Useful Tools

A register and browser-based toolkit for testing whether published percentages have a defensible denominator.

A free collection of 37 full-screen, playable movie-computer scenes for film sets, themed venues, and idle monitors.

A browser-based point-of-sale system for Thai bars and restaurants, covering QR ordering, kitchen and bar tickets, floor plans, stock, payments, and tax invoices.

An offline zero-based budgeting app that prices purchases in hours of take-home work and challenges spending impulses in real time.

An interactive simulator lets you test boarding methods across real aircraft layouts, from back-to-front zones and WILMA to the Steffen method.

A forthcoming iPhone app for observing and reducing alcohol, tobacco, screen, or gambling habits without demanding immediate abstinence.

A browser-based toolkit for making CVs, filling out Nepali documents, writing applications, and tracking money in local formats.

A tool that estimates how replaceable an Etsy item is by comparing its tags, price, and currency with live listings.

A bicycle compatibility and provenance tool that identifies the exact standards and measurements a bike uses, from bottom brackets to headset, axles, seatposts, and tyre clearance.

A free, offline search protocol that tells cat owners what to do, in order, after an indoor cat gets out.

A Texas public-service leave calculator that forecasts annual leave, skeleton-crew holiday credit, planned absences, and fiscal-year carryover.

A behavior-change app that helps you stop one thing by naming the situations where it happens and planning what to do instead.

An iPad app that helps parents practise French pronunciation with a child in ten-minute, offline sessions.

A LINE-based assistant that turns photos of medical appointments, prescriptions, and test results into plain-language summaries shared with a family or care center.

A complete iOS chess app for offline play, with Bluetooth, pass-and-play, computer opponents, clocks, PGN export, and no accounts or servers.

A Portuguese tool that turns a workplace situation into three messages ranked on the RIPS, its 10-level “Régua de Intensidade de Puxa-Saquismo.”

A browser-based pixel typography studio for hacking 3×5 glyphs, animating text, and exporting it in formats including SVG, PNG, GIF, WEBM, and MP4.

A free browser-based tool that turns one pasted class roster into seating charts, balanced groups, student pickers, job rotas, attendance sheets, certificates, name tags, bingo cards, and flashcards.

A native macOS layered raster image editor with nineteen tools, blend modes, pixel-accurate scaling, and a clickable undo history.

A planned offline companion for British Columbia’s 178-kilometre Sunshine Coast Trail, with maps, hut and water information, trip planning, transport details, and trail updates.

Clockwork automatically calls a random drug-testing line, enters your ID, and texts you the result each morning.

A browser-based tool that turns PDF invoices, receipt photos, and workbooks into editable spreadsheets or CSV files.

PupID is a tiny studio behind custom Bluesky handles for pup personas and link-in-bio pages for pups, handlers, furries, and kinksters.

A recovery tool that rebuilds G-code and guides users through resuming failed FDM prints, including prints that shifted or came off the bed.

A daily alert service for aviation-parts teams, matching aircraft models, ATA chapters, keywords, and part numbers against FAA and NTSB safety records.

A French platform for managing the dry lease of ULMs, airplanes, and helicopters, from booking and weather checks to e-signatures, invoicing, and digital flight logs.

A hotkey-opened grid for organizing Windows shortcuts, folders, apps, and tools.

A focused land-survey tool that turns PLSS legal descriptions into GPS coordinates, parcel boundaries, GPX files, and KML exports.

Ein KI-Bildbearbeitungstool für Immobilienfotos, das Räume möbliert, entrümpelt oder umstilt, ohne Fenster, Wände und feste Einbauten zu verändern.

An invite-only Telegram bot that watches flight prices twice a day, builds whole-trip costs, and flags questionable sellers before recommending a booking.

AssetMemo tracks drug assets, clinical trials, companies, mechanisms, readouts, and related news in a searchable research terminal.

An interactive guitar toolkit for exploring chords by key, comparing voicings and tunings, choosing a capo, and practicing progressions.

A bite-sized practice app for reading people, setting boundaries, negotiating, and handling conflict through short scenario-based drills.

A free calculator for the exact time between two times or dates, including overnight spans, daylight-saving changes, and leap years.

A bill-saving assistant that reads bills, renewals, and policies, compares available deals, and helps households find potential savings.

An offline-capable tool for milliners that turns head measurements and crown profiles into 3D-printable STL crown blocks.

A browser-based classroom display that automatically shows the day’s agenda, Do Now, announcements, and period timer according to a school’s bell schedule.

A bowling lane-reaction trainer that uses simulated oil patterns, ball physics, and graded drills to teach bowlers when and how to move.

A browser-based toolkit for converting, compressing, resizing, and inspecting images, PDFs, archives, and file metadata.

A daily benchmark and valuation toolkit for natural, GIA-certified diamonds, covering prices, grades, cuts, geometry, and comparison tools.

An evidence-aware recipe and meal-planning site for people navigating constraints around cooking, chewing, seeing, gripping, standing, or energy.

Charter reads local codes to identify, file, and monitor the permits and other obligations attached to a property.

A free browser-based classroom noise monitor that maps live microphone levels to four relative sound bands and a visual kitten signal.

A free, projector-friendly classroom noise monitor where sound moves a sleepy cat, a paper plane, a star watch, or a growing garden.

A focused calculator and comparison guide for choosing crawl-space dehumidifiers by capacity, temperature, drainage, and installation requirements.

A browser-based subtitle repair tool that corrects fixed offsets, frame-rate drift, and character encoding problems without uploading your files.

A cooking conversion tool for grams, cups, tablespoons, millilitres, butter, and oven temperatures, covering 69 ingredients.

A free browser map editor for Realm Brew hex tiles that checks edge matches, tracks your physical inventory, and keeps room notes across multiple dungeon levels.

A Japanese database for finding pharmacies that sell emergency contraception, searchable by current location, prefecture, municipality, and access conditions.

A community tracker that explains Dota 2 hero-meta shifts by bracket, role, patch, and tournament.

Duto is a macOS notes app for clipping text, pinning working notes, and transcribing speech or system audio into a local SQLite database.

Earthwork estimating software for U.S. excavation contractors, built around their own machines, crews, haul rates, and production assumptions.

A book-editing tool that checks spelling, mechanics, repetition, readability, and writing patterns without rewriting the author’s work.

A free card database, collection tracker, deckbuilder, and camera scanner for the Elestrals trading-card game.

A Spanish-language 2D calculator for drawing and analyzing beams, trusses, and frames by the stiffness method and several step-by-step alternatives.

A forthcoming offline astrology desktop app for Windows, macOS, and Linux that records how each chart was calculated.

A French app for managing horses, combining health records, competition alerts, professional directories, care reminders, schedules, and stable journals.

An offline delivery checklist for Tesla Model 3 and Model Y buyers, available in English, French, German, Spanish, and Italian.

A face-search tool for photographers, schools, and race organizers that lets guests find their own event photos with a selfie.

A free French-language tool for opening UBL, CII, and Factur-X electronic invoices as readable, printable documents.

A local-only nonsense generator for producing editable, harmlessly misleading personality filler.

A French coordination tool for parents, ex-partners, grandparents, nannies, and other caregivers managing children’s schedules, handoffs, bags, notes, messages, and expenses.

A bookkeeping tool for cleaners, landscapers, barbers, and other tradespeople that turns Venmo, Cash App, Zelle, and cash payments into organized business records.

Speaker Cut turns a Final Cut Pro multicam into a speaker-switched edit by reading each camera’s isolated microphone, then returns a finished timeline with transcript, loudness leveling, highlights, and export files.

Trill is a Mac dictation tool that transcribes and rewrites speech on your own hardware, with a four-level dial controlling how heavily it edits what you said.

A free, no-sign-up generator that exports iOS, Android, and store assets from one square icon.

A free Catalan-language guitalele tuner, chord checker, practice game, and song guide that runs offline in the browser.

A live party-game system lets everyone in a venue play from their phones while an automated announcer runs the show.

Choose a US metro and the year you almost bought, then compare the home’s estimated value with the mortgage, rent, and S&P 500 alternative you could have had.

Human Industries is an independent studio making small iPhone apps, including a free, no-account reminder for calling people you care about.

A Polish household energy optimizer that uses quarter-hourly electricity prices to schedule EV charging, water heating, heat pumps, and other flexible loads.

A Thai calorie-checking tool that estimates the calories and macros in a dish, then lets you log the meal locally.

A Philippine bookkeeping app for owners of boundary and rental businesses to track units, riders, daily payments, overdue balances, and documents.

A native macOS wallpaper that turns whatever your Mac is playing into a live oscilloscope behind your desktop icons.

A free, open-source desktop app for converting video and audio and transcribing speech on macOS, Windows, and Linux.

A browser-based viewer that opens MRI, CT, X-ray, ultrasound, and dental scan files from hospital CDs, USB drives, or patient portals.

A white-label digital travel journal for agencies and tour operators, opened by a code and usable without a network connection.

MetricBridge lets users query Apple Health data in plain language on an iPhone, or export 190 metrics as JSON through 14 MCP tools for AI clients.

A browser-based tool that converts STL, OBJ, 3MF, and PLY files into studio-lit 360° videos and product photos.

An interactive tool for designing made-to-order food-grade silicone molds, chocolate bars, trays, and plaques.

A Japanese guide with calculators for unemployment insurance, parental-leave benefits, sickness allowances, medical-cost caps, survivor pensions, and post-retirement health insurance.

A searchable car library and true-cost calculator that compares model years using complaints, recalls, EPA data, fuel, maintenance, and battery risk.

A Chrome extension that lets one user mute a single Google Meet speaker locally, without changing what anyone else hears.

A local discount finder that matches age-based deals to the people in your group.

A Windows system for running Taekwondo WT competitions, from athlete registration and weigh-in to brackets, judging, live scoring, public displays, and recorded results.

A browser-based set of three free puzzles—ball sort, jigsaw, and hangman—refreshed for everyone at midnight UTC.

A Chrome extension that detects passwords, API keys, card numbers, and personal details, then masks them before you screen-share, screenshot, or record.

A free, open-source macOS utility that monitors Claude Code and Codex usage quotas from the Mac notch.

Nurreo is an email and calendar provider on your own domain, with CLI, MCP, and skill-file access for the agent you already use.

A browser-based studio for turning images into editable fuse-bead pixel-art patterns.

A private cataloging tool for artists, estates, galleries, and archives, with structured fields for works, materials, dimensions, dates, inventory numbers, and photographs.

OpenPianos maps public pianos around the world, showing recently played locations and inviting people to verify, update, and annotate them.

A bilingual browser tool for analyzing oven-recorder data, calculating channel-by-channel Cpk values, and comparing saved temperature runs.

A browser-based overtime calculator covering every US state and Canadian province, with daily, weekly, double-time, holiday, and shift-differential rules.

A Proposition 65 warning generator and catalogue auditor for products sold with California labels.

A handwritten notebook for iPad and Android that links pages together, searches handwriting on-device, and keeps notes available offline in user-owned files.

A UK travel tool finds the best railway station for getting dropped off partway through someone else’s drive.

A regional pool-chemistry guide with calculators for chlorine, cyanuric acid, shock, tablet use, and water replacement.

A verification and revenue-recovery tool for non-emergency medical transport operators, recording trips offline and comparing broker payments with contract terms.

A searchable reference explaining washing, bleaching, drying, ironing, and dry-cleaning symbols found on clothing labels.

A browser-based tool for dental billing teams that turns text-based PDF EOBs into checkable claim-line tables.

A local-first workout planner and tracker that logs lifts as personal bests, strength ratings, XP, and 116 achievements.

A free, private image and signature resizer built around the exact KB, pixel, and centimetre requirements of Indian government forms and exams.

SanTakbo helps runners find Philippine races by distance, place, date, terrain, registration status, and budget.

A mobile inspection-report tool that turns photographed defects and spoken notes into a room-by-room, trade-grouped PDF scope of works.

ScanLoupe converts 3Shape TRIOS .dcm scans into STL or PLY files directly in the browser.

A Mac screen recorder that automatically adds zooms, smooths the cursor, edits captions, and exports polished video without sending recordings off-device.

A service that watches across your streaming subscriptions and texts you when something worth watching arrives.

A privacy-conscious browser tool that measures whether shoppers are shown different prices for the same product.

A free Windows tool that audits a folder of Word, PDF, Excel, and PowerPoint files before they are used to build an enterprise knowledge base.

SCL is an offline, AI-assisted tool that organizes, searches, paraphrases, and cross-links the PDFs already stored on your machine.

An early-access Android app that proposes using phones in a school or building to detect possible gunfire and alert a paired guardian.

A Chrome side panel that gathers tabs, downloads, pins, notes, clipboard history, translation, and Spotify in one searchable hub.

Sieve is an on-device Chrome extension that judges pages against a goal you describe and soft-blocks the ones that do not serve it.

A free browser-based toolkit for merging, converting, editing, securing, and compressing PDFs and images without uploading files.

An Android medication reminder for elderly parents, with large text, two-button senior mode, full-screen alarms, and caregiver dose sharing.

A Japanese household-disaster calculator that estimates shortages of water, food, emergency toilets, and cassette-gas canisters.

A browser-based toolkit for merging, splitting, compressing, converting, signing, and otherwise working with PDFs, images, video, and files.

An operations platform for dance studios that organizes routines, competition schedules, call times, costumes, packing lists, and family acknowledgments.

KHONA is a desktop voice tool that turns spoken Darija, French, and technical English into professional French inserted directly into email, WhatsApp Web, Word, or a CRM.

SyncPilot checks Gmail, classifies each new message into one of seven actions, and sends worthwhile replies to Signal for approval.

A browser-based tool that analyzes one Telegram conversation for rhythms, silences, activity patterns, and recurring private language.

A map-based tool that converts a drawn land boundary into a watertight, 3D-printable terrain model with contours, markers, and optional full-color 3MF export.

A housing-regret calculator that estimates what an almost-purchased home might be worth today, alongside mortgage, rent, and S&P 500 alternatives.

Tigadi is a free online two-player board game based on the Indian nine men’s morris family, with computer play, hot-seat mode, and multiplayer rooms.

A browser-based tip tracker for servers and bartenders that records cash tips, card tips, tip-outs, real hourly pay, and shift totals.

Tomeling reconnaît les livres sur une photo et les replace dans leur étagère exacte, avec une vision plus vaste d’un réseau pour lecteurs, auteurs, clubs et libraires.

Chilean workshop software that handles vehicle intake, quotes, customer approvals, work orders, parts, and payments from a phone.

A searchable calendar of Catalonia trail races, with filters for drive time from Barcelona, distance, elevation, month, province, and kids’ events.

TreadPilot is an open-source iPhone app that controls compatible FitShow treadmills over Bluetooth, runs interval programs, records live workout data, and syncs sessions to Apple Health.

A free Android internet radio player with more than 50,000 stations, no account, no ads, and no tracking.

A multilingual Android app that calculates birth charts and shows the visible sky using astronomy data, AR, and location-aware time zones.

Turnout Board lets firefighters tap “I'm Available” or “I'm Away” from a home-screen link while officers see a live, sorted count of who can respond.

A focused availability-watching tool for curated Paris apartments, with filters for dates, stay length, guests, price, rooms, refundability, ratings, and neighbourhood.

A document self-checking tool for visa applications that compares paperwork with published requirements and with itself.

A free collection of fullscreen browser scenes, from photo slideshows and a 3D aquarium to auroras, ants, clocks, and geometric animations.

A nationwide discovery app for finding restaurants offering free kids meals, sorted by distance and filtered by day, location, and deal details.

A working whisky reference joining distilleries, bottlings, tasting notes, distillery visits, bottle identification, and auction records.

A Windows application that watches an email address and automatically prints incoming attachments.

A searchable database that checks whether XR glasses work with phones, handhelds, and consoles, including adapters, feature limits, and evidence.

A food-discovery app for finding Jamaican, Trinidadian, Guyanese, Haitian, and multi-Caribbean restaurants across New York and nearby counties.

MacDisplay uses Thunderbolt, Ethernet, or Wi-Fi to turn another Mac into an extended display, without extra hardware, an account, or cloud services.

A browser-based screenshot beautifier that adds aurora backgrounds, window frames, hand-drawn annotations, privacy masking, and animated GIF export.

A proposed temperature scale and converter that doubles Celsius readings, turning each 0.5°C step into one whole Galliera degree.

A free, no-signup browser tool for designing 25mm, 32mm, and 58mm pin buttons with photos, text, stickers, masks, and print-ready exports.

A live inventory tool tracking allocated bourbon across 663 stores in Ohio, Indiana, Kentucky, Illinois, and Michigan.

A Spanish-language deckbuilding and campaign-management tool for Arkham Horror: The Card Game.

An interactive first-trip checklist for Bali covering visas, arrival declarations, the tourist levy, airport logistics, safety, and travel documents.

A standards-based calculator for straight bevel gear pairs, with dimension tables, a 3D preview, and downloadable STEP-file generation.

An offline iPhone and iPad reading app for Scripture, historic confessions, catechisms, Calvin, John Owen, and the Ante-Nicene Fathers.

A manuscript-analysis tool that checks spelling, mechanics, repetition, readability, and sentence patterns across an entire book.

A source-linked planning tool that compares California and New York LCSW continuing-education requirements and builds a state-by-state course plan.

A free, no-signup tool that decodes QR codes and checks their destination links for known phishing and malware threats before you open them.

CleanExport turns scheduled HubSpot CRM exports into structured Excel files, preserving line breaks, dates, owner names, column order, and record IDs.

A Nigerian health-record tool for logging symptoms, medicines, blood pressure, reminders, and clinic handovers across a household.

A workspace for engineering offices that checks RFIs, letters, submittals, claims, and other outgoing documents against contracts, specifications, drawings, and correspondence.

A QR-ordering system for golf courses, driving ranges, and clubhouses that routes food and drink orders to the right cart, hole, kitchen, or counter.

A free Arabic tax-invoice generator for Saudi businesses, with QR codes, PDF export, multiple invoice templates, and no account required.

A subscription library and organizer for 3D blocks and textures, with one-click downloads, extraction, filing, and direct insertion into 3ds Max or SketchUp projects.

Project-management software for video studios and creative agencies, covering briefs, revisions, client review, delivery, licensing, and invoicing.

A community travel platform for checking Nepal’s real fares, road conditions, routes, and unmapped places.

A swipeable house-hunting app that presents homes for sale or rent in a single feed, ranked around the life you actually live.

A Windows desktop overlay that displays synced lyrics above Spotify, YouTube Music, Apple Music, Pandora, VLC, and other media players.

An offline, ad-free iPhone workout log for recording sets, food, measurements, and training history, with five free lifting calculators.

Kavach is a Pune-designed personal safety device that triggers a 130 dB siren, strobe, and live-location SOS when both edge buttons are squeezed.

A free Kinande–French–English dictionary app designed to work offline.

Klangio converts recordings, MP3s, and YouTube audio into sheet music, guitar tabs, MIDI, and MusicXML.

A private browser-based answer bank for saving, searching, and copying recurring replies into Gmail, Slack, or a help desk.

A state-by-state reference and planning toolkit for professional licenses, covering requirements, exams, costs, pass rates, retakes, and reciprocity.

Lineora turns photographs into print-ready drawings and art in 52 styles, including coloring-book outlines, charcoal, ukiyo-e, origami, mazes, jigsaws, and color-by-number sheets.

Maverick is a Louisiana waste-tire compliance system that tracks each tire from sale through transport and processing, then builds the monthly WT-02 filing.

An offline wedding ceremony music app that lets couples trim tracks, set fades, arrange cues, and hand the phone to a friend in locked Live Mode.

A Dakar-designed platform that helps private schools in West Africa collect tuition, manage payment schedules, and automate WhatsApp reminders.

A Chrome extension that extracts text from screenshots, images, and scans entirely inside the browser.

A warehouse and 3PL operations toolkit offering shift routines, dock scheduling, receiving tools, KPI materials, and downloadable calculators and workbooks.

A free calculator that finds Palworld offspring from two parents—or works backward to find every verified parent pair for a target Pal.

Pamtio turns a short spoken note about a customer, vehicle, and service into a confirmed follow-up list for an auto-detailing workshop.

A suite of 30 Australian pay, tax, mortgage, and business calculators built around cited rules and exact arithmetic.

A monitoring service for expediters and contractors that checks building permits across jurisdictions and flags changes to reviews, inspections, comments, fees, and statuses.

A two-app Android TV remote that turns a phone into a trackpad, keyboard, media controller, gallery caster, and screen mirror.

A Chrome extension for Whatnot sellers that hears shoe, clothing, and product callouts, then pins them to chat when the host says a chosen trigger phrase.

A swipe-based Pokémon card discovery tool that learns your tastes and collects the cards you want to revisit.

A public rain-and-snow forecast board that ranks 14 U.S. cities, freezes predictions at set times, and checks them against what actually happened.

A Chinese restaurant-operations diagnostic product that turns POS, membership, menu, marketing, and cost data into prioritized actions.

A regional quote-comparison tool for home projects in Washington, DC, Northern Virginia, and Maryland.

A mobile app for truck drivers in Virginia, Maryland, and DC, combining weigh-station status, low-bridge alerts, sourced size-and-weight rules, and driver reports.

A data-intelligence platform tracking data center projects, permits, hearings, construction, capacity changes, and cancellations across 40-plus countries.

A waitlisted service drafts Google review replies for owner-operated restaurants, with the owner approving every response.

A rules-based market screener that ranks stocks and explains daily moves against each stock’s own volatility.

A read-only monitor compares Shopify inventory with Etsy, Amazon, eBay, and Faire listings, then alerts multichannel sellers when quantities, prices, listing status, or orders drift.

A classroom-focused AI tool that turns lectures, screenshots, questions, and course materials into one persistent course notebook.

A private browser tool that splits PDFs into the fewest practical parts under a file-size limit you choose.

An iOS tool that tracks public Instagram follow and unfollow activity for brands, shops, and competitors.

A browser-based tool extracts due dates, exams, readings, labs, and days off from a syllabus PDF, then sends them to Google, Outlook, Apple, or any calendar that accepts an .ics file.

A free map that checks for EPA-registered underground storage tanks and reported fuel leaks near any US address.

A workflow tool that turns teardown photos and estimate exports into documented, priced, carrier-ready supplement findings.

An amenity finder for Texas Buc-ee's, H-E-B, Whataburger, Rudy's, Shipley, Blue Bell, and Texas Dairy Queen stops.

The Manuscript is a paper-first music composition workshop where handwritten scores are photographed, archived, and played back.

A device-local six-week companion for tinnitus check-ins, approximate sound matching, personal sound experiments, and progress tracking.

RoamSum is a bilingual travel budgeting tool that scans local prices, compares payment costs, detects dynamic currency conversion markups, and keeps a running expense ledger.

TurnPro is an iPhone app for reviewing ski footage frame by frame, drawing over turns, and inspecting movement measurements offline.

A marina management system for slips, reservations, guest messaging, crew tasks, inspections, fuel, metering, dock services, and billing.