Xiphos - Xiphos (formerly known as GnomeSword) is a Bible study tool written for Linux, UNIX, and Windows...
JW Library - Study the Bible in English, Koine Greek, and over a hundred other languages.
Eloquent - Eloquent is a free & open-source application for research and study of God and His Word.
Bible Explorer - Bible Explorer is the fastest and easiest to use free bible study software.
The SWORD Project - The SWORD Project is the CrossWire Bible Societys free Bible software project.
BibleTime - BibleTime is a completely free Bible study program.