ReOS is an open source web based real estate listing portal management application.

Description:
Easy installation and configuration
Manage sales, rentals and holiday rentals or set up your own
Ability to define property types (Flat, Appartment, House, etc...)
Customers database
Multi-user / Sales agent
Each sales agent handles his property and customer data
Search by many criterias
Publish multilingual adverts auttomaticaly
Unlimited images by property
ReOS automatically creates image thumbnail for you
Upload multiple images at once to listings
Publish news and events with WYSIYG Editor
Contact form with automatic answer
Recommended properties section
Special offer section
Latest properties section
"Want to sell" section
"About us" section
Mortatge calculation
Mailing list to send newsletters
Holiday Rentals
Booking Management
Price management by seasons (High, Medium, low,...)
Calendar Availability
Search by Availability
Set up of Equipment, Area activities, Avalaible services and other comments.
And all features of a property
Maps
Google Map location
Front page map view
Customers
Registration
Private Area
Manage properties and pictures
Contacts
Help Desk/Ticketing
Email Registration
Customer association 
Response Management

Demo: