Apps similar to Grace Bible Software include e-Sword. It's paid, but Xiphos and The SWORD Project are free. In total there are three Bible Study Tools like Grace Bible Software for Windows, Linux, iPhone, iPad and Mac.
Free app with extensive Bible study features, including multiple versions, simple search with Strong's numbers, and an editor for sermons and notes, enhancing user experience significantly.
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Xiphos (formerly known as GnomeSword) is a Bible study tool written for Linux, UNIX, and Windows under the GNOME toolkit, offering a rich and featureful environment for reading, study, and research using modules from The SWORD Project and elsewhere.
The SWORD Project is the CrossWire Bible Societys free Bible software project. Its purpose is to create cross-platform open-source tools-- covered by the GNU General Public License-- that allow programmers and Bible societies to write new Bible software more quickly and easily.
