I have found MacSword to be a good basic Bible program.
It is the Mac branch of the
Sword Project. This is an open source project that builds a cross-platform Bible program back end to access the text files. The various implementations extend this by adding the front end that present the text to the user. This approach makes many versions available. They have even obtained OK's from some of the copyright holders to include versions (such as the ESV) at no charge that have fees on other Bible programs.