Kocaeli Rehber is a local city portal and business directory focused on Kocaeli, Türkiye. It brings together regional news, practical information, business listings and editorial content for residents and visitors. The site covers a broad range of subjects, including economy, health, technology, sports, culture, lifestyle and local events, with news and features about communities across districts such as İzmit, Gebze, Derince and Gölcük.

Its directory helps users explore businesses in sectors including shopping centres, information technology, education, real estate, food, construction, healthcare, automotive, accommodation, cleaning and dining. Visitors can browse company profiles, discover featured “Gold” businesses, and find local services. The portal also offers opportunities to add a business or advertisement and invites writers to publish content, share expertise and build visibility.

Additional resources include classified listings, on-call pharmacy information, recipes and practical guides on topics such as public services and applications. By combining local reporting, business discovery and useful community information, Kocaeli Rehber serves as a digital guide to the region.