Lorenzo Scupoli.
Author of “Spiritual Combat,” ISBN:978-1-928832-50-8
Fr Scupoli was a Theatine priest, an order founded by Bishop Giampietro Caraffa, who was later Pope Paul IV. A long quote by Fr Scupoli is on the home page.
Granted, the site has an Eastern Orthodox taste, but the teachings are based on sound doctrine from an anti-defamation order, and those of a priest who became Pope.
Is there a Latin rite imprimatur? No. But having read Fr Scupoli’s book, the teachings upon which the site is based, I dont think its anywhere out of line with our Church Teaching.
If anyone can quote any teaching on the site that disagrees with magisterial Teaching, I’ll recant having said it was a good site and apologize for recommending it.