From wiki:

An open house (or “rumah terbuka”) is a Malaysian concept whereby people celebrating various holidays will invite friends to drop by for festive snacks and fellowship.

Eid ul-Fitr (Hari Raya Aidilfitri):

Eid ul-Fitr or Id-ul-Fitr (Arabic: عيد الفطر ‘Īdu l-Fiṭr‎), often abbreviated to Eid, is a Muslim holiday that marks the end of Ramadan, the Islamic holy month of fasting. Eid is an Arabic word meaning “festivity”, while Fiṭr means “to break the fast” (and can also mean “nature”, from the word “fitrah”); and so the holiday symbolizes the breaking of the fasting period. It is celebrated starting on the first day of the Islamic month of Shawwal.

To fellow families, friends, relatives, colleagues, ex-colleagues, neighbors, bloggers, etc, and basically everybody who dropped by on Saturday, thanks a million!
Pics courtesy of azlan.anilezfa.com