Pressmark Keeps Invoices on the Device
A browser-based invoice generator that builds vector PDFs locally, with invoice history stored on the user’s device.
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143,648 catalogue cards
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Prompt Butter Jam, the prompt redliner
A free tool that marks up coding prompts before they reach an AI assistant, identifying vague goals, missing constraints, and unstated assumptions.
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ProofChecked makes logic proofs explain themselves
A guided practice tool for high-school and college students working through supported propositional-logic proofs.
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RecoverNode, for servers that should not stay down until someone notices
A guarded recovery system for self-hosted Linux servers, Nginx reverse proxies, websites, and application services.
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RentProof turns Singapore rental photos into evidence
RentProof helps Singapore tenants document a rental from move-in through handover with dated, tamper-evident photos, receipts, repair records, and a final report.
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Rent Wise TO: inspect the building before you sign
A free Toronto-area rental research tool that scores registered apartment buildings from 1 to 10 using city inspection records, open enforcement cases, and resident reviews.
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The Restaurant Bill Generator
A browser-based tool for making itemized restaurant bills and receipts with tax, tip, GST, currency, and printer-ready export options.
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Root + Reach: a digital studio for yoga teachers
An all-in-one business platform for independent yoga teachers, combining websites, classes, bookings, payments, memberships, marketing, and digital programs.
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CyberHoops: Basketball by Seed
Eric Rossi’s personal site presents CyberHoops, a deterministic 1v1 basketball simulator whose matches can be reproduced from a URL seed.
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Roads On The Air
A road-trip platform for amateur-radio operators to plan journeys, broadcast approximate positions, log contacts, and earn route and distance awards.
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Rustam Jewelers: Gold, Priced by the Day
A family jeweler in Mansehra offering hallmarked gold jewelry, live sarafa-rate pricing, WhatsApp inquiries, and video viewings for customers abroad.
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SealedDrop, for files that should disappear
A one-time encrypted file-delivery service that encrypts files in the browser, sends a single link, and deletes the transfer after download or expiry.
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Sentinel, the Anonymous Seven-Day Reset
A private, message-delivered seven-day mentorship for people questioning a nightly drinking pattern, offered without a name, file, or clinic.
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A Cask, Finished with Your Hometown Water
Setouchi Island Whisky presents a three-year cask-owner program based in Suo-Oshima, Yamaguchi, with Japanese mizunara barrels and a proposed finish using water connected to the owner's birthplace or home.
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BeltWorks Turns Your Own Problem Into a Lean Six Sigma Project
An online Lean Six Sigma academy where learners study White, Yellow, and Green Belt material by applying each method to a real problem from work, home, study, or community life.
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SignAtlas, a Russian atlas of sign regulations
A civic reference tool that organizes official rules, documents, and approval guidance for storefront signs and advertising structures across Russian cities.
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Sofea: Leipzig’s Electronic-Art Radio Archive
A Radio Blau program about electronic music, artists, club culture, and the spaces where scenes take shape.
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Stilltale Turns Tiny Image Changes Into Stories
Stilltale is a creation and distribution tool for Japanese “difference novels”: sequences of nearly identical illustrations assembled with dialogue and small visual changes.
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Stubnail, the House Record
Stubnail builds a permanent maintenance and service history for a property, tying receipts, warranties, contractor notes, and seasonal tasks to the address rather than the owner.
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MedTrack: a medication tracker that refuses the cloud
MedTrack is an Android app that tracks medication supplies, warns before you run out, and scans prescription labels on-device.
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Tavi, a memory box that lives in WhatsApp
Tavi stores notes, voice messages, links, photos, documents, contacts, and locations in a WhatsApp chat, then retrieves them when you ask in plain language.
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TIMELINE — Every football goal, in order
A searchable football-goal ledger that organizes goals by player, club, country, competition, and date, with source-linked clips.
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Tom Chinese: Mandarin lessons built around the things you already watch
A Vietnamese-language Chinese-learning platform combining three-layer subtitles, a Chinese–Vietnamese dictionary, spaced repetition, video lessons, and an AI mentor.
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Tri Valley Mars Society
A student-led Bay Area Mars Society chapter designing spacesuits, greenhouses, habitats, and rovers.