The Composite Psalter is a truly “composite” rendering of the Psalms as they are translated in the versions below (listed in no order):
1928 BCP
1979 BCP
ESV
NIV
NIV 1984
NASB
NKJV
KJV
NRSV
RSV
ASV
The Amplified Bible
JPS Old Testament
Third Millennium
The Webster Bible
Douay-Rheims
Common English Bible
God’s Word Translation
New Jerusalem Bible
World English Bible
Eastern Orthodox Bible
Furthermore, we also use the parallel tools at BlueLetterBible.org and at bible.cc