TestFairy might be a bit more popular than Pennywise. We know about 1 link to it since March 2021 and only 1 link to Pennywise. 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: over 2 years ago
Https://testfairy.com is also an alternative solution. You can have users and groups to share the apk. Source: almost 2 years ago
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
TestFlight - iOS beta testing on the fly.
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
TestApp.io - A platform that helps both mobile app developers and owners to easily share their apps with everyone to get feedback before reaching publicly to Google and App stores.
Jigsaw - Welcome to a dynamic community with connections to millions of B2B decision makers. It's the fastest way to reach the right people, and never waste time hunting down the wrong person again.
Visual Studio App Center - Continuous everything – build, test, deploy, engage, repeat