FSI開放式英語學習網是美國 Foreign Service Institute為了foster the learning of worldwide languages而開放的non-profit學習資源，網頁上有各種主流語言的學習教程，每個語種分不同級別，配有一本PDF和配套音訊，全部免費下載。
FSI-Language-Courses開放式英語教程的主導思想是不斷地重複重複再重複，直到your response becomes automatic!該網站上的所有課程都是有美國政府開發的，並應用於公共領域，通過電子文件的方式來免費使用，該組織是一個非營利性質的平臺，以促進世界各地語言的交流和學習。
These courses were developed by the United States government and are in the public domain.
This site is dedicated to making these language courses freely available in an electronic format. This site is not affiliated in any way with any government entity; it is an independent, non-profit effort to foster the learning of worldwide languages. Courses here are made available through the private efforts of individuals who are donating their time and resources to provide quality materials for language learning.