DEVONthink - DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.
PST.NET - Virtual payment cards for online shopping and advertising
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Coinramp - The Coinramp Card lets you spend over 10+ cryptocurrencies like cash, online, in-stores and ATM withdrawals. Available in 100+ countries, no ID needed. Anonymous Crypto Cards
HoudahSpot - Advanced File Search Utility for Mac OS X
EPN.net - Virtual cards for any advertising accounts and personal purchases