Mark Bennett at New Idea Engineering – Where have all the filters gone?:
"Through various mergers and acquisitions, the three main vendors for commercial document filters are now owned by companies who are already selling their own search products.
[…] The 3 top commercial filters being used now are:
- Stellent [Outside In Technology] – Now part of Oracle, who now sells "search"
- KeyView – Now part of Autonomy, a Tier-1 search vendor
- Microsoft IFilter Framework (part of some Microsoft products) – Microsoft is also pushing their own search technology."
The IBM WebSphere Portal Document Conversion Services are building on Oracle Outside In Technology.