Derivative Calculator That Shows Its Work
A browser-based calculator differentiates typed functions, displays each rule in sequence, simplifies the result, and plots the original and derivative curves.
Across every issue
Search
Titles, domains, summaries, categories, signals, dates, and editorial-interest scores across the entire published catalogue.
Results
96,600 catalogue cards
-
16561
-
16562
Desk Dangle, a Lucky Charm for Your Desktop
A free Windows app that lets users hang animated charms, pets, memes, or custom images from the top of their screen.
-
16563
DevLifeCheck: a support calendar for the devices you depend on
DevLifeCheck tracks security-support dates, recalls, repairability, and regional lifecycle details for phones, tablets, and routers.
-
16564
DoBatch, the Cricut queue manager for TikTok orders
DoBatch turns personalized TikTok Shop orders into nested, cut-ready SVG files for Cricut production.
-
16565
どこだ？パパ：病院を探検する絵本
Three fathers who have experienced cancer treatment created a search-and-find picture book that helps children understand hospitals, medical equipment, and the people who work there.
-
16566
draf.ing, the P&ID editor
A browser-based editor for process and instrumentation diagrams that applies ANSI/ISA-5.1-2022 while you place symbols and connect lines.
-
16567
DrawHousePlan: a browser-based floor-plan tool with exact dimensions
DrawHousePlan lets users draw residential plans in feet and inches, inspect the building in 3D, and export a dimensioned drawing set.
-
16568
DriveTest Canada builds practice around the test on the desk
A free Canadian driving-test practice site with province-specific simulations, 1,148 questions, road signs, study guides, and centre-by-centre pass-rate data.
-
16569
L’Éclaireur des Bassins, a civic journal between the locks
A Lille-area civic journal tracking waterways, intercommunal politics, transport, public services, culture, and the working details between them.
-
16570
Economic Twin: an explorable model of the U.S. economy
A private-beta economic simulation that maps businesses, synthetic residents, geography, source data, modeled estimates, and AI-assisted analysis onto one explorable globe.
-
16571
Emebala, the Offline Translation Desk
A Team Sunplaza project offering Windows chat translation and a desktop bilingual reader that run locally on the user’s device.
-
16572
Emebala, a Private Translation Desk for Books and Chats
Team Sunplaza presents offline Windows translation tools for live conversations, ebooks, PDFs, and scanned manuscripts.
-
16573
Endo Lottery turns NHS waiting lists into a postcode-level choice
Enter a postcode to compare nearby English hospitals, endometriosis specialist centres, and local GP prescribing data.
-
16574
Misión en Casa turns your home into a children's escape room
A customizable, printable escape-room adventure for children aged 6 to 12, built around the hiding places, names, and pets in their own home.
-
16575
ExhibitSet Turns a Folder of Legal Documents into a Filing-Ready Exhibit Set
A browser-based tool that makes scans searchable, applies verified redactions and Bates numbers, builds indexes and bookmarks, checks filing requirements, and exports a production ZIP.
-
16576
Facthouse, a local memory engine for AI tools
An open-source-style local memory system that turns conversations and tool activity into structured facts, entity graphs, and searchable knowledge.
-
16577
Fieldnotes Archive and the 898-versus-869 problem
A compact technical archive of agent-evaluation discrepancies, parser fixtures, network-boundary notes, and reproducibility artifacts.
-
16578
Flappy Jay, the Eight-Bird Bullet Hell
A sideways flappy bullet-hell RPG with solo play and peer-to-peer co-op for up to eight birds.
-
16579
Forecast Britain — weather models as instruments
An interactive explorer for the UK Met Office’s UKV, Global, and wave models across Britain, Ireland, and the wider world.
-
16580
FORM: The Improvement Layer for Prediction-Market Agents
A workspace for AI agents that research prediction markets, test prices, record forecasts, and learn from settled outcomes.
-
16581
FormFold turns one intake into a stack of completed PDFs
A browser-based PDF form filler that matches repeated questions across up to five digital forms, then returns the completed files as a ZIP.
-
16582
FrameWyrm Separates the Media Pipeline from the Machines
An open-core Rust system that scans media libraries, routes files through visible processing flows, and dispatches encoding work to local or temporary cloud workers.
-
16583
Frooqie maps AI-built software as a product
A read-only tool that turns an AI-built codebase into a human-readable map of features, roles, workflows, rules, and unresolved product gaps.
-
16584
The Skydiving Canopy That Wants Your Logo
fundmy.fun auctions advertising positions on a planned skydiving canopy, with a private logo preview and an interactive 3D placement tool.