rwhois_ng - RWhois Next Generation
What is rwhois_ng?
rwhois_ng is an open source implementation of rwhois V1.5 (RFC 2167) that utilizes your existing IP Management solutions database as a source of information. rwhois_ng internally utilizes libdbi, which allows it to support several database vendors, including MySQL, PostGRES and Oracle. A full list of libdbi drivers is available at thier site.
 
Flexable, High Performance rwhoisd Alternative
rwhois_ng is a flexable, high performance alternative to rwhoisd. Since rwhois_ng utilizes a relational database for storage, it can be configured to pull information from an existing database containing your IP assignment information.