Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Pennywise - Cross-platform application to open any website or media in a floating window
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
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.
PiPer - A DIY Minecraft computer to build gadgets