Maps

Carto DB CartoDB is an open-source library which can be used to create dynamic maps. You can directly query your PostGIS database and design your own maps.
TileMill TileMill is an application for making beautiful maps. Whether you're a journalist, web designer, researcher, or seasoned cartographer, TileMill is the design studio you need to create compelling, interactive maps.
Leaflet Leaflet is a modern, lightweight open-source JavaScript library for mobile-friendly interactive maps. It is developed by CloudMade to form the core of its next generation JavaScript API. Weighing just about 22kb of gzipped JS code, it still has all the features most developers ever need for online maps, while providing a fast, pleasant user experience.
Geoserver GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Designed for interoperability, it publishes data from any major spatial data source using open standards.

Being a community-driven project, GeoServer is developed, tested, and supported by a diverse group of individuals and organizations from around the world.

GeoServer is the reference implementation of the Open Geospatial Consortium (OGC) Web Feature Service (WFS) and Web Coverage Service (WCS) standards, as well as a high performance certified compliant Web Map Service (WMS). GeoServer forms a core component of the Geospatial Web.
OpenLayers OpenLayers makes it easy to put a dynamic map in any web page. It can display map tiles and markers loaded from any source. OpenLayers has been developed to further the use of geographic information of all kinds. OpenLayers is completely free, Open Source JavaScript, released under the 2-clause BSD License (also known as the FreeBSD).
Mapbender Mapbender is the back office software and client framework for spatial data infrastructures. The software is implemented in PHP, JavaScript and XML and dual licensed under GNU GPL and Simplified BSD license. It provides a data model and web based interfaces for displaying, navigating and querying OGC compliant map services.
OpenDS OpenDS is a driving simulator for research. The software is programmed entirely in Java and is based on the JMonkeyEngine framework, a scene graph based game engine which is mainly used for rendering and physics computation.