There are a number of very good commentaries on Joshua, though I am not sure which one I would recommend as the best of the lot. Butler‘s work is the most detailed analysis of the book from a broadly evangelical perspective, while Nelson is the top critical work (Boling and Soggins are also good critical commentaries, though both are dated). On a more popular front, Hamlin‘s third-world perspective is challenging, while Creach offers a good overall interpretation. More conservative readers will appreciate Harris, Hawk, and especially Howard.

• Boling, Robert G and G. Ernest Wright. Joshua: A New Translation
  with Notes and Commentary.
  Anchor Bible. Doubleday, 1982.
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• Butler, Trent C. Joshua.
  Word Biblical Commentary. Word, 1983.
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• Creach, Jerome F. D. Joshua.
  Interpretation. John Knox, 2003.
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• Gray, John. Joshua, Judges, Ruth.
  New Century Bible. Eerdmans, 1986.
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• Hamlin, E. John. Inheriting the Land: A Commentary on
  the Book of Joshua.
  International Theological Commentary. Eerdmans, 1983.
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• Harris, J. Gordon, Cheryl Anne Brown, and Michael S. Moore.
  Joshua, Judges, Ruth.
  New International Biblical Commentary: Old Testament. Hendrickson, 2000.
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• Hawk, Daniel. Joshua.
  The NIV Application Commentary. Zondervan, 2005.
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• Hess, Richard S. Joshua: An Introduction and Commentary.
  Tyndale Old Testament Commentaries. InterVarsity, 1996.
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• Howard, David M. Joshua.
  The New American Commentary. Broadman & Holman, 1998.
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• Huffman, John A. Joshua.
  Mastering the Old Testament. Word, 1986.
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• Nelson, Richard D. Joshua: A Commentary.
  Old Testament Library. WJK, 1997.
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• Pressler, Carolyn. Joshua, Judges, and Ruth.
  Westminster Bible Companion. WJK, 2002.
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• Soggin, J. Alberto. Joshua: A Commentary.
  Old Testament Library. Westminster Press, 1972.
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• Woudstra, Marten H. The Book of Joshua.
  New International Commentary on the Old Testament. Eerdmans, 1981.
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