I have been a long time user of e-Sword (alongside BibleWorks and now also Logos, for which there is also a free version available) and cannot recommend it highly enough. It is a free Bible study software program that rivals many that you would have to pay for and is better than most. This program also makes basic word studies a breeze and has been of great use to those in my congregation to whom I have recommended it. In fact, they often tell me that they love the layout and how user-friendly the program is. There is not a very steep learning curve with this program, so most anyone can catch on to it fairly quickly. The most recent update is version 13.0.0, and here is a description of the most recent updates:
New Audio Bibles feature! Listen to the Bible being read to you in dramatic fashion. Play/Pause button is on the Bible view’s toolbar. Audio is available for KJV, KJV-BRG, ESV, CEV, WEB, NRSV and Spanish PDT Bibles.
All audio Bibles are generously provided by Bible.is, a ministry of Faith Comes By Hearing.
For those interested, here is a history of updates going back to version 5.