The OmniOMR project aims to apply Optical Music Recognition (OMR) technologies within a digital library environment. The project aims to provide full-text search functionality in musical documents in diverse library collections, covering primarily Common Western Music Notation, but (white) mensural and diastematic chant notations as well, both printed and handwritten. To facilitate the exploration of various musical works, the web application Makarius has been developed, serving as the gateway for searching and navigating the recognition results.