Useful Tools

A Korean-language meme club and set of free tools for freelance developers dealing with scope creep, unpaid work, and AI-era job anxiety.

A free macOS sticky-note app that stores notes as Markdown files and also offers live, command-driven stickies.

A browser-based tool that checks PDFs against court e-filing requirements and offers fixes without uploading the files.

An in-browser NBA lineup model that forecasts offense, defense, and net per 100 possessions, including player-combination effects and an 80% range.

A free, browser-based digital logic simulator with a wire-level AI coach, Karnaugh-map analysis, and import and export for classic Logisim circuit files.

A prototype long cane detects kerbs, steps and head-height obstacles, then signals their location and type with vibration motors in the handle.

A free checker that says it compares a pet’s condition dates with insurers’ policy rules to estimate exclusions, possible re-opening dates, and stay-or-switch math.

A map-based builder lets Assetto Corsa players select a real-world road and order it as a drivable track.

A browser-based calculator for estimating machining stock, part and chip weight, and costs from 3D part files.

A Windows 10 and 11 utility that brings file conversion, editing, and management actions to a keyboard-triggered wheel while you drag a file.

A free suite of candle-making calculators covers batch quantities, wick testing, wax specifications, labeling, shipping, and pricing.

This contour-maze studio turns a preset or hand-drawn silhouette into a maze you can play, with adjustable corridor width and challenge.

A coordinate-based map and field toolkit for exploring Zimbabwe’s geology, historical gold workings, and gold prospectivity.

A browser-based mapping tool that measures farm fields, can add Rural Payments Agency field numbers, and exports maps and data.

BioDioRama says its free browser tool lets users assemble scientific figures, posters, and slides from 3D biology and chemistry models, diagrams, images, and icons.

A free reading tracker that turns books you finish—or put down—into collectible cards.

A Windows and Mac sketchpad for bands to organize recordings, lyrics, chords, practice, and setlists through a shared cloud folder.

A free, open-source Windows app for arranging multiple live streams, chat, and audio in one configurable viewing layout.

A purpose-built stack of perforated rubber discs designed to keep air from reaching municipal well pumps, with a linked workstation for sizing each installation.

A free browser-based reader for structured e-invoices, including UBL, CII, Factur-X, ZUGFeRD, XRechnung and Peppol BIS formats.

FRW4 is a bench-top fishing-rod wrapping machine presented with an interactive 3D CAD model and a browser-based firmware simulator.

RampCast presents hourly forecasts of irregular airport operations, including the chance of disruption and how many departures may be affected.

An interactive commute map presenting Metro Manila rail, jeepney, bus and other routes, with trip-planning and fare information.

A free browser-based reference draws and plays chords, scales and progressions for guitar, piano and ukulele.

Helsehagen presents ten free Norwegian-language apps for everyday health tracking, care routines, and planning.

A free, open-source desktop office suite for opening and editing Korean HWP documents alongside Word, spreadsheets, presentations, PDFs, Markdown, HTML, and mind maps.

A calculator compares the costs of running open-weight models on your own GPU or Mac, rented cloud hardware, or an API.

A free, open-source desktop photo library and RAW developer with optional offline AI tools.

A photography lighting reference that maps 43 visual styles to light setups and shoot sheets tailored to a photographer’s camera, lenses, and lights.

Free checkers help manufactured-home owners investigate title problems, park-sale deadlines, and lot-rent increases by state.

MCHistoryBuilder offers free Minecraft building tools for shaping historical and other structures, with block-by-block plans, 3D previews, and downloads for WorldEdit and Litematica.

A French-language directory compares 24 Muay Thai camps in Thailand, with destination filters, guides, and published camp rates where available.

Free, open-source software for private landlords to organize rental costs and produce German operating-cost statements on their own computer or server.

农站通 presents an AI-assisted way for farmers and agricultural sellers to generate a single-page product website, preview it, and download it as HTML.

A comparison and research guide scores smart rings, watches, bands, and sensors on data access, export options, integrations, and subscription lock-in.

A vehicle-safety ranking compares cars, SUVs, pickups, and vans by driver deaths in real-world crashes.

A free Magic: The Gathering client for desktop and Android, with Chinese card text, many play formats, and offline games against AI.

A plain-language guide to semen analysis results, with linked sources, WHO 2021 reference ranges, and a tool for placing reported values in context.

Surfboard design software for shaping boards, checking their dimensions and volume, and exporting files for CAD, templates, printers, or CNC machines.

A swimming-lane etiquette guide and test that offers a certificate to people who pass.

Tavuni turns spreadsheet-based business rules into a connected application, then previews how a proposed change affects results.

An Albanian-language collection of pharmacy tools for medicine lookup, dose and unit calculations, reimbursement checks, inventory work, and patient therapy schedules.

A free decoder for vintage tractor serial numbers, covering Ford, Farmall, John Deere, and Massey Ferguson models.

A searchable tracker of endometriosis trials drawn from US, EU and UK registries, with filters for recruitment status, updates, results and location.

An interactive model for exploring how AI-driven productivity, labor-market responses, and policy could affect workers’ incomes across countries.

Type Koyomi is an iPhone and iPad calendar that pairs each day with a Japanese typeface, holidays, moon phases, and seasonal almanac details.

A bilingual calendar of free and low-cost pet vaccination, sterilization, and voucher clinics across Southern California.

A free calculator compares cancellation, finishing the term, and stopping renewal for Banfield, VCA CareClub, and Petco Vital Care plans.

A searchable atlas of lake, reservoir, dam, and river-gauge readings, with levels compared against what is normal for the date.

A calculator for setting an engine power target, estimating parts, and working through gearing math.

A free, open-source macOS clipboard app that saves selected text or copied content as searchable files on your Mac.

A Madden NFL 27 film-review project that organizes recorded matches into snaps, asks players to confirm calls, and builds tendency reports from confirmed plays.

A directory of news outlets and online publications organized by 18 editorial beats and by country, with ranked listings by inbound links.

A free tool for marking sections of audio and saving them as separately named MP3 or WAV files.

A searchable reference for when smart devices stop receiving security updates, backed by manufacturers’ own statements.

A worldwide calendar of Pride events and other queer gatherings, with 2027 dates and hotel-cost tiers.

A post-show shipping desk for live sellers that turns stream replays into package weights, combined orders, labels, and packing slips.

The Creator Side offers free checks of creator-agency contracts, offers, and direct messages, flagging terms that may put income or account control at risk.

A city-searchable map and species guide for squirrels, chipmunks, marmots, and related animals around the world.

A Windows simulator for modeling chemical processes, control loops, disturbances, equipment failures, and safety scenarios.

AVIAN Flight Intelligence brings weather, bird activity, flight-planning information, and browser-based bird-sound identification together on one site.

A BL/GL guide tracking series schedules, fan events, licensing, novels, and AI shorts, with listings organized for viewers in different time zones.

An open-source app for copying events between calendars while choosing which details the copies include.

A Minecraft redstone tool lets you request a machine through a compatible AI app, test it in a simulator, and inspect it in 3D.

A virtual assistant for dental practices that handles phone bookings, voice-entered clinical notes, treatment plans, and patient recalls.

Dibou pairs an iPad drawing app for children aged 3–12 with an iPhone app for their relatives.

A Mac utility that opens a file-action wheel while you drag, letting you convert, compress, edit, or share files without opening another app.

A free collection of feng shui calculators and home-planning tools, including satellite-map house orientation and floor-plan overlays.

An open-source macOS launcher for keyboard search, calculations, clipboard tools, window commands, and local file conversions.

A free, no-sign-up planner lets people model stairs, check which home lifts may fit, and compare prices and grants.

A browser tool for shifting a song’s pitch without changing its tempo, looping practice sections, and exporting audio.

A WhatsApp ordering service for Canadian restaurants that turns customers’ typed messages or voice notes into priced pickup orders.

Larea turns a floor plan, photo, sketch, or description into a 2D and 3D home model, then lets you update it by chat or by hand.

A Guangzhou guide for foreign visitors combines travel advice with tools for checking visa eligibility, planning metro routes, comparing prices, and communicating with drivers.

A small suite of data tools covers returning public tenders, microscope-image measurements, and which businesses AI assistants recommend.

An iPhone app turns brief notes about nagging thoughts into a slow sand-smoothing ritual, leaving a marble for each one that passes.

Pesky Pill sends medication reminders that continue until the user scans a code on their organizer, with optional phone-call follow-ups.

A Portuguese-language planner for configuring modular stage floors and producing piece lists, PDFs, and 3D model exports.

PitRadio turns Gran Turismo 7 telemetry into spoken race updates, fuel estimates, and basic driving alerts in Mandarin, Cantonese, or English.

A browser-based planner that estimates Stardust costs for PokeBonk Lab upgrades and lays out a purchase order.

Prunable scans Windows PCs for removable files—including build folders, package caches, browser caches, and old app versions—and lets users approve what to delete.

A Korean-language collection of housing guides and 12 calculators for converting floor area and estimating materials, appliance capacity, and furniture fit.

A state-by-state guide to residential electricity prices, typical bills, utility rate plans, and modeled rooftop-solar output.

The site presents a paper notebook and companion app that read handwriting and dialect, then turn notes into tasks, reminders, calendar events, and message drafts for approval.

A Mac app that replaces names, addresses, and references in Word, Excel, and PowerPoint files with codes before AI processing, then restores them.

Scratchfair checks a rental-car damage claim against 14 potential weak points and can draft an objection letter in the renter’s language and the rental company’s.

A state-by-state comparison of after-tax yields on Treasury bills, Treasury and government money funds, T-bill ETFs, and broker cash.

A collection of browser demos for small utilities, from word lookups and unit conversions to a chess clock and blackjack odds.

A free, open-source desktop tool that visualizes BlinderKitten lighting cues in an IngeTrazo stage model.

A news reader pairs current stories with related Manifold prediction markets, showing probabilities, market movement, and context for each match.

A free, open-source web browser for Apple TV, with WebKit page rendering, ad and tracker blocking, and web video handed off to Apple's native player.

This Mac app animates a typewriter as you type in other apps, complete with moving carriage, ink, and end-of-line bell.

Webill Green presents a platform for metering, routing, settling, and billing traded electricity in South Africa; its carbon-tax return pack is not yet released.

Pomo is a Pomodoro timer for iPhone and Android, with a browser timer and a minute-by-minute square grid.

Web-based software for olive-oil mills to track incoming olives, pressing queues, yields, customer accounts, containers, and SMS updates.

An independent developer's catalog of CAD plugins and desktop utilities for automating repetitive engineering work.

A free guide for comparing airport parking rates and estimating the cost of a trip at 145 U.S. airports.

Akhar presents a Gurmukhi keyboard and lettering studio for making Punjabi text, practicing calligraphy, reshaping letters, and finding fonts, brushes, and stickers.

Ambrel collects screenshots, images, and links on a Mac, then helps you search, arrange, and pass those references to AI coding tools.

ApexGhost analyzes live telemetry across 15 racing games, compares laps, and offers AI coaching plus verified online leaderboards.

A beta platform for French hunting associations to map territory, organize battues, and manage the day’s safety instructions and records.

A free Japanese site for interactive and printable spot-the-difference, kanji, arithmetic, and quiz activities.

A homeowner resource combining sourced ADU guides, planning tools, and a directory of builders and specialists.

BandEar is free, open-source software that lets musicians mix their own in-ear monitor sound on their phones using a computer connected to a mixer or audio interface.

A metal-band name generator that checks candidates against domain, music-platform handle, and exact-name search results.

A reference site tracking American whiskey bottles, state shelf prices, allocations, and release dates.

An interactive globe maps historic battles and sieges from antiquity to the present, with filters for era, place, and war.

A macOS beta that connects Claude Code, Codex, or DeepSeek Harness to an open Ableton Live project, where they can make music through plain-language requests.

A browser-based countdown and time-log monitor for scheduled room checks.

A browser tool for permanent and holiday lighting installers to mock up a home’s lighting and prepare a customer quote from a photo.

A Tamil Nadu electricity-bill calculator shows how charges add up, slab by slab.

An interactive scorer and match-scouting tool for the 2026–2027 FIRST Tech Challenge season, with live alliance scoring, solo practice mode, comparisons, and history.

A browser-based tool for making marriage biodatas in Hindi, English, or Marathi, with printable PDFs and images sized for WhatsApp.

A browser-based tool turns an image into a tiled, print-ready PDF for assembling into a large poster from ordinary paper.

A free, open-source macOS app that monitors and remote-controls the Blackmagic Camera app on an iPhone over Wi-Fi.

A guided setup tool for adjusting Canon camera white balance and flash exposure in photo booths.

BoxCraft3D presents a browser-based packaging workflow for folding dielines in 3D, fitting artwork, preparing presentations, and exporting production files.

A desktop browser studio simulates oil, acrylic and watercolour painting, with multiple tools, three room settings and local project saving.

An online planner sizes plans for sheds and other yard projects, then sells a detailed build plan for $19.

An iPhone hunting-map beta for Ontario that brings land status, WMU seasons, legal light and wind information together, including offline map access.

An iPhone and iPad app for arranging screenplay or novel scenes on digital index cards.

A free Chrome extension described as exporting a WhatsApp Business catalog to a ZIP containing spreadsheet files, product photos, and an offline browser.

A single-cell RNA-seq analysis service that turns researchers’ data into clusters, marker genes, suggested cell types, and a plain-language report.

A French-language planner for scheduling home EV charging around trips, household vehicles, and regional off-peak hours.

A free Bangladesh prize-bond checker that compares bond numbers with recent draws, including numbers entered by hand, uploaded from a spreadsheet, or scanned with a camera.

A shared weather-and-outreach board for three San Diego restaurants with significant outdoor seating.

A free set of concrete calculators, project guides, and references for estimating quantities and comparing costs.

A free set of tools and guides for checking condensation risk, understanding damp, and comparing possible fixes and running costs.

ModLens is a Windows and Raspberry Pi tool for scanning Modbus devices, decoding registers, identifying a register from a displayed value, and logging readings to CSV.

A no-account web app for French bus and tram arrivals, route searches, network coverage and a live map.

A browser tool for previewing margin removal or proportional resizing on a paperback cover PDF sized for KDP.

A free collection of calculators for deck materials, framing, stairs, railings, footings, and other outdoor projects.

A free browser-based screen recorder that adds automatic zoom, panning, captions and device mockups, then exports videos locally.

Dezzie lets you layer image and video effects in your browser, then export stills or looping video.

DocGen Guide catalogs 128 tools for turning data from services such as Salesforce, Airtable, or JSON APIs into documents and other outputs.

A free, open-source Steam Deck launcher for browsing, installing, and playing community DOOM mapsets.

A free fan-made toolkit for the Dressmaker game, with fabric and order-profit calculators, guides, an achievement tracker, and a daily puzzle.

A map concept for finding public EV chargers in Colombia, with connector fit, prices, charging estimates and data sources.

An interactive 3D globe maps historic house museums and homes associated with notable people, with filters for location, house type, and the person’s field.

A daily ledger of AML, sanctions and financial-crime actions, with entries linked to their primary sources.

A beginner-focused bookkeeping site pairing free pricing calculators and a readiness checker with a practice workbook and first-client guidance.

A browser-based editor for adding a QR code to an existing image or replacing one that does not scan.

A fleet dashboard for tracking New York City tickets, tow alerts, vehicle reminders, and related office reports.

A browser-based tool that turns pasted dish lists or photos of existing menus into editable, print-ready pages.

G54 tracks jobs, steps, machines, and progress on a live board, with operators updating work from tablets on the shop floor.

A public search tool for checking what Steam game developers have disclosed about generative AI, alongside the evidence and status attached to each record.

A browsable library of e-commerce storefront captures that records whole shopping flows, including changing interaction states.

Copybook presents a macOS menu-bar clipboard history that sorts copied notes, links, pictures, and colors into dated pages.

Deskbridge says it opens Samsung DeX in a Mac window when a compatible Galaxy phone connects, with optional Wi-Fi pairing.

A cash-flow calendar for Mac that projects daily balances and lets users test how bills, paydays, and purchases affect what remains.

Billing software for small pallet warehouses that builds client invoices from the receipts, shipments, rates, and services they already record.

A free collection of browser tools for tuning instruments, testing screens and devices, and handling small measurement and creator tasks.

An open database comparing FCC-certified GMRS radios’ filed specifications with maker claims and cited Part 95 rules.

An app for logging gout flares and comparing them with collected sleep, wearable, weather, food, water, and medication data.

Enter load dimensions and a route to check oversize and overweight rules across the states on the trip, including permits, escorts, and travel restrictions.

A management system for agricultural spraying operations that connects service orders, crew commissions, aircraft hours, maintenance, and finance.

A Windows time-tracking app that logs foreground application use and, with authorization, separates AI-agent execution time; the site says records stay on the computer.

A reference and calculator site for HVAC/R technicians, with refrigerant pressure-temperature charts and field calculations.

A searchable tracker shows whether third-party ink and toner are reported to work, be blocked, disputed, or unknown for specific printer models.

A community-report tracker sorts PS5 Skyrim mods into statuses such as Bricks, Crashes, Mixed reports, Works, and Unknown.

A free, no-signup checker that looks for signs a website uses PHP and explains whether its visible PHP version still receives security fixes.

Free tools and guides help overseas shoppers estimate the cost of buying from Japan, including proxy fees, shipping, and import taxes.

A collection tracker for vintage figures from 1982 to 1994, with records for owned copies, figures still needed, and their photos.

A free tool for turning a photo and headline into social posts in feed, square, or story sizes, with no account required.

An image editor for replacing text in finished pictures without rebuilding the design.

An iPhone app for tracking One Piece Card Game matches, pairings, decks, and card collections.

A Korean construction-materials procurement platform that describes matching job-site conditions to required documents, then packaging paperwork for review with an order.

A browser-based screenwriting app that formats as you type, reads scripts aloud, and offers tools for keeping attention on the page.

LessonInk is a browser-based whiteboard for teaching, combining handwriting, diagrams, code, circuit simulations, and presentation slides.

Lexware presents a local-first workspace for importing case materials, reading and annotating documents, building a source-linked chronology, and drafting legal notes.

A public database comparing laser engravers, cutters, and desktop 3D printers by specifications, safety features, and prices across markets.

A Mac menu-bar app that turns Korean and mixed Korean-English speech into text at the cursor, with optional cleanup through an AI engine the user already has.

A collection of free, no-sign-up map tools for measuring places, working with coordinates, exploring terrain, and checking sky conditions.

An Arabic-first fleet-management service for recording fishing-trip costs and catch, then calculating and documenting the owner’s and crew’s shares.

Maskerei lets you choose a free papercraft mask or describe a custom design, then produces printable pieces to cut, fold, and glue.

A browser-based converter turns answers from AI chats or Markdown into Word and PDF files, with editable equations, diagrams, and layouts for wide tables.

A browser and mobile tool that suggests medicinal-plant species from a camera view or photo, with a Vietnamese-English catalog.

A free, categorized directory of AI receptionists, booking systems, marketing software, and playbooks for med-spa owners.

A desktop app keeps notes as plain Markdown on disk and shares them with AI agents through MCP.

A 2026 meteor-shower calendar shows peak windows in your device’s local time and offers calendar downloads.

A research directory for publicly reported drone docking stations, microports, and related infrastructure, organized around a map, directory, and timeline.

A French-language set of calculators that estimates building materials for jobs such as tiling, concrete, painting, insulation and drywall.

A browser-based Morse translator that handles text and code in both directions, with audio, light-flashing, image, and practice features.

A marketplace for artists and their teams to find and book photographers, DJs, lighting operators, and other live-show crew.

A search tool ranks U.S. doctors by condition using public records, including Medicare data, research, and clinical trials.

A Mac app that puts music controls, email alerts, shortcuts, screen recording, and file actions around the computer’s notch.

Nudge is a time tracker for DaVinci Resolve Studio that records editing time by project and page, then prompts editors to account for breaks.

A free, open-source desktop editor for screenplays, comics scripts, and books, with research, outlining, and export tools.

A browser-based display for showing songs, prayers, and readings on a leader’s screen, a big screen, and each participant’s phone in sync.

A Korean-language tool for checking Pokémon card-pack stock at nearby CU, GS25, Emart24, and 7-Eleven stores.

A free invoice and quote maker, plus tax, day-rate, and payment-fee calculators for freelancers and small businesses.

Parentice presents an iPhone app for parents and caregivers to practice everyday conflicts with an AI-guided goose family.

A vehicle tracker checks parking and camera tickets across supported cities, totals amounts owed and paid, and flags approaching overdue or tow risk.

A Chrome-based tool for transcribing phone and video calls in English and Spanish, with live translation, floating captions, and optional summaries.

A bill-checking service for US machine shops and fabricators that compares purchase orders, packing slips, and supplier invoices, then marks each line Pay or Hold.

A browser-based analyzer that breaks down Etsy and TikTok Shop statements into fees, deposits, and product-level profit.

A fan-built catalog for browsing Pikachu plushes, tracking a collection, checking photos, and following market listings and events.

A searchable tracker comparing peptide claims, evidence grades, and FDA and WADA status.

A Windows app for coaches and analysts to annotate match video, generate game statistics, and turn panoramic footage into a directed video.

A New Zealand tracker for plug-in solar rules, with a city-by-city payback calculator and information on kits, renters, and party policies.

A browser-based 3D scene tool turns camera placement into prompts and visual references for AI image and video generators.

A mapping tool that turns drawn or imported service areas into ZIP-code lists, with overlap percentages and CSV export.