THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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- The Razor database (http://razor.sourceforge.net) Vipul Ved Prakash and Jordan Ritter allow Unix clients to work out of the same database used by the commercial customers of the Cloudmark system.
- Pyzor, a completely free database and software system, written by Frank Tobin. http://pyzor.sourceforge.net
- DCC, the Distributed Checksum Clearinghouse. http://www.rhyolite.com/anti-spam/dcc/
DnsBlocklists can be queried via the network, so these are network tests too – but they get their own page.