Real estate website developer Placester has opened up its system to work with other platforms, released an Internet data exchange (IDX) plug-in that developers can install in their websites, and integrated Placester with customer relationship management (CRM) platforms Follow Up Boss and Contactually. Placester's new application programming interface (API) will allow other developers to use its Web themes. A WordPress IDX plug-in allows agents and developers to customize IDX search on their websites, creating filters that match property description fields used by their multiple listing service. Agents' websites can include search fields that filter homes by home appliances, or distance from popular amenities, for example. Placester, which powers about 1,000 agent sites, has plans ...