The term “ER Viewer” most commonly refers to ERDAS ER Viewer, a free geospatial image utility developed by ERDAS (Hexagon Geospatial). However, depending on your field of work, you might also be looking for ER/Studio Viewer, a database design tool. 1. ERDAS ER Viewer (GIS & Remote Sensing)
ERDAS ER Viewer is a free desktop software tool used to open, view, and navigate large raster Geographic Information System (GIS) and satellite images. It was originally created as part of the ER Mapper product suite.
Massive File Handling: It uses a progressive scan process to easily zoom and move through massive image files without dropping performance.
Key Formats: It natively reads heavily compressed formats like ECW (Enhanced Compression Wavelet) and JPEG 2000, alongside standard types like TIFF, GeoTIFF, BMP, and PNG.
Internet Streaming: It supports the ECWP application protocol (ecwp://), allowing you to stream and display geospatial imagery directly from web servers.
Office Integration: It includes a Microsoft Office plugin, which allows users to embed links to massive geospatial images directly inside Word or Excel documents without slowing down the files. 2. IDERA ER/Studio Viewer (Database Design)
If you are working with database architecture, you are likely looking for the IDERA ER/Studio Viewer. This tool is built for team members who need to read Entity-Relationship Diagrams (ERDs) without needing a paid database modeling license. ER/Studio Viewer 20.0.x – Embarcadero DocWiki
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