Free Tools for Creators and Shops
Many tasks require specific tools, and finding reliable, free options can be a challenge. QuackBuilds offers a suite of free browser apps designed to help with various needs, from publishing to manufacturing. All apps are free to use, require no signup, and process everything directly in your browser.
KDP Cover Wrap Builder
The KDP Cover Wrap Builder is a free generator for paperback and hardcover book covers. You can upload your front and back cover images, select the trim size, paper type, and page count. It exports a print-ready full-bleed cover wrap PDF, with the spine sized to KDP's exact formula. A live dieline preview includes trim, spine-fold, and barcode keep-clear guides. No signup is needed, and all processing happens in your browser.
Open KDP Cover Wrap Builder — freeAlso free: OEE Pulse
OEE Pulse is a free shop-floor OEE dashboard for small machine shops. It tracks Availability × Performance × Quality per machine, shows plant-wide OEE at a glance, logs every shift for trend analysis, and exports shift reports.
Open OEE Pulse — freeAlso free: Extinguisher Log
Extinguisher Log is a free fire extinguisher monthly inspection log. Add your extinguishers once, then run the NFPA 10 six-point visual check (in place, gauge, fullness, condition, seal, label) every 30 days to see the whole year's records.
Open Extinguisher Log — freeAlso free: BotWarden
BotWarden is a live dashboard for Polymarket trading bots. It monitors every trade, tracks P&L and equity curves in real time with a 10-second refresh, and provides analytics like win rate, Sharpe ratio, and drawdown.
Open BotWarden — freeEvery app here is built and maintained by QuackBuilds, runs in your browser, and is free with no account. See them all at quackbuilds.com/apps.