I am working on a commentary on the Psalms. I have decided to compile some helpful links that I discovered during my research. It includes a mix of exegetical and sermonic links. Here is what I have for Psalm 109 (in no particular order). Feel free to mention any that you find helpful in the comments section.
Ray Stedman., “When You Are Falsely Accused,” Psalm 109: https://www.raystedman.org/old-testament/psalms/when-you-are-falsely-accused
Analysis by C. J. Labuschagne: https://www.labuschagne.nl/ps109.pdf
William Barrick’s notes: https://drbarrick.org/files/studynotes/Psalms/Ps_109.pdf
Psalm 109 devotional: https://www.generations.org/devotionals/173