The ISM Purchasing and Supply Sourcing Guide, provided by the Institute for Supply Management, enables purchasing and supply sourcing in a wide range of categories including: Consulting Services, Human Capital Management, Procurement, Sourcing, Support Products and Services, Technology Solutions, and Transportation/Distribution/Logistics.

The Spend Matters Almanac is a vendor intelligence guide for all things procurement and supply chain. It is curated by Spend Matters editors and analysts. Some of the categories covered are: Consulting, Sourcing and Supplier Management, Sourcing, eProcurement, Analytics and Market Intelligence, Source-to-Pay, Outsourcing, Procure-to-Pay (P2P), eInvoicing, Supplier [Lifecycle] Management, Supplier Networks and Platforms, Cost Management, Supply Chain, ERP Suites, Data/Content Management, Contract [Lifecycle] Management, Membership Organization, Services Procurement, Training, and Trade Financing. The "50 Providers To Watch" and "50 Providers To Know" are listings of providers that Spend Matters analysts believe are worth considering for procurement projects.