Encryption

Black Hole
Irradiated(Free)
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Does Black Hole for Mac Really Work?
LockMeBaby
Soramimi-works(Free)
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LockMeBaby: Protect your files and directories
Rohos Logon Key
Rohos(Trial version)
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Block access to your Mac with Rohos Logon Key
SecureCRT
Vandyke(Trial version)
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SecureCRT: Terminal Emulation Security Experts
Crypt3
steve dekorte(Free)
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Crypt3: Keep Your Files And Life Safe From Prying Eyes
SecuritySpy
Ben Software(Trial version)
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Video surveillance with your webcam
Hidden
Hidden(Paid)
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Discreet utility to find your stolen Mac
Knox
1passwd(Trial version)
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Knox: Secure encryption and backup
PGP Desktop
Pgp(Trial version)
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Secured Communication With PGP Desktop
TimeMachineEditor
Time Software(Free)
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Change the backup interval in Time Machine