Pennywise
Helium
PiP for Mac
Jigsaw
PiPer
PiP-Tool
Picture In Picture
PiPifier
TaxJar
Avalara
Thomson Reuters ONESOURCE
Vertex Cloud
Vertex O Series
Taxamo
Octobat
Quaderno.io
Pennywise TaxJarTaxJar 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
Might want to check out taxjar.com, I haven't used it but one thing they claim to do is help with this compliance. Source: almost 2 years ago
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
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.
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.