comments, with counts, comment links, and product-specific lists.

A Korean-language focus app turns a work session into a simulated flight departing from Incheon.

A free browser tool for adding movable text to animated drawings and saving a chosen frame as a PNG.

A free desktop app that turns raw astrophotography frames from supported telescopes and colour cameras into a processed image.

A free, bilingual screening service for land documents and purchase risks in Uttarakhand.

A free, open-source desktop assistant that answers questions from England’s building-regulation documents and links answers to their source paragraphs.

An airshow operations platform combining cart and shuttle dispatch, live airfield tracking, staff tools, and a branded public app.

A free in-browser converter turns AutoSketch .skf drawings into DXF files for AutoCAD and other CAD programs.

The Position Project organizes free BJJ lessons, techniques, and instructor videos around the positions in a jiu-jitsu match.

Astrovents pairs an astronomy-event calendar with tools for checking what’s visible from a chosen place and planning an observation.

Aune compares sustainability disclosures from CAC 40 companies across ESRS indicators, linking figures to their source reports.

A Chrome DevTools panel for capturing and diagnosing SAML, OIDC, OAuth 2.0, and WS-Federation sign-ins.

An independent tracker of 114 crowdfunded video games, with status, estimates, and public-source updates.

An open-source Windows assistant that lives in a small island at the top of the screen, handling questions, timers, notifications, and more.

A U.S. building-permit fee finder and calculator that compares local fees for a specified project.

A macOS app that adds falling snow, twinkling lights and seasonal characters around the desktop.

Crow is a free desktop app that turns documents on your computer into linked Markdown notes you can question, with answers that cite their sources.

Dominograph lets users model an outage at a mine, plant, port, or chokepoint and trace the resulting shortfall through connected assets and commodities.

A puppy-training app pairs a countdown to the next toilet trip with one-tap logs, a dim 3am mode, and brief daily lessons.

A browser-based flag designer with layouts, colours, emblems, text, adjustable proportions, and SVG, PNG, or Hearts of Iron IV exports.

A free, English-and-Spanish pest reference for Utah restaurant managers, combining inspection guidance, practical checklists, and public inspection data.

An open-data interface for browsing GALFA-HI neutral-hydrogen survey maps, selecting data cubes, and building downloadable cutouts.

JetCheck lets travelers check a private charter aircraft’s records, operator, runway needs, and route weather before flying.

A Korean-language hub for jewelry-industry notices, education, jobs, events, reference material, community discussion, and practical calculators.

A Japanese-language browser tool lets event staff run a stage timer and send cue prompts to a speaker-facing screen.

A Windows chemistry lab for looking up compounds, calculating reactions under changed conditions, and exploring how simple molecules might lead toward life.

An Android-first map for remembering where friends met abroad are now, with manually added city pins and availability states.

A searchable, free tracker collecting ME/CFS and Long COVID studies, running or planned trials, and related events, with evidence-check labels.

Milkweed lets readers browse games, movies, TV, music, audiobooks and other items available to borrow at public libraries across southeast Wisconsin.

A pattern maker turns images, text, or drawings into craft charts, with row counts, yarn estimates, 3D previews, and printable PDFs.

An online reference for parts, service procedures, diagnostic codes, recalls, and owner-recorded substitutions for 2011–2016 MV-1 vans.

A free fantasy map generator that creates a world, lets you edit its terrain and labels, and exports maps as PNGs.

A self-hosted audiobook manager that searches catalogs and indexers, routes downloads, organizes files, and includes a player.

A free directory for finding non-emergency police and dispatch numbers across the US and Canada.

A browser-based tool for extracting, cropping, tracking, and turning video frames into GIFs, pitched especially at UFO and orb footage.

A $33, 32-page chicken-health guide with a symptom finder, phone edition, and printable flock logs.

An in-development music-making instrument for the TrimUI Brick, with clips, sampling, effects, and live controls built for the handheld.

A Brazil-focused guide to the 2026 FIP Padel World Cup, bringing together match results, schedules, group standings, qualification scenarios, and viewing links.

PartsDue is appliance-repair shop software for WordPress, covering bookings, parts, return visits, invoices, warranty claims, and more.

A library of native PC game recompilations paired with a browser-based checker for players supplying their own game data.

A browser-based receiver that connects to a compatible RTL-SDR dongle for tuning, spectrum viewing, scanning, and audio.

A free browser experience for exploring astronomical places, planning routes through space, or steering your own flight.

A personal portfolio of six small tools and projects, including a clinic-side record keeper, a first-grader’s homework checklist, a recitation aid, and a traditional Chinese clock.

TavLucky offers free online Greek backgammon in three variants, with friend matches, matchmaking, and opponents ranging from beginner-friendly to locked behind a challenge.

A motorcycle-focused finder for food stops, rider reviews, and route planning.

A Thai-language web app for teachers that scans multiple-choice answer sheets with a phone and exports class scores to Excel.

A searchable data project covering Shark Tank Egypt pitches, deals, valuations, investor decisions, and the Arabic words behind the numbers.

A bilingual collection of history and archaeology map portals covering subjects from Nordic runes and Viking sites to rock art and medieval churches.

JetHum estimates your location from aircraft sounds, using a search area you choose instead of GPS.

A browser-based set of statistical quality tools turns production data into analyses and reports, with an interface in Arabic and English.

A free in-browser tool that resizes and checks photos for Nusuk Hajj and related Saudi visa formats.

OpenRoll is a free, open-source desktop video editor for macOS, Windows, and Linux, with editing, captions, and exports presented as local workflows.

Sayinsit is a point-of-sale system for retail and wholesale shops in Myanmar, covering sales, stock, customer credit, cash, and multiple branches.

A desktop video editor where coding agents can make cuts and captions, then users can review and fine-tune the edit on a timeline.

An NFC app for checking balances and turning retained toll and parking transactions from Indonesian e-money cards into PDF or CSV reports.

A flashlight comparison tool for viewing up to four models or reference objects side by side at true scale.

A free directory of Atlanta photo and film studios that turns posted rates into comparable four-hour shoot costs.

AREZ is Windows software for U.S. structural engineers that checks wood-frame building models and generates structural drawings from them.

Aura is an Android player for a YouTube Music library, with offline downloads, synced lyrics, and album art redrawn in dot-based styles.

A free generator for rolling coordinated interface colors, fonts, spacing, buttons, and other design choices, then exporting them as code or tokens.

An early-stage tool for making campaign-specific app-store links, badges, Markdown and QR codes, with paid reporting based on Apple’s campaign data.

CarryOn presents an iPhone and iPad app for remotely using a Mac, including its apps and AI-agent sessions.

A Korean-language guide to seasonal daebangeo restaurants, with listed prices, practical filters, market-price tools and a shareable group-time poll.

A waste-traceability platform for recording loads from pickup through recycling, with vehicle tracking, weighbridge comparisons, verification, and municipal oversight.

A browser-based tool for loading, adjusting, and comparing Fujifilm film-simulation recipes on photos before you shoot.

An embedded UK261/EU261 tool estimates possible flight compensation, prepares claim letters and helps track deadlines.

An open-source macOS dictation app that runs locally, cleans up speech, and learns names and terms from your corrections.

A parent-oriented app for following Orcas Island boys soccer, with season results, schedules, tournament standings, and explanations of the route from league play to State.

Upload a WhatsApp chat export to generate up to 24 awards based on the group’s messaging patterns.

GT Effect tracks selected games’ player counts and public attention around Rockstar’s GTA VI videos.

Hound says it traces stolen USDT on Ethereum and Tron from transaction hashes to wallets that may be candidates for a freeze request.

A set of interactive tools explains and simulates X’s For You feed scoring using weights from the open-source x-algorithm repository.

Inboxglass lets you view MSG, EML, winmail.dat and other email files, extract attachments, and convert messages into formats including PDF, text and HTML.

A showcase for layered audiovisual explainers that can be explored at different depths, speeds, and languages.

This configurator lets people design a personal name sculpture, preview it, and download 3D-print files; customers can also ask about pickup in Laval, Québec.

mhenu presents an ordering and point-of-sale platform for food businesses in the Philippines, with online menus, counter orders, receipts, and rider workflows.

Four mobile tools for paranormal investigation: a spirit box, word-based ITC meter, SLS camera, and audio workbench.

なぞり is an iPhone app for saving selected passages from physical books by tracing them on screen.

A searchable guide to independent places across the UK, pairing a large map with daily curated lists and regional browsing.

A browser-based video quality checker for catching frame, audio, and delivery problems in exported MP4 or MOV files.

A school-card payment service that lets parents top up with MTN or Airtel Money and see students’ tuck-shop purchases.

A free, open-source point-of-sale and shop-management app for repair businesses, covering tickets, sales, inventory, invoices, and reports.

A searchable comparison of ostomy pouches, skin barriers and accessories, with product specifications, some prices, and Medicare guidance.

This open-source tool reviews US written-discovery responses, flags possible gaps, and drafts a meet-and-confer letter for a lawyer to review.

A free seating-chart tool that turns guest lists and plain-language rules into layouts for weddings, events, and classrooms.

A local-first snippet manager that turns reusable commands into fill-in templates you can search and copy from any app.

A browser-based 3D planner for reach-in and walk-in closets that produces dimensioned drawings, cut lists, and shopping lists.

A browser extension for Safari, Chrome, and Edge that searches, groups, sorts, deduplicates, and restores tabs across windows.

A free Chrome extension that compares a shopper’s product-page price with prices fetched in three clean-session scenarios.

A Korean-language tool for comparing apartment complexes across the Seoul metropolitan area by transit, schools, parking, parks, and nearby shopping.

27001 Cost compares up to three certification quotes, checking audit days against headcount and laying out fees and estimated three-year costs.

A desktop tennis-video tool that cuts rallies, visualizes ball paths and player movement, and generates practice suggestions.

Aviation safety prototype that transcribes air traffic control instructions, displays them in a pilot’s language, and suggests a standard English readback.

A bilingual phone-ordering service for takeaways, presented as answering customer calls, handling order changes, and printing tickets to an existing order printer.

An Arabic-language Gregorian and Hijri calendar that pairs country-specific dates with prayer times and a daily page.

Altfont presents a tool for adjusting a replacement font’s metrics so text can change typefaces while keeping its layout closer to the original.

A free collection of electrician-focused calculators and NEC references, covering wire sizing, conduit, motors, box fill, transformers, and conduit bends.

Arreo presents a livestock-records app for tracking animals, weights, vaccinations, breeding, treatments, and farm costs—including work done without a signal.

A searchable Atlanta-area directory compares kids’ camps by age, category, price, and registration deadline, with email alerts for sign-ups.

An interactive simulation shows how GA4 attribution settings and different scenarios can change the story a dashboard tells about sales.

Audionix is an Android music player that turns local audio folders into a cassette-deck interface, with mixtapes, internet radio and a 10-band EQ.

A detailed consumer guide to checking interstate movers, reading estimates, understanding cubic-foot charges, and navigating moving-day disputes.

A free browser-based tool that turns Azuki TCG decklists into printable proxy-card PDFs.

Choose appliances to compare which of 77 power stations can run them, for how long, and at what cost per usable kWh.

BankStatement To Sheets presents a tool for converting bank and credit-card statement PDFs into Excel, CSV, or Google Sheets.

A free, noncommercial companion app that shows a LightBurn laser’s status on a desktop display, a physical light, and a phone.

Belayr describes a check-in timer for walks, dates, solo outings, and house showings, with an alert flow for chosen contacts if a check-in is missed.

A filterable directory of scenic and heritage train rides across the United States, with regional and seasonal collections.

A free, no-sign-up generator turns a word list, numbers, pictures, or blank grids into printable bingo cards.

A free library of 82 LUMIX Real Time LUTs, with browser tools to make, copy, and fix LUTs, plus a collage tool.

A Korean-language packing calculator that recommends carton sizes, shows product layouts in 3D, and compares parcel-shipping costs.

A browser-based calculator estimates regular, 1.5× overtime, and double-time pay from hours and pay details, with options for Canadian provinces and territories.

A browser tool for opening XFA PDFs that show blank pages or “Please wait…” in common viewers, then saving a standard PDF.

An independent guide and set of tools for EU importers checking CBAM coverage, estimating certificate costs, and looking up emissions data.

A browser-based astrology calculator for natal charts, transits, and relationship charts, with calculation details and accuracy data presented alongside the readings.

An interactive chemistry viewer for exploring molecular structures and zooming into atomic orbitals, electrons, and nuclei.

A public-data search guide for finding Japanese clinics by prefecture, opening time, and medical specialty, with a stated option to compare up to five clinics’ hours.

Critical Facility Jobs aggregates data-center electrician, HVAC, controls, commissioning and facilities roles, showing pay when employers provide it.

A browser-based generator makes editable cross-stitch patterns from photos, with PDF, PNG, and SVG downloads.

A downloadable classroom tool for teachers that overlays student selection, grouping, reminders, and timers on a presentation.

Cuelora offers theater tools for live captions and audio, casting and hiring rounds, and—still in development—schedules and nightly reports.

A daily, news-based poster brief gives designers copy, colour, type, image and grid guidance, with a workflow for moving the materials into Figma.

A browser-based tool that validates broker portfolio exports and generates a Spanish Modelo 720 filing file.

A free collection of browser tests for screens, mice, keyboards, controllers, speakers, and headphones.

A browser-based planning tool for mountain-bike trails and bike parks, with terrain, ride behavior, dirt, and drainage in the same workflow.

Flare is an event-hosting tool that matches guests for introductions using colored, pulsing lights on their phones.

A browser-based floor-plan maker for entering room measurements, arranging furniture, and exporting plans.

A community platform for people planning custom electric-vehicle conversions, with planning resources and interactive 3D tools.

A free browser-based toolkit for viewing and converting embroidery designs, checking hoop fit, and estimating job prices.

A catalog of older Windows and Mac app versions, with publisher download links, SHA-256 checksums, release notes, and minimum OS details.

A browser-based tool that helps people prepare editable letters, deadline reminders, and checklists for medical-bill disputes and insurance appeals.

A shared family book catalog for recording titles, editions, recommendations, and where physical copies are kept.

A multilingual tool for entering surviving relatives and estate details, viewing inheritance shares, and preparing a written Islamic will.

A Windows utility that opens files from discontinued programs and converts them to formats such as MP4, Word, Excel, and PDF.

A tender assistant for IT firms that drafts answers from company documents in Russian, Kazakh, or English, with source citations and flags for gaps.

A guided troubleshooting tool helps people diagnose TV and soundbar audio problems by checking symptoms, models, and connections.

A beta practice tool for CELPIP Writing and Speaking that returns an AI-estimated CLB range and targeted feedback.

Foldbook is a mobile reader for comics, manga, and ebooks stored on your devices, NAS, cloud drive, or OPDS catalog.

A browser-based set of image tools for applying effects, resizing, compressing, and converting images individually or by folder.

A public dashboard for tracking NWS model forecasts in New York, Chicago, and Los Angeles and comparing them with reported weather results.

A Korean-language fan resource for World of Warcraft: Forever, with character and server lookup, a talent calculator, and extensive game-data indexes.

A browser-based converter that turns nested JSON into CSV, with controls for arrays, delimiters, and spreadsheet-specific formatting.

A browser-based tool that resizes photos and signatures to the file-size and dimensions specified by an online form.

A free directory of U.S. electric utilities, with profiles and comparisons built from 2025 EIA Form 861 data.

ClarityCam describes a phone app for small trade crews to document a site before work begins, get the client’s signature, and send a record if damage is disputed.

A Windows swim-meet manager for Colorado Time Systems consoles, with seeding, results, reports, and club records.

An open-source desktop app presented as a way to move logins, extensions, bookmarks, and history between devices or browsers.

A browser-based music notation editor for keyboard or MIDI entry, playback, parts, and PDF export, with imports for Finale files and MusicXML.

A party-game site where the 12 highest bidders pay the host, then pick a real wrapped present in person—possibly a gift, possibly a poop.

A filterable guide to gold-farming schemes for WoW Forever, with free entries and a $17 one-time paid tier.

A browser-based editor for writing, previewing, and converting Mermaid, PlantUML, Graphviz, SysML v2, and draw.io diagrams.

Grillo turns cross-stitch chart PDFs, scans, and photos into printable charts with DMC thread colors and distinct symbols.

Hanging Notes is a Mac utility that lets to-dos, snippets, and reminders drop from the top edge of the screen when you point there.

A free set of browser-based tools for resizing exam application images, finding exam-specific file rules, and preparing documents.

A searchable tracker of restaurant openings and closings, using public-record signals across U.S. metros.

Help Calc offers free calculators for practical tasks across hobbies, crafts, music, pets, farming, lab work and more.

A free tide lookup for US beaches, towns, and ZIP codes, with high and low times, water temperatures, and related daily conditions.

Hechito is a bilingual app for contractors that turns spoken notes and jobsite photos into job records, quotes, invoices, and payment follow-ups.

A game guide with a demo-return checker, a planner for 64 achievements, and advice on ship-building rules.

A Finnish-language NHL dashboard for scores, schedules, standings, player stats, forecasts, and Finnish-player tracking.

Hushchart lets barbershop groups check whether another group has sealed a song for a contest, and seal their own choice.

A northern Idaho I-90 travel resource combining pass conditions, webcams, weather, and chain-law guidance for Fourth of July and Lookout Pass.

An Atlanta analytics studio offering survey, clinical-study, and small-business work, alongside a sample-size calculator, chart game, and workflow tools.

A procurement discovery tool for Portuguese businesses: enter a company NIF or name to find nearby public buyers, past suppliers, and contract timing.

A community project collects calculators, match tools, team-building utilities, and a rules quiz for Warhammer Kill Team.

A bilingual observatory models how national contribution and tax rules turn employer labor costs into take-home pay.

A searchable tracker compares water levels at 340 U.S. lakes and reservoirs with full pool, seasonal norms, and last year.

A forthcoming phone app is designed to track cracks and moisture by comparing repeat photos and preparing dated reports for insurers or landlords.

A Windows app for lawyers that monitors UYAP case files, alerts on selected documents, and calculates legal deadlines; the site also offers free deadline and sentence-execution calculators.

This open-source tool lets you use a tablet, phone, or other screen as a touch panel for controlling shortcuts on your PC.

A rotation calendar for offshore, rig, and FIFO workers, with a separate family-calendar option for people at home.

A browser-based lipidomics workspace for PCA, heatmaps, differential analysis, and formatting datasets for MetaboAnalyst.

A browser-based builder helps small shops create machine-specific lockout/tagout procedures, placards, tags, and related safety forms.

A browser-based lyric-video maker lets musicians time lyrics themselves or commission word-by-word alignment to a song.

A temporary-email service presents inboxes with lifespans from one hour to 30 days or “forever,” plus optional password protection and recovery codes.

A €49, boat-specific report compares annual marina costs across Croatia and Slovenia, alongside a wider Mediterranean comparison.

A browser-based tool for measuring tissue patches, learning image features, exploring clusters, and exporting results from multiplex matrix images.

A visual search engine for finding memes, infographics, charts, screenshots, and other images by description, text inside the image, or visual similarity.

A recipe-costing and menu-analysis tool for restaurants, hotels, and caterers, with modules for ingredient costs, waste, yields, and buffets.

A guide and rating-plate checker for Indian kitchen appliances, covering US voltage, frequency, induction compatibility, and regional cookware.

A live coaching service for riders pairs iPhone video with a remote coach who can watch and speak during a lesson.

A searchable catalog of mountain peaks organized by continent, country, region, range, climb type, and curated lists.

NavMap brings Google Maps turn directions to supported Garmin watches through a companion Android app.

A local earthquake dashboard collecting seismic records, maps, alerts, and analysis for Granada and its metropolitan area.

A browser-based sound generator for sleep and focus, with noise, rain, ocean, and shush options.

A directory for small and mid-size music venues, with booking contacts, room details, show histories, maps, and road-route search.

An open-source, Rust-based OneNote alternative that stores notes as plain HTML or Markdown files, with an in-browser demo.

A browser-based tool for building Nutrition Facts panels in 13 FDA-style formats and exporting them as print-ready PDFs or PNGs.

A forthcoming Mac menu-bar app for sorting, renaming, and tagging files in Downloads, Desktop, or folders the user allows it to access.

Only Tuner is a free browser-based instrument tuner, with tunings and displays for a wide range of instruments.

Ozzie is practice software for equine osteopaths and physiotherapists in Switzerland, covering treatment notes, client reports, appointments, invoicing, and mileage.