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Active Wall is a professional gateway filter. It is internet surf control soft.

HAX264 is a DirectShow Video Transform Filter for decoding H264(AVC) video.

DNS Redirector - Internet Access Filter, Splash Page Manager.

Spam filter for Windows Live Mail.

HLDFilter is a unix based mail filter written in perl to replace procmail

The most up to date DirectShow filter to read Matroska files.

Screen, Scan & Filter Stocks, covers worldwide, Technical Analysis, Candlest

A powerful multi-tabbed browser with recoverable Popup Blocker and Ads Filter.

XWall is a spam filter for Exchange and other SMTP servers.

View a code sample of a custom XML Filter.