USGS
Yes, both Equator and vMAP offer a Free Trial.
Equator is designed for Large Enterprises, Medium Business and Small Business.
vMAP is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Equator begins at $30/User/Month, while pricing details for vMAP are unavailable.
Some top alternatives to Equator includes eSpatial, ArcGIS Online, Map Business Online, vMAP, 21stCenturyGIS, 3-GIS, Agile GIS, ArcGIS Instant Apps and Geoconcept GIS.
Some top alternatives to vMAP includes eSpatial, ArcGIS Online, Map Business Online, MyGov, 21stCenturyGIS, 3-GIS, Urban SDK, Agile GIS and Geoconcept GIS.