OpenClear: open-source positive pay for checks and ACH
OpenClear is a multi-tenant platform for matching presented checks and ACH transactions against issued items, with a sandbox, API, and self-hosted deployment options.
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138,751 catalogue cards
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OpenHoop turns Mac artwork into embroidery files
Free, open-source Mac software for turning sketches, images, SVGs, and lettering into machine-embroidery designs.
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paprika3D puts Three.js scenes on the test bench
A Three.js MCP server and Claude Code plugin lets coding agents inspect, control, test, and profile Three.js, React Three Fiber, and WebGL pages.
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Peloravin’s Kaniv field journal
A locally grounded journal about drying and storing herbs, seasonal gathering, and how household water hardness affects infusions.
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GO-SLOW turns Lagos traffic into a board game
A free, browser-based strategy game where players race danfo buses across a Lagos-themed board while blocking each other’s routes.
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PostVigil — Email Investigation
A browser-based toolkit for investigating suspicious email, checking domain health, and preparing follow-up actions for Microsoft 365.
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Punto y Palo: the BOE, translated into deadlines and euros
Garabato turns official notices and laws into short explainers about what changes for people, with practical cards for Spain’s 29-N elections.
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Razorisms: a hockey broadcaster’s phrasebook
A fan-made archive of Dallas Stars broadcaster Daryl “Razor” Reaugh’s phrases, nicknames, and similes, with definitions and source details.
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Rooms of Water: Three literary forms under one cover
Moaya Scheiman presents a literary omnibus combining talks, permissions, and poems.
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Sakari’s Sweater Factory
A free browser idle game about turning a sweater factory into a global empire, one continent at a time.
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A case against TfL’s proposed 74 and C3 changes
A local campaign page explains proposed changes to London’s 74 and C3 bus routes and invites residents to sign a petition and respond to TfL.
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Scotland Grid Watch
An interactive map and dashboard exploring Scotland’s electricity flows, wind curtailment, network capacity, and energy projects.
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Scrib Doon’s Biddy Blas index
An unofficial fan index collecting clips, explainers and news about Biddy Blas and the “Scrib Doon” line.
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Semiconductor Room: A quiz bank for the whole chip-making stack
A free, no-registration study site with explained multiple-choice questions spanning semiconductor fundamentals, manufacturing, circuit design, and computer systems.
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Shikitari Note’s Japanese etiquette and writing tools
A Japanese guide to ceremonial customs, with free tools for writing, checking, and printing formal messages and document examples.
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Shrinkdex’s 45-staple grocery inflation ledger
A public tracker ranks 45 grocery staples by price changes against overall inflation, using U.S. Bureau of Labor Statistics data.
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Signum Average’s data-led journalism
A journalism site that uses data and scientific methods to examine questions in the news, alongside trackers and links to open data.
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SimSightline’s Sim-Racing FOV Calculator
A free calculator turns screen dimensions and seating distance into game-specific field-of-view settings for sim racing.
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Stick in History puts you inside Pompeii’s last days
A stickman history series retells events through a character caught inside them, beginning with a slave in Pompeii in 79 AD.
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Stitch Jam turns photos into cross-stitch charts
A browser-based tool converts photos into printable craft patterns, with DMC colors, stitch symbols, and floss estimates.
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SurgeCast’s Monterey dive forecast
A site-specific forecast for Monterey shore dives, combining seven-day outlooks with live ocean data and ratings for local dive sites.
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Swift A11y’s fifteen browser checks
Swift A11y offers free accessibility-testing tools for QA testers and developers, delivered as bookmarks or a browser extension.
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tampered.app’s hardware-wallet board check
A free, no-sign-up tool invites owners to upload photos of an opened OneKey, Ledger, or Trezor board for a visual implant check.
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ตามใจเปิ้ล’s Shrimp-Stuffed Potato Sales Report
A Thai-language, slide-style report follows the results and production challenges of selling fried mashed potatoes filled with shrimp.