This is a small but notable section of the Compendium, recording services that operate at the intersection of documentation and identity. Entries include document retrieval agents, apostille services, and identity verification platforms. The scope is intentionally narrow: only services with a clear documentary function are listed here. Readers should be aware that document services operate under distinct legal frameworks in different countries, and the suitability of any listed service depends heavily on jurisdiction. The Compendium records these entries as a reference index; it does not verify compliance with any particular national regulation. Each entry was confirmed as an active web presence at the time of inclusion.