PostGIS - Open source spatial database
QGIS - QGIS is a desktop geographic information system, or GIS.
SpatiaLite - SpatiaLite is a spatial extension to SQLite, providing vector geodatabase functionality.
ArcGIS - ArcGIS software is a data analysis, cloud-based mapping platform that allows users to customize maps and see real-time data ranging from logistics support to overall mapping analysis.
BatchGEO - Make maps from a list of multiple addresses, create a mobile optimized map or locator.
EasyMapMaker - Map multiple locations from Excel (xls) spreadsheet data on a custom google map. Create free customized Google maps. View maps on Mobile, Tablet, and Computers. Easily create a map in seconds.