I'm looking for open source alternatives to ArcCatalog. The software should run on both Win and Linux and support the usual file formats (shp, kml, gml, ...) and databases (especially PostGIS, additional SpatiaLite support would be great). I'd like to browse and search for datasets and probably rename (renaming all parts of a shapefile at once) and delete files.
For a basic viewer, I've been playing with WxGIS Catalog, which does the basics nicely but could use some fleshing out for more complex use cases. There's also RasterCatalog for QGIS, but as the name states, its only for rasters. On OS X, try GISlook, but none of these look to handle the spatial database engines directly.
GeoApt Data Browser looks quite promising, but I haven't yet managed to make it run on Windows. The big advantage over wxGIS Catalog for me would be that you can access the dataset's metadata.
Update: As @dassouki mentioned above, there is also a new QGIS Browser which supports raster, vector and WMSS data. You can drag and drop layers to QGIS from there.
Udig may have what you are looking for. Runs on Windows, Linux, and mac. Supports all the standard data formats, and able to browse/rename datasets.
QGIS browser works well: http://www.qgis.org/en/docs/user_manual/qgis_browser/qgis_browser.html
Not sure if you've check that out since this post was made...
supports .shp and postgis
Has and API and supports Add-ons for extra tools (for .kml, spatiaLite etc)
It's NOT a GIS but a Interactive Geographic Data Viewer.
"Thuban is extensible and multi-platform (GNU/Linux, Windows, ...). It is Free Software under the GNU General Public License (GNU GPL)"