To this day a small portion of literature in Glagolitic translation created in the scriptoriums of the Ohrid School and dispersed throughout the world, such as the Evangelarium Assemani (Codex Vaticanus) and the Zograph and the Gospel of Mary and the Sinai Psalter and Prayer Book have been preserved.

The manuscripts from Kliment's language tradition, with their illuminations, vignettes and initials and their linguistic structure undoubtedly originate from the tradition of Cyril and Methodius. A comparison of the philological and stylistic features of the translations into Old Church Slavonic or Old Macedonian with the original texts in Ecclesiastical Greek point to the fact that the first translator or translators, being very well acquainted with the culture of speech, formed a distinct literary type, and a language with its own phraseology, syntax and patterns. In some of the gospels, for instance, the stylistic and rhythmical qualities of the translation are more effective than those of the original Greek text. The precise expression of the mystical tripartite Christian creative principle (the Holy Trinity), as well as the impeccable literary organization, especially in the manuscripts of the Assemani and Zograph Gospel, show their author as a unifier of the crowning achievements of linguistic values.

The Zograph Four Gospels, named after the Mt. Athos monastery to which it belonged - written on 303 parchment sheets - is the most substantial manuscript in the Glagolitic alphabet. Ever since 1736 when Joseph Assemani, an orientalist and librarian, took the Ohrid manuscript - aprakos (or gospel selections), with its 158 parchment sheets, from Jerusalem to the Vatican Library, the document has carried the name of its discoverer.

The manuscript includes at the end the oldest Slavonic calendar; these saints' days are recorded for the first time: Cyril (14th February), Methodius (6th April), Kliment (27th July), Erasmus of Ohrid (2nd June) and the Fifteen Martyrs of Strumica (29th August). As for the Gospel of Mary it was first found on Mt. Athos and the 137 psalms of the Psalter and the oldest Slavonic Prayer Book (Euchologion) were found in the ancient Monastery St. Catherine on Mt. Sinai.

Slavonic philologists are unanimous as far as the dating and the origin of these texts are concerned: the manuscripts are morphologically and lexically closely related, composed in Ohrid either at the end of the 10th or the beginning of the 11th century and based on models dating from Kliment's time. Recent scholarly discoveries have also added fourteen of the presumed five hundred pages of the Codex retrieved from the library of Count Cloz (Glagolita Clozianus) to the Ohrid Glagolitic collection. Only four fragments from the Lenten Triodion, those for Passion Week, have survived from Cloz's collection of sermons of praise.
 
The most interesting of these four is the second sermon, the Anonymous Homily, which has been proved to be a transcript of an original work by Methodius. This is supported by the similar, and sometimes even identical, terminology used in the Homily and the Zakon Sudni (Law of Judgement), the first Slavonic legal code, the backbone of Methodius's Nomocanon.

Time has preserved a small number of Glagolitic epigraphic monuments. On the southern pillar in the narthex of St. Nahum's Monastery, the only Glagolitic in the four graffiti written one above the other is the signature "Nikula pop" (Nikula the Priest). On the Krupiste site, in the Bregalnica region, letters and drawings engraved in unglazed clay and fired brick have been discovered. The tiles, all thirty-four of them, were obviously incorporated into the slavonicised churches without a discernible significance. The letters, which originate from different cultures, also include Glagolitic ones.