This page is a list of blogs which track developments in enterprise search technology and implementation. Many of these blogs are published by search vendors. Others (such as the Real Story Group blog) cover a range of topics including enterprise search. This list was reviewed and revised in February 2015.
Aghy Blog Agnes Molnar
Beyond Search Stephen Arnold
Do More With Search BA Insight
Enterprise Search New Idea Engineering (Archive)
Information Interaction Tony Russell-Rose
Ravn Ravn Systems
The Core Perspective Recommind
Search Chronicles Paul Nelson, Search Technologies
Search Hub Lucid Works
State of Enterprise Search (in English and Dutch)
Unified Information Access Attivio
There is also a very good LinkedIn Enterprise Search Engine Professionals Group.
If you know of other blogs or write one yourself please let us know