GeoKettle is a powerful, metadata-driven spatial ETL (Extract, Transform and Load) tool dedicated to the integration of different data sources for building and updating geospatial databases, data warehouses and services.
AppForMap is a collection of PHP modules for web mapping. The project comprises both clients and server for dealing with simple features, GML, WKT, WMS, WFS, PostGIS databases etc. It can also act as a backend for an OpenLayers frontend.
Integrate large databases of points with Google Maps without overloading db or client browser. Server-side example in simple PHP with server & client side caching, easily portable. Data loaded in chunks and when zoomed an area overview is shown. Simple D