SpatialKit
From Wildsong
Commentary
http://www.inigis.org/402/pgmap-arcgis-extension-for-connecting-to-postgis-without-arcsde.html/
Download site http://st-links.com/Download.aspx
Requirements
- ArcGIS 10
- PostGIS 1.5
- PostgreSQL 8 or 9 (I am testing with 9)
- .Net Framework 3.5
(There is also an old version for 9.3 + PostGIS 1.0.1, meh.)
(There is also a SQL Server version)