The alphabet consists of thirty upper and lower case letters:
Gaj's original alphabet contained the digraph ⟨dj⟩, which Serbian linguist Đuro Daničić later replaced with the letter ⟨đ⟩.
The letters do not have

 ...

Note that the digraphs dž, lj, and nj are considered to be single letters:
• In dictionaries, njegov comes after novine, in a separate ⟨nj⟩ section after the end of the ⟨n⟩ section; bolje

 ...

The Serbo-Croatian Latin alphabet was mostly designed by Ljudevit Gaj, who modelled it after Czech (č, ž, š) and Polish(ć), and invented ⟨lj⟩, ⟨nj⟩ and ⟨dž⟩, according to similar

 ...

In the 1990s, there was a general confusion about the proper character encoding to use to write text in Latin Croatian on computers.

 ...

Romanization of Macedonianis done according to Gaj's Latin alphabet but is slightly modified. Gaj's ć and đ are not used at all, with ḱ and ǵ introduced instead. The rest of the letters of the alphabet are used to represent the equivalent Cyrillic letters.

 ...

• Glagolitic alphabet
• Montenegrin alphabet
• Serbian Cyrillic alphabet
• Slovene alphabet
• Yugoslav braille

 ...

Since the early 1840s, Gaj's alphabet was increasingly used for Slovene. In the beginning, it was most commonly used by Slovene authors who treated Slovene as a variant of Serbo-Croatian

 ...