GeoServer is an open source server for sharing geospatial data.
Designed for interoperability, it publishes data from any major spatial data source using open standards

ArcGIS for Server improves the way your business works by bringing the power of GIS into the hands of everyone in your organization, enabling better decision making.

MapServer is an Open Source platform for publishing spatial data and interactive mapping applications to the web. Originally developed in the mid-1990’s at the University of Minnesota, MapServer is released under an MIT-style license, and runs on all major platforms (Windows, Linux, Mac OS X). MapServer is not a full-featured GIS system, nor does it aspire to be.

We have a extensive experience management spatial databases:

PostgreSQL/PostGIS

SQL Server

ORACLE

MySQL

Node.js is an open-source, cross-platform runtime environment for developing server-side web applications. Node.js applications are written in JavaScript and can be run within the Node.js runtime. Node.js provides an event-driven architecture and a non-blocking I/O API designed to optimize an application's throughput and scalability for real-time web applications. It uses Google V8 JavaScript engine to execute code, and a large percentage of the basic modules are written in JavaScript. Node.js contains a built-in library to allow applications to act as a web server without software such as Apache HTTP Server, Nginx or IIS.