Useful Tools

A Japanese-language guide to 41 chart indicators, paired with tools for testing and comparing trading rules against nearly 19 years of Nikkei daily data.

A forthcoming French-language desktop CAM program that combines constrained drawing, CNC toolpath calculation, material simulation, and machine control for woodworking.

A free set of calculators for military pay, housing allowances, VA disability, fitness tests, retirement, and education benefits.

A directory for Munich and Berlin lets people filter restaurants and cafés by noise, seating, light, atmosphere, and how ordering works.

Condo Due Date organizes Florida condo communities into deadline and public-record lookups for milestone inspections and structural integrity reserve studies.

A free browser-based writing app for plain text and Markdown, with offline use and sharing built around links that contain the text.

Claimstone describes an open-source workflow for finding research papers and answering fixed questions with evidence tied to verbatim quotes.

An interactive map gives Berlin addresses a 0–100 public-transport score, with nearby stations and walking times for people comparing flats.

A browser-based tool for making a personal travel passport with destination stamps for Bangladesh districts and countries or regions, downloadable as PNG, JPG, or PDF.

An iPhone app for setting garbage-collection reminders using the recurring-date rules printed on local waste calendars.

This calculator estimates how much of a paycheck can be garnished under federal and state rules, with options for several types of debt.

A legal-brief checker compares citations and quoted passages with public court records, then groups results by what needs attention.

A public guide to starting a trucking company, with filing requirements, fee and deadline references, and calculators for common tasks.

GroundAlpha tracks large build-outs, starting with AI data-center campuses, using satellite passes, field photographs, permits and news.

A Windows structural-analysis program that reads STEP assemblies and checks welded frames without requiring a mesh.

Isle turns a MacBook’s notch into a hover-open panel for music, timers, files, screenshots, system information, and AI usage limits, with a small character named Islet alongside.

Listed Water matches a ZIP code to the water systems serving it, shows EPA-recorded measurements, and lists filters with certifier-listed reduction claims for those contaminants.

A pre-lease planner that maps agency requirements, fees, and dependencies for new brick-and-mortar businesses.

PuppyPad offers free personal subdomains for hand-coded HTML homepages, with a live-preview editor, guestbook, and hit counter.

A browser-based cassette player that turns YouTube, SoundCloud, and Audius links into customizable, two-sided mixtapes.

RoomBatch helps plan an accent wall with a visual studio, material calculators, cost comparisons, and project ideas.

A free Korean-language portal for workplace safety managers, combining document builders, compliance calculators, legal references, and job and community links.

An interactive filter and downloadable font that stamps “bullshit” over 237 corporate buzzwords as you type.

A free browser-based toolkit for previewing Terraria worlds, searching seeds and loot, and opening or editing .wld files.

A violin practice companion for recording passages and reviewing intonation, scales, vibrato, and tone quality.

A free, offline-capable sound partner for practicing the 24 Chang-Hon forms of Taekwondo ITF.

An open-source Android app and browser extension checks product photos or webpage content for vegan ingredients and materials.

An iPhone app for nervous flyers presents daily claims about flying and asks users to judge them before revealing supporting evidence.

Paste in an email, post, or review to get a grade, with a dictionary of telltale phrases and a short certification exam.

A community board where researchers and students propose questions about arXiv research, vote on outcomes, and check them against evidence.

This Mac app holds recent screen video in a rolling buffer, so developers and testers can save a clip and send it to Jira after a bug appears.

CentaMa .IA offers an Android APK for an app designed to flag suspected SMS, chat, and call scams, with spoken warnings in local languages.

A browser-based chess-board recognizer turns screenshots, book diagrams, and video frames into positions that can be checked and exported.

A browser-based catalog and billing tool for licensed firecracker stalls: customers build an item list on their phones, then the stall scans it and bills at the counter.

An open-source field-measurement project offers a live demo and a Python tool for estimating canopy structure from fisheye photos.

A free menu-bar app that turns speech into text in the app under your cursor, using on-device speech recognition.

A live globe explores atmospheric rivers using ECMWF models and ensemble data, with forecasts extending up to 15 days.

An interactive workbench for mapping FRC robot wiring and exploring how mechanisms respond to gearing, load, and battery voltage.

A collection of browser-playable 3D models, lessons, and tools for electronic instruments including the MicroFreak and SP-404MKII.

A desktop tool for FuelTech PowerFT tuners that bins datalog samples into ECU breakpoints and compares each cell with its target.

A self-hosted tool for turning family internet schedules and limits into firewall policies for a UniFi gateway.

A free, open-source Windows system monitor that slides out from the screen edge to show hardware readings and game metrics.

An offline, open-source desktop app that searches screenshots by remembered text, with builds for macOS, Windows, and Linux.

A free set of Hollow Knight tools for tracking save progress, finding missing collectibles, and comparing charm builds.

Hey Kosher scans product barcodes and shows how five traditions read the ingredients and certifications.

A French-language app for people with chronic illness to log energy, crashes, symptoms, triggers, and personal notes.

A flamenco practice metronome for ten palos, with recorded accompaniment, adjustable tempo, and ways to follow each palo’s compás.

Minpakucho calculates short-term-rental operating days from Airbnb calendar data, showing how many days remain under the annual limit and when the cap may be reached.

Paid Leave Calc estimates weekly and total paid-leave or state-disability benefits using state-specific rules and the visitor’s pay and leave details.

An unofficial fan-made tool that maps Palworld parent pairs to offspring and helps plan breeding routes from pals you already own.

A Houston-focused service that compares itemized hospital bills with hospitals’ published prices, federal coding rules, and insurer explanations of benefits.

A free tracker lets Jeep owners register rubber ducks with QR codes, then collect sightings on a map.

A model-by-model guide to vintage Penn and Abu Garcia reel prices, using medians from completed eBay sales.

An interactive calculator estimates the value of each NFL or college team spot in 2026 Bowman Football card breaks.

ScreenLight combines lighting-console and media-server functions in desktop software for programming fixtures, running video, and coordinating show cues.

A sky-sighting identifier compares a reported time, place, motion, and appearance with evidence for aircraft, weather, fireballs, aurora, launches, and other events.

A browser-based editor for adding energy streams, ghosts, and trap effects to cosplay photos and short clips.

SURVIVODRIVE presents a 256 GB offline reference library, with manuals, maps and an AI assistant designed to answer from the material without internet access.

Thought Control is a local-first notebook for notes, tasks, dates, and reminders, usable from a terminal and shared with agents.

A free browser tuner for guitar, bass, ukulele, violin, and other instruments, with microphone and by-ear modes.

A calculator and comparison of web-hosting costs that accounts for introductory terms and later renewal prices.

A free Mac menu bar app compares the response time of your router and the internet to help locate slowdowns and outages.

An open-source, locally run pipeline that turns a prompt or image into a rigged, animated 3D game character.

A free set of browser-based calculators for carton, pallet, container, volume, freight-weight and export-document planning.

A searchable archive for inspecting and comparing AI models’ answers to shared prompts across text, code, audio, image, and website tasks.

A Mac mail app that labels incoming messages and gathers the ones it thinks are waiting for a reply.

A free Spanish-language calculator for dividing shared bills, tips, and transfers between friends.

An Android app records ECG and related data from a Polar H10 chest strap, then lets users mark moments and export the recordings.

A North Jersey tool estimates whether floodwater at a selected location would be fresh, salt, or brackish, then offers hardware protection and salvage guidance.

A collection of material calculators and project planners that turns measurements and product specifications into purchase quantities and lists.

A free converter turns wholesaler Excel or CSV price lists into Shopify import files, with column review and configurable markup.

A free public calendar of Alabama business and entrepreneurship events, organized by date, metro area, and event type.

Three free browser-based tools check break-even ad performance, Google Ads Editor CSV imports, and Shopping product titles.

A calculator for estimating the yield, cash flows, tax effects, and interest-rate sensitivity of BTPs and other bonds.

A French-language pool-water calculator that uses stabilizer (CYA) levels to shape its treatment recommendations.

An iPhone camera app records sequential clips onto finite, styled tapes instead of an endless camera roll.

A pixel-art desktop pet for Mac and Windows that reacts to typing, tracks AI-agent activity, and offers reminders and a Pomodoro timer.

A browser-based transit app showing nearby bus, tram, trolleybus, and train departures in an analog split-flap style.

A public search tool for Dota 2 heroes, items, abilities, and gameplay tags, with filters for what they do.

A native app for Apple Silicon Macs that manages charging limits, sleep behavior, and keeping a closed Mac awake.

This New York City beta helps a group choose a date and a restaurant from everyone’s availability and written preferences.

Bellow reads a script through your earbuds a few words ahead, so you can deliver it while looking at the camera or the room.

PropertyScope is a beta service for buyers and agents that turns uploaded property documents into a cited condition report.

A set of free home-cinema tools for planning a room and speaker layout, interpreting Room EQ Wizard measurements, and choosing what to watch.

A practical runbook for understanding Joyagoo orders, with calculators and a sampled list of finds.

A French-language tool for micro-entrepreneurs that turns Whatnot weekly order CSVs into revenue summaries, estimated contributions, and bookkeeping exports.

This walking app reveals hexagonal map cells as you visit them on foot, then keeps the explored terrain visible.

A prototype that connects existing transceivers to a PC for recording, AI transcription, search, and sharing with smartphones.

A forthcoming French-language iPhone app for prayer times, adhkar, Quran study, and gentle practice challenges.

An unofficial companion for the game, combining a searchable wiki and quest guide with a venue planner that reads save data in the browser.

A French astronomy guide combines a city-based sky forecast, an observing calendar, a sky map, and advice on choosing an instrument.

A service for race circuits that presents championship dates, entrants, standings, open seats and results while leaving existing timing, booking and payment systems in place.

An unofficial guide to the Lagos Life browser simulation, with career, money, map, and starting-profile tools.

A free browser tool for designing pony bead tapestries, counting materials, estimating finished size, and exporting printable guides.

A football statistics project counts the pass that sets up an assist, with player rankings, league comparisons and illustrated goal sequences.

An iPhone app for sorting jobsite photos by job and sending daily work reports in PDF, HTML, or CSV.

A browser-based job tracker for small-engine shops, covering equipment check-in, estimates, repair status, pickup reminders, and invoices.

It compares public-works approval timelines across Ligurian entities, using official records to help construction firms weigh delays before bidding.

A QA tool for Articulate Storyline 360 courses that looks for bugs likely to block or frustrate learners.

LineWork turns deeds, plats, and legal descriptions into georeferenced CAD linework, then checks completed survey sheets against a checklist and source records.

Tracking Memories describes an app for leaving words and up to six photos at a real-world location, sealed until another person comes within 30 metres.

A free shopping tool that compares 78 everyday grocery prices across six Toronto chains, using weekly flyer deals and regular prices to estimate cart totals.

A free, open-source tool for disabling ads, telemetry, and preinstalled apps on Android TV and Google TV devices, without root; changes can be reversed.

Desktop church-presentation software that listens for Bible references and displays the corresponding verse during a service.

A database for comparing triathlon, time-trial, and aero road bikes, with fit, component, price, and race-rule tools.

A browser-based GEDCOM viewer that turns family-history data into an interactive tree you can explore across branches and years.

A browser-based tool for orienting STL, OBJ, and PLY scans to X, Y, and Z, with options to recenter and export them.

A community-maintained database tracks whether games’ anti-cheat systems work on Linux and Steam Deck, alongside tools for checking libraries and diagnosing logs.

Axsen is an iPhone and iPad app that presents device sensors, connectivity, and hardware details as live gauges and charts.

A free web app that pairs two existing devices by QR code or link to stream live video and audio.

A collection of calculators for livestock, poultry, hunting and butchering, wood heat, smoking meat, and farm projects.

Bakeblock lets neighborhood bakers set up a shop link where customers can preorder and pay for local pickup.

A collector-focused census tracks red and green copies of 1996 Bandai Carddass prism cards graded PSA 10.

A free tool for formatting reference lists in styles used across Japanese humanities, sciences, and engineering.

A browser tool arranges artwork into printable layouts for pinback buttons, with PDF and high-resolution image exports.

A read-only Cloudflare cost viewer that lays out account spending, usage, invoices, and upcoming domain renewals.

A free desktop songwriting app for macOS and Windows that generates editable chord progressions and exports MIDI, audio, and sheet music.

Citesheet offers to fill Excel security questionnaires using a company’s own documents, with a source quote for each supported answer.

A workflow for routing behavioral-health insurance denials and assembling evidence checklists and editable appeal packets for human review.

A French-language tool for cataloguing trading cards, tracking their prices, and keeping a collection available across devices.

A free browser-based tool for teachers to arrange student seating, apply placement rules, and print or export charts.

A Mac menu-bar app for picking colors from the screen, collecting palettes, checking contrast, and exporting color values to code.

A browser-based image compressor that says it preserves each JPEG’s original color-sampling detail while letting you choose quality or target file size.

A scheduling app for general contractors and office admins coordinating subcontractors across house-flip projects.

A free buyer-research guide for comparing commercial cryotherapy equipment, ownership costs, supplier terms, and site requirements.

A free browser-based tool for making CSE references and in-text citations in the 9th or 8th edition.

A free browser woodfish lets you tap out daily counts, use a guided meditation mode, and compare “merit” with friends.

The Argentine service checks traffic-ticket records and, when it finds grounds to contest a ticket, drafts a PDF appeal for the driver to submit.

A storefront and order-management tool for Algerian sellers, covering order confirmation, courier shipping, and cash-on-delivery tracking in Arabic and French.

The site organizes public court records into counts of lawsuits involving franchise networks, with current coverage focused on dental chains in São Paulo state.

An electrician’s app for placing symbols on floorplans, drawing and checking circuits, and exporting PDFs across Apple devices and the web.

A free comparison catalog for home espresso machines, with filters for specifications, dimensions, features, and recorded prices.

FACTS is an on-site factory analytics system that calculates OEE from machine signals and presents it in dashboards, timelines, and downtime reports.

A free, open-source desktop file converter for Mac and Windows, controlled by dragging a file toward a format button.

A ring-sizing tool that compares measurement methods, recommends a size, and explains how confident it is in that recommendation.

An NBA research site compares teams’ rest and travel schedules, and lets readers look at shooting by how long players have rested.

A beta mapping tool for New Hampshire whitetail hunters that ranks terrain features where deer travel may narrow into corridors.

A free Windows app for playing darts at home, with scorekeeping from a phone or tablet and optional camera-based scoring.

Furl presents a document-collection workflow for accountants, bookkeepers, loan officers, and others who need clients to send complete, correctly sorted files.

A Korean freight-forwarding tool that rechecks carrier and terminal vessel schedules and flags changed ETDs or conflicting dates.

A browser-based tool for designing 3D-printable gears and checking their fit before export.

A calendar and reference site for checking Ethiopian dates, converting dates, and finding holidays and fasting periods.

A tool for turning chess games into short meme videos, with Stockfish identifying the dramatic moments.

Leita is a free Chrome extension that finds exact words or highlights passages matching a question or description.

An iPhone strength-training log that uses how hard your last reps felt to recommend the weight for your next session.

A free Mac app for talking-head videos pairs a teleprompter and starred takes with Claude Code-assisted editing and social-post drafts.

A macOS app tracks usage limits and estimated spending across AI providers, with additional tools for managing coding agents’ memory files.

An interactive atlas for exploring hikes through illustrated 3D maps shaped by real elevation data.

GumScout presents free gum-recession checks and dentist-prep resources, alongside a preview of an app for comparing monthly mouth photos.

A free planner combines yard areas, material layers, depths, and waste into a shopping list of cubic yards, tons, or bags.

Harf is a Mac utility that detects when you’ve typed Arabic or English with the wrong keyboard layout and switches the text to the intended language.

A free browser-based trainer that listens to harmonica notes and gives live pitch feedback for practicing bends.

A garden planner that schedules plant care around your town’s frost dates, with daily tasks, plant calendars, and moon-phase day types.

A free set of fan-made calculators and guides for planning crops, animal purchases, fishing, and gifts in the mobile game Harvest Town.

A fan-built app for Halloween Horror Nights crews to rate houses, zones, snacks, and drinks while tracking their night.

A used-boat listing evaluator that takes screenshots or pasted listing text and returns a price verdict, warning signs, and questions to ask the seller.

An interactive map colours Tokyo by estimated train and subway travel time from a chosen starting point.

Free calculators and plain-English guides estimate injury-settlement take-home after fees, costs and liens, alongside lawsuit-funding costs and state rules.

A Mac app that converts DSLR-scanned 35 mm negatives, applying one setup across a whole roll.

A tool for wedding, birthday, and baby-shower hosts to personalize print and digital invitations, then track RSVPs.

The service condenses room finishes, door and hardware schedules, and drawing conflicts into a print-ready 11×17 PDF.

A free, open-source macOS app sets up Wine and Windows Steam so compatible DirectX 9, 10, and 11 games can run on Apple Silicon Macs.

A Japanese comparison tool estimates smartphone costs across carriers, including the handset and calling charges.

Kinetune makes word-synced lyric videos in multiple formats and silent Canvas loops for Spotify from a song and its cover art.

A free Mac and Windows app reminds people to look away from their screens, with a separate version for children.

A tool for recording guitar-pedal settings, capturing how they sound, and tracking which rigs get used.

An unofficial guide and calculator compares pay across Lagos Life careers, using player skills and available workdays to suggest jobs and estimate weekly income.

A Lake Murray dashboard for water level, temperature context, river readings, and historical records.

A browser-based 3D-printing tool for turning photos into lithophanes and models into fitted cases, with STL and 3MF exports.

Limen describes a focus blocker for apps and websites, with scheduled limits and real-person support when users are tempted to break them.

A set of 12 tools for trimming, converting, inspecting, and otherwise editing video and audio files in your browser.

A set of free DIY layout calculators that turn project dimensions into visual plans, tape-measure marks, and printable job sheets.

MeshBadger presents a browser-based workflow for inspecting, repairing, filtering, transforming, validating, and exporting geospatial data.

An iPhone and iPad app that maps a logged period to hefsek, seven clean days, mikvah night, and related onah dates.

A practical guide to permits, title and tax steps, installer licensing, and moving costs for manufactured homes.

The tool analyzes the colors in images you choose and builds new palettes around their relationships, with exports for creative apps and code.

A home-mycology site offering calculators for substrate, agar, pressure-cooker sterilization, and biological efficiency, alongside sterile tools and practical grow notes.

A beach-by-beach guide to conditions, water quality, tides, forecasts, parking, and local guidance around Naples, Collier County, and Marco Island.

A Windows desktop tool for Pakistani battery shops, covering invoices, inventory, customer and supplier claims, discount calculations, ledgers, and profit reports.

Noma proposes app-aware trackpad controls that adapt to the program in use and turn repeated sequences across apps into one action.

Noticed describes a meditation journal and bell timer for practitioners following The Mind Illuminated’s ten-stage path.

A Turkish-language tool for optical shops that brings prescriptions, sales, collections, and customer reminders into one workflow.

An iPhone app for following a chosen sumo wrestler through tournament widgets, sealed results, daily picks, and ranking information.

Outis is a desktop tool for replacing identifying details in legal documents with labels before sharing text with an AI assistant.

A 3D packing tool for live-event crews to arrange cases in trucks and prepare layouts for load-out.

A shared packing-list app that carries items and notes from one trip into the next.

A browser-based practice interface for examining a synthetic neuro-ophthalmology patient, with controls for eye movements, cover tests and pupils.

A tool for subcontractors to generate AIA G702/G703 pay applications, change-order narratives, and lien waivers from a Schedule of Values.

A browser-based tool for associations, NGOs, and campaigns that extracts handwritten names and email addresses from photographed petition pages and exports them as CSV.

A prefecture-by-prefecture directory of places to play pickleball, with facility fees, equipment rentals, and trial events.

A browser-based tool for turning PNG, JPG, WebP, BMP, GIF, or SVG images into 3D-printable models, with several conversion modes and a live preview.

The service tracks public liquor-license applications for new bars and restaurants across California, New York, Texas, Missouri, Oregon, and Chicago.

A paid daily feed that filters New York City construction permits for specialty trades and suppliers.

A clinician-built copilot for family physicians in Türkiye, with workflows described for vaccine planning, pregnancy follow-up, women's health, and lab or prescription review.

A guide and set of calculators for the game Probably Stolen, covering store finances, rat genetics, water purification, and other survival systems.

Pulogo is an iPhone app that sorts screenshots and saved social posts into searchable categories and turns them into things to do, keep, or dismiss.

A free app that identifies processional marches from a few seconds of phone audio, with a searchable catalog and an offline mode.

Rassam presents a free Windows image editor for layouts, pixel art, frame and timeline animation, node-based effects, and 3D elements.

Redeemit helps organizers issue QR-coded vouchers and scan them when food, drinks, kits, or other items are handed out.

A small tool turns a job rejection—or a recruiter’s silence—into a formal refusal letter you can copy or share.

A free tool that removes or replaces the background across an animated GIF, processing its frames in your browser.

A browser-based converter turns bank statements into spreadsheet and accounting formats, with balance checks built into the workflow.