| Cairo | Cairo Graphics |
| Cairo_bigarray | image backend, via Bigarray |
| Cairo_png | PNG reading/writing functions |
| Cairo_pdf | PDF backend |
| Cairo_ps | PostScript backend |
| Cairo_ft | Minimal support for the Fontconfig/Freetype font interface |
| Cairo_lablgtk | GTK/Cairo integration |
| Pango_cairo | Cairo rendering backend for Pango. |