XTools Pro, Inc.
Enhance the features of ArcGIS and ArcMap with more than 90 tools and functions.
The ArcPhoto Tools are a set of geoprocessing tools and ArcMap user interface.
A sample extension that presents a new toolbar to ArcMap users.
The CSW Clients bring Geoportal discovery functionality into your ArcMap, etc.
NCI GIS Tools
ColorTool is a plugin for ArcMap™ (part of the ESRI ArcGIS Desktop suite).
Eagle Information Mapping, Inc
Is an ESRI ArcMap™ Extension that performs pipeline centerline edits.
ArcMap Extension for connectinng to PostGIS (PostgreSQL) spatial database.
Fugro Pelagos, Inc.
An export filter for ArcMap that gives the you the ability to convert DXF files.
With it, ArcMap can work directly with SQL Server 2008 / R2 spatial database.
This app can increase the editing productivity in ArcMap.