The first-century Greek merchant's guide to the Red Sea and Indian Ocean trade — read two ways: as text against the manuscript, and as a voyage followed port by port. 《厄立特里亚海航行记》：公元一世纪希腊商人的红海与印度洋贸易指南，文本对校与航程逐港两种读法。
The interactive comparison reader — the Greek text alongside the manuscript witness. 文本与抄本对照
The itinerary reader: follow the Periplus port by port down the coasts of the Erythraean Sea. 航程读本 · 逐港
Align the Greek source with its translations and see where translators diverge — Müller · Schoff · Casson. 译本对照 · 译者分歧