Based on our record, library.io should be more popular than Pennywise. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Afloat - Don't know if it will work for macOS 12. If it's just for safari alone, you can try Pennywise. Source: about 2 years ago
I'm trying to make my first pcb with a SATA connector. I have tried searching library.io for these connectors but can't find anything. Source: about 2 years ago
More complicated but more capable: https://library.io/. Source: almost 3 years ago
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Circuito.io - Instant code and wiring for your project
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
InstaPart - Build circuit boards faster with parts delivered in <24 hrs
PiPer - A DIY Minecraft computer to build gadgets
B4R - Development tool for native Arduino programs.