The Arabic Heritage Languages Community preserves materials relating to Arabic as spoken and used by Kenyan Arab and Arab-descended communities, principally on the Swahili coast. Arab traders and settlers have been present on the East African coast for at least two thousand years, and their linguistic heritage is inseparable from the development of Kiswahili — around 40% of whose vocabulary derives from Arabic loanwords — and the classical literary traditions of Swahili poetry, which drew heavily on Arabic metres and script. The principal communities are the Hadrami (Yemeni) community of Mombasa and the Omani Arab community associated with the Sultanate of Oman's coastal dominance from 1698 onwards. Most Kenyan Arabs today speak Swahili as their primary language; Arabic is maintained primarily as a heritage and liturgical language within these communities rather than as a widely spoken everyday vernacular. Classical Arabic also functions as the liturgical and scholarly register across Kenya's Muslim communities broadly.