Useful Tools

A paid audit service re-simulates algorithmic trading backtests independently, then compares trades to check whether a strategy’s apparent edge holds up.

A URL-driven game board for car browsers, where a voice assistant hosts trivia, Jeopardy, chess, or adventure games.

A Thai food-additive reference that lets readers look up E-numbers and products, then compare regulatory positions with research evidence.

An iPhone and Android film-photography companion for metering, tracking the sun, timing development, previewing negatives, and keeping film logs.

A browser-based viewer and editor for time-series data, with plotting, derived-variable formulas, and cleanup tools for simulation and tabular files.

A free browser tool that turns a recording or MIDI file of a single melody into editable sheet music, with transposition and export options.

A free browser-based planner for arranging Gridfinity bins and baseplates to fit a measured drawer, then exporting parts for 3D printing.

An interactive globe pairs cloud imagery from five weather satellites with sunlight and a range of selectable Earth layers.

A browser-based maker converts photos, names, or drawings into crochet graphs, with row instructions, chart editing, and yarn estimates.

A free Catholic examination-of-conscience guide for preparing for confession, with English and Spanish editions.

A searchable marketplace for Japanese homes, with English descriptions and prices shown in the visitor’s selected currency.

A collection of browser-playable instruments, each built around an unusual sound and its story.

A flight-search site that filters out itineraries taking off or landing during Shabbat or Jewish holidays.

An open-source Chrome extension that checks a shopper’s weekly fun-money budget at checkout without blocking purchases.

An interactive public SETI project pairs real radio recordings and observatory data with a plan for a public network to help check claims of alien life.

A free reference site presenting orthopedic outcome-score calculators alongside published thresholds, normative values, and citations.

A Windows and Linux app for publishing art, fiction, audio, video, and social posts across multiple platforms, then tracking their response in one place.

An experimental benchmark that scores AI-generated SVGs of pelicans riding bicycles.

A date-and-time explorer estimates how building shadows cross the pool deck at 1388 Kettner Blvd in San Diego.

A browser-based CAD workspace for repairing meshes, checking printability, creating lattices, and preparing additive-manufacturing builds.

A Mac tool for sending titles and video to live production, with SDI, NDI, chroma key, and—on AIR TAKE 2—SRT and iPad control.

A browser-based Sirius finder pairs local-sky orientation with a sourced guide to the star’s place in astronomy and several cultural traditions.

A browser-based tool for converting images into bead patterns, with palette matching, board sizing, and printable or downloadable plans.

A free French-language Bible study suite built around the Louis Segond 1910, with an atlas, linked-text graph, chronology, thematic trails, and Hebrew and Greek lexicon.

A free iPhone companion for Guadalajara’s MiBici system that checks station availability, compares it with usual levels, and sends alerts for recurring trips.

A free, browser-based set of tools for making bingo and lotería cards, calling games aloud, and checking winners.

BioManager is a free, open-source lab management app for tracking research animals, lab stocks, samples, orders, and notebook work.

Blast Exit checks a wallet address for funds still on Blast and unfinished withdrawals, then explains how to move assets through Blast’s official bridge.

A public tracker for EA FC Pro Clubs club and player stats, match history, rankings, and recruitment listings.

Delightful Data Studio presents a lightning app that turns storm data into a nearby distance, direction, and configurable alerts.

A free checker estimates whether a business may have packaging extended producer responsibility obligations in seven U.S. states.

A browser-based toolset for measuring garment-pattern DXF files and calculating fabric-marker length, efficiency, and per-garment fabric yield.

A browser-playable set of four wavetable instruments, with free VST3/AU plugins for using them in a DAW.

A CRM comparison resource for U.S. small businesses, with a finder, side-by-side comparisons, and sourced details on costs and plan features across 39 CRMs.

A decision-support app for climbers and hikers that combines forecasts, official warnings, station readings, and phone barometer data into a risk level for a location and altitude.

A free library of 150 public-domain hymns and carols, with melody playback in different keys and tempos, projection slides, and large-print sheets.

A Vietnamese-language crypto research site offering exchange comparisons, legal maps, deposit-and-withdrawal route checks, and six free tools.

A free library of fantasy adventures for children, with a picker for session length, player count, and age range.

A free browser-based system dynamics tool for building and exploring models of how everyday things influence one another.

An English–Turkish game-localization service pairs translation with a free checker for string files.

A free, no-account browser tool for plotting large CSV, Excel, JSON and MATLAB files.

A free audio editor for Mac that handles recording, multitrack mixing, effects, plugins, stem separation, and on-device transcription.

A free, browser-based converter turns modern Akai MPC expansion files into programs and sounds the MPC 2000XL can load.

A power-planning tool for sizing gas and diesel generator fleets that keep data centers running while they wait for a utility connection.

A free search tool that presents booked and open units in Gujarat RERA-registered projects by floor and block.

A source-available, self-hosted library for streaming personal audiobooks across devices, with synced progress, offline listening, and ebook read-along.

PastTrace presents a searchable index of historical films, photographs, and individual shots drawn from public archives.

A searchable directory maps dog and cat food brands to registrants, plant information, FDA inspections, and recalls using public records.

A no-login sandbox lets you set an agent mission, adjust permission boundaries, and test them against sample requests.

A local Windows app that captures screen activity, extracts text, and lets you search past frames by exact words or approximate meaning.

A private browser-based tool for listing recurring charges, comparing what you might cut, and exporting the totals.

An unofficial player guide that maps Scapewatch’s game systems and offers drop-odds, XP, and Fortify-planning tools.

Five free calculators help quilters estimate fabric for backing, binding, borders, and quilt tops, with layouts and cutting plans.

Sceneuron describes a Mac tool for adding live signs and captions to Zoom, Meet, Teams, or other video streams, controlled by a Stream Deck, gestures, voice, or AI.

A free browser-based statistics app that lets users import data, choose an analysis, and view results without uploading the data, according to the site.

Steadywag is a care companion for Theo, a dog with chronic illness, organizing records, check-ins, and questions for vet visits.

A Colorado peak-planning resource with routes, trip reports, conditions, and check-ins for fourteeners and thirteeners.

Tactoread presents a library and design workflow for making 3D-printable tactile models of science materials for classroom use.

An FAO Nepal app that uses photos of sick leaves to suggest likely crop diseases and treatment advice in Nepali and English.

A searchable directory of castle stays in Scotland and Ireland, with classifications for authenticity, sleeping arrangements, and price.

A Windows, Mac and iPhone FPV drone simulator with 15 worlds, 10 aircraft, and controls for RC transmitters, gamepads or keyboard.

UniConn presents a way to link an Android phone and a laptop for sharing clipboard contents and files, using the phone as a webcam, and other cross-device tasks.

An iPhone app that aligns an ebook with its audiobook so readers can switch between reading and listening without losing their place.

VoltIQ offers four low-voltage and ICT calculators plus a troubleshooting library for installation and field work.

A Hebrew-language community map for finding camps, art installations, routes, and assistance points in Midburn’s temporary city.

Alma Mater Saturday tracks Washington, Indiana, Calvin, Hope and Wheaton football in one live-score and season dashboard.

Paste in a message to find matching Bufo reactions, copy Slack shortcodes, or download reaction images and GIFs.

A public tracker compares cited costs with patient-reported prices for skin removal and body-contouring procedures.

A browser-based tool that analyzes flight tracks and engine-monitor files, grades maneuvers against FAA standards, and helps create logbook entries.

HausCraft describes a tool for building a 3D record of a home from a floor plan, sketch, survey, or plain-language description, then using that model to plan projects.

A Japanese reference for browsing pet treatment-cost examples by animal, symptom, amount, and illness.

Search a company or incoming phone number to see support-location information and whether the site has a route past its phone trees, chatbots, or hold queues.

A Rainbow Six Siege strategy planner lets players choose a map, site, and operator to get a role-specific round plan.

A Sydney events board arranges gigs, shows and outings by start time, with filters, a map and a narrated weekly brief.

A player-focused information hub for 信長の野望 Online, combining game references, practical tools, community records, and player profiles.

It compares risks named in companies’ SEC filings to surface connections among stocks in a portfolio.

Setout turns approved construction drawings into traceable quantity takeoffs and an explorable 3D building model for NYC builders.

A printable organizer for England and Wales helps families record how to access phones and accounts, what financial arrangements exist, and what steps to take after a death.

A Catalan-language learning tool pairs gralla scores with playback and note-by-note fingering guidance.

A browser-based radio explorer that tunes to a random live station and shows its location, local time, and nearby stations.

A royalty-free production music library with search tools and video-scoring features for film, television, advertising, and games.

A tool for running confidential votes by email invitation, designed around the ballotage needs of lodges and associations.

A paid service turns public records on New York City co-ops and condos into plain-English building risk reports for apartment buyers.

A calibration-management system for scale service companies, with a field app, office review, and customer-facing certificates.

This Arabic-language tool flags possible rhetorical techniques in journalism and transcripts, then lets readers review its suggestions.

A Vietnamese five-plugin SketchUp suite for designing cabinets and turning models into CNC layouts, G-code, labels, and shop paperwork.

This free, open-source tool prepares subtitles, clip markers, summaries, and suggested In/Out points for video editors working in Premiere Pro.

The site presents a tool for identifying Egyptian hieroglyphs from a phone camera or a drawing, with linked activities for learning signs and exploring names.

A free calculator estimates how long a UPS and battery can keep selected appliances running through repeated power cuts in Pakistan.

A paid repair tool for FiveM MLOs and maps: upload a ZIP, get safe fixes, a rescan, and a plain-language report.

A public tracker for AI model releases, deprecations, and shutdown dates, with watchlists, source links, and calendar views.

A car-shopping reference for checking year-by-year changes, trim features, and buy-or-avoid guidance across makes and models.

An open-source prayer notification daemon for Windows and Linux that calculates prayer times locally and supports 21 calculation methods.

The site says it tracks Telegram trade signals, replays them against Binance and OKX prices, and totals each channel’s results.

A browser-based tool turns an image into a multi-page A4 or US Letter poster PDF, with controls for physical size, margins, and overlap.

A Portuguese-language maker workspace for researching product demand, checking model permissions, preparing product images, and estimating 3D-printing costs.

A free macOS menu bar app arranges actual desktop icons into preset shapes or words you type, then puts them back in a grid.

A wind instrument for checking the probability that wind will exceed a chosen limit at a specified height and location.

A free, interactive map for The Witcher 3’s regions, alongside a map of the Continent and guides to Witcher 1 and 2.

A searchable lookup estimates the NOVA processing group of packaged foods and explains the classification.

A set of free bill explainers and calculators helps people understand charges, compare price increases, and prepare to ask providers questions.

A service for compatible AI assistants to check letter PDFs, quote postage, and arrange printing and mailing in Germany—including registered post.

AcreEyes analyzes rural parcels for water, terrain, access, buildability, hazards, utilities, productive soils, and property records.

A set of free calculators estimates AI project costs across model inference, voice, retrieval, image generation, and operational overhead.

A U.S. federal-court tracker connects allulose-labeling lawsuits with named products, filings, and reported outcomes.

Anaxes presents a searchable spacecraft catalog and a service for turning a mission brief into operator quotes and satellite-derived results.

A browser-based tool for labeling a file’s declared human or AI origin and checking who sealed it and whether it has changed.

A browser-based generator for AmneziaWG configuration files in versions 1.5, 2.0, 3.0 and 3.1, intended for use with Cloudflare WARP.

An open-source floating battery bar for Windows 11 that estimates remaining time at different levels of recent system load.

A construction estimating tool that says it turns uploaded plan PDFs into measured quantities and a priced bill of quantities.

A point-of-sale system for Filipino small businesses, with sales, inventory, customer credit, and staff tools.

A shop-counter tool for generating bill-amount UPI QR codes and keeping payment records alongside estimated monthly UPI costs.

A free calculator estimates battery-recycling revenue and margin per tonne using black-mass chemistry, metal prices, feedstock terms, and recycling route.

Bomrun presents a tool for comparing prices, stock, and lifecycle status across distributors, then estimating how to split a bill of materials across orders.

A two-camera system for baseball training facilities reports exit velocity, launch angle, and carry, then turns swings into shareable video clips.

A five-plugin audio suite offers effects, stereo sidechaining, MIDI chord generation, sample-based synth resynthesis, and robotic vocal processing.

An unofficial game reference that turns Neon Abyss 2 data files into linked, sortable tables of items, weapons, characters, and mechanics.

Carta presents a connected workspace for designing tabletop games, writing and testing rules, making prototypes, and preparing production and marketing assets.

A sign designer that provides layered DXF and SVG files with cutting recipes for CNC routers.

A plane-spotting app uses a local radar to turn nearby aircraft into collection entries and a searchable spotting logbook.

A described service for reading and replying to WhatsApp messages through email, aimed at people without smartphone access.

An unofficial Clash of Clans planner collects upgrade costs, timings, guides, and progress tracking for Town Hall 3 through 18.

A free set of concrete, deck, and fence calculators estimates quantities, weight, and material costs from project dimensions.

A browser-based tool for arranging photos into labeled contact sheets and exporting print-ready PDFs or PNGs.

An interactive map for exploring how trees, buildings, and surface choices could change outdoor heat around the University of Sydney.

A browser-based solver lets you scan or enter a cube from 2×2 to 7×7, then follow its solution move by move on a 3D model.

A Windows screen recorder that turns clicks into adjustable zooms and offers cursor, caption, and video-export controls.

A browser-based artificial-life simulator where programmed bots interact, reproduce, and evolve through mutation.

A Windows desktop app brings race planning, live-session tools, replays, and race analysis together for Le Mans Ultimate.

A digital rota planner for teams of 5–40, designed around assigning shifts, tracking hours, and sending each person their own schedule.

A pre-release, self-hostable Discord alternative built around Nostr-key identity, with text chat, voice, screen sharing, and community servers.

A step-by-step pre-production tool that breaks down a screenplay, arranges scenes on a stripboard, and produces shooting schedules and PDFs.

A free online drawing room lets two people make something together on one canvas and save the result.

A Shopify bulk editor that describes previewing product changes before writing them, recording partial runs, and undoing a run.

A mobile app for live electric-unicycle telemetry, ride recording and analysis, wheel settings, and route planning.

A multilingual database for browsing farm and agricultural scale models by maker, scale, machine type, and other details.

A browser-based tool for adding adjustable synthetic grain to static images and downloading the result.

A free macOS app for reversing film-scan order, adding roll metadata, renaming files, and making printable contact sheets.

A UK-wide desk-based site review tool that gathers hazard and constraint information for construction projects and produces a pre-construction report.

A US-only prospecting tool that ranks river spots using terrain, waterway, mine, land-claim, and access data.

Homestead Ledger estimates Florida property taxes by county and models how the proposed Amendment 3 exemption could change the bill.

A free, no-account tool that detects faces in videos and lets you blur or cover them before exporting in your browser.

Forever Atlas organizes WoW Forever beta classes, talents, spells, items, and dungeons alongside Classic Era comparisons, with search and character-planning links.

A browser-based music studio for composing with a piano roll and procedural instruments that synthesize sound on your machine.

Fox Hot Air describes a weather and flight-planning tool for hot-air balloon pilots, combining forecasts, launch and landing information, and airspace checks.

A free, open-source Mac app maps disk usage, helps trace large folders to their files, and lets you review removals before they reach Trash.

A free collection of audio and music tools for tasks including transcription, caption-making, audio editing, and instrument practice.

It helps MHT-CET applicants compare their merit details with engineering-college admission cutoffs and test possible CAP option-form choices.

A phone-first sales and stock tool for Ghanaian tyre, battery, and auto-parts dealers, with credit tracking and WhatsApp warranty messages.

An Android app helps delivery and gig workers track costs, net profit, hourly earnings, and shift activity.

A town-by-town comparison of regional and national fiber plans, using their effective monthly cost over 24 months.

Groundproof is a location-checking service for people monitoring property construction in Nigeria from abroad.

Hazwise presents a photo-led tool for UK schools that prepares COSHH forms from product safety data sheets and keeps them in a searchable register.

A searchable catalog of construction, mining, and crane diecast models, with listings organized by manufacturer, scale, and machine type.

A Hong Kong Chinese character lookup tool shows standard glyphs and animated stroke order, with controls for playback speed and writing grids.

A searchable manga catalog that connects titles to the TV shows, people, awards, and rankings that brought them attention.

A software maker’s collection of focused tools for VR developers, teachers, colleges, and a school-age learner.

Imprintal presents an agent-driven tool for laying out Markdown as reports, magazines, brochures, and picture books.

An interactive radar imagines future jobs by combining real-world signals, science fiction, and creative thinking.

A German-language comparison of LLM API prices and AI subscriptions, with cost calculators and price alerts.

A browser-based analyzer for Mexican CFE electricity bills, presenting consumption, billing history, and charge breakdowns from a PDF.

A display service for jewelry shops that puts live gold prices, shop branding, and configurable price margins on in-store TVs.

LANlink connects Nintendo Switch games with LAN or local-wireless multiplayer so friends in different places can play together.

Order Checker compares a cabinet factory’s acknowledgment with the customer’s order and returns a marked-up copy showing discrepancies.

Layzbooks is a desktop app for laying out photo albums, sending client proofs, and arranging printing and delivery.

Lift Layout offers a free room planner for arranging a gym, alongside commissioned design and equipment-sourcing help.

LLM Price Index compares token prices for models across providers and tracks price changes and delistings.

A browser-based 3D planner for placing construction equipment, tracing truck routes, and planning work against the context of a real city lot.

Masdan presents a self-hostable finance tracker for bringing household accounts, spending, budgets, bills, and goals into one ledger.

A browser-based 2D drafting app for editing DWG/DXF plans, taking off quantities, and exporting scaled PDFs.

A native macOS app for dictating into any app, capturing meetings, and transcribing audio or video files.

The site presents an Android point-of-sale system for restaurants, cafés, sweet shops, kirana stores and other small businesses.

A free tarot-reading experience where readers choose a question, shuffle cards themselves, and get a gentle reading from Mimi, a black cat.

A corridor-specific timetable site brings train, bus and river-bus information for Richmond to Waterloo into one place.

Mitigation Logbook demonstrates an applicator-held record for tracking whether pesticide-label mitigation measures were carried out.

A free collection of calculators and reference tools for delay and reverb timing, compressor release, note frequencies, harmonics, and microphone phase.

A searchable reference database for collectible village buildings, figures, and accessories, with manufacturer details, item codes, photos, and sources.

Modoo is a Windows app and membership for switching custom mods on and off in PC games, without manually moving game files.

A free mod manager for Cheese Rolling that installs and updates mods on macOS, Windows, and Linux, with a Lua path for making your own.

A free, open-source macOS dictation app that runs speech recognition on your Mac and inserts the text at your typing location.

A boiled-egg timer calculates boiling and cooling times from the egg’s size, starting temperature, altitude, and desired yolk.

A free, open-source beta desktop companion that puts multi-client previews and game overlays alongside EVE Online.

A free Japanese year-end tax form tool that reuses details from last year’s input PDF and produces current-year forms.

A searchable guide and toolkit for quests, businesses, fishing, travel, recipes, and other Nivalis Nights systems.

A landscape tablet AAC app combines a communication board, typing, and spoken output, with vocabulary and recordings stored on the device.

A Spanish-language browser editor for turning photos into collages with embroidery motifs, stamps, and text.

A keyboard launcher for Mac that brings app search, clipboard history, file conversion, and developer tools into one panel.

A free, open-source Android beta lets DoorDash Dashers filter delivery offers using their own rules.

A browser-based tool for converting, compressing, and resizing HEIC, WebP, AVIF, JPG, and PNG images.

A free browser-based photo culler that lets photographers review RAW shoots, rate frames by keyboard, and export picks for editing.

Optiontech lets shoppers compare prices, trims, specifications, and options across Korean-market vehicles from six manufacturers.

An interactive padel trainer asks players to choose a shot and target in match scenarios, alongside a quiz on the rules.

Um app de notas que liga páginas com links, busca anotações e guarda arquivos Markdown no Google Drive do usuário.

A side-by-side calibration tool for choosing code fonts, sizes, colors, and spacing that feel comfortable to read.

A browser-based tool for cropping, resizing, and converting images to specified pixel dimensions and file-size limits.

A World of Warcraft addon and stats site that identifies organized groups in Epic Battlegrounds, with confidence labels, match history, and player rankings.

Raleni helps families find California funeral homes and crematories, check license status, and see itemized prices where available.

A Ukrainian-language digital memory book and tracker for pet-rat owners, with profiles, stories, photos, weight records, vet visits, and memorial pages.

Raymikuna’s app turns a short story idea and a parent’s voice recording into an illustrated bedtime story narrated by that parent.

ReadyTH offers a household preparedness assessment and hazard-specific emergency guidance for people in Thailand.

A browser-based lifting coach that uses your phone camera to count reps and give live form feedback.

Resonant Map is an unofficial interactive guide for filtering Control Resonant locations by zone and category, then opening markers for directions.