He was an influence on Thomas Aquinas. A text search shows that he is quoted or mentioned 21 times in the Summa Theologica, under the name Rabbi Moses. This is less than I thought it would be.

Hegel adored book I chapter 73 proposition 6 of the guide to the perplexed. It's Maimonides citing the assumptions of a radically determinist muslim sect: even what think and what you write on parchment is done by God.

For Hegel it wasn't the God but the «World Spirit».

For Marx it's not the «world spirit» but the «relations of production».

Both are kinda popular. Hegel picked up Maimonides first as a student of theology.