Triodion Caps, by Vladislav V. Dorosh of Calmius Software, is a free Cyrillic ecclesiastical caps font with the solemn, ornamental air of church lettering. The caps pair broad, rounded bodies with crossbars, dots, and small crown-like accents, so the font feels ceremonial rather than merely antique.
It suits liturgical book covers, Orthodox festival posters, museum graphics, historical title cards, and monograms where a free font needs a distinctly sacral tone. Because the letters carry their decoration high and close to the main forms, it also works well for short headings and initials that need to suggest manuscript tradition without turning into full-blown illustration.