Liturgy of the Hours: Officia propria online
Collection of links to Liturgy of the Hours propers / supplements of dioceses and religious institutes available online.
Czech Republic [LA] https://kpmk.eu/kpmkeu/index.php/liturgie/liturgicke-texty/147-texty-narodniho-propria-latinsky
Germany
Italy
Spain
A large collection of Italian proper texts: https://propriodeisanti.jimdofree.com/
Franciscans OFM, Custodia Terrae Sanctae [LA, IT] https://www.custodia.org/en/guard-holy-places
Franciscans OFM , Provincia Serafica, special proper texts for the Porciuncula [IT] https://www.porziuncola.org/liturgia-delle-ore.html
Benedictine oblates of the St. Benedict Monastery, Bergamo [IT] https://www.monasterosanbenedettobergamo.com/liturgia-delle-ore/
Pontificio Seminario Regionale Flaminio Benedetto XV – Bologna https://www.seminarioflaminio.it/centenario/liturgia-delle-ore-del-psrf/ (the texts are currently unavailable, but hopefully they will re-surface one day)
Servites OSM: Bl. María Guadalupe Ricart Olmos, virgin and martyr https://www.madreguadalupe.com/pt-pt/fiesta-liturgica/
Fundação de Francisco e Jacinta Marto [IT] https://pastorinhos.com/it/fondazione/preghiere/liturgia-delle-ore# (what is this? A foundation? Are the liturgical texts its proper, or rather taken from the proper of a country or region? Or are they an unofficial proposal? …)