aspEasyCrypt  

ASP component for use with the IIS Server from Microsoft, the main feature is that it can hash, cipher and perform checksums on strings and on files. It supports 22 types of hash, 5 checksums and 37 different ciphers. With this component you can make strong security pages, sign page or messages, make the programs exchange keys, making public and private keys, you have all the standards to cipher and hash it.

Hosting Requirements: Windows NT/2000/XP
Price: Free/$20

   Chilkat S/MIME  

Chilkat S/MIME allows you to easily create and manipulate MIME and S/MIME messages from within your applications.

Hosting Requirements: Windows
Price: $149

   MailBee SSL Plugin  

Integrate the SSL Plugin with just a few lines of code with your existing applications and get secure transmission channel. Nobody will be able to intercept your emails with confidential information inside. Features: Works with SMTP, POP3 and IMAP4 components - Anonymous client certificates - Select, verify and view client and server certificates - SSL 2.0, SSL 3.0, TLS 1.0 protocols - Secure connection over both dedicated port and regular port (STARTTLS).

Hosting Requirements: Windows NT/2000/2003
Price: $99

   FilterPlus  

Easily secure web sites that require users to log-in to view some or all of its content. FilterPlus can monitor web sites on a directory by directory basis and can ensure that only authorized users can access these areas. This is great for sites that have premium content for registered users, have pay-per-use content, and require online administration. FilterPlus can also monitor site usage and users browsing habits. Easily track which sections of a web site are viewed the most, how many pages a user has viewed, how often users visit the site, and much more. FilterPlus can monitor a web site on a directory by directory basis as well as on a file by file basis, giving total control over what is tracked and how.

Hosting Requirements: Windows NT/ 2000; IIS 4+
Price: $399

   EncryptCC  

A COM Object to Encrypt and Decrypt credit card numbers for Active Server Pages. Works on all major credit card numbers.

Hosting Requirements: Windows
Price: $19.99

   DigiSign COM DLL  

DigiSign is a COM component to create data checksums, digital signatures, certificates, and a multitude of other applications that require some sort of one way encryption. DigiSign implements the most used algorithms: SHA-1, SHA-256, SHA-384, SHA-512, MD-5, MD-2, RIPEMD-160, CRC-32, ADLER-32.

Hosting Requirements: Windows
Price: $35

   ASPLightning  

VBSCRIPT programmers now have a way to prevent their most valuable intellectual property, their ASP source code, from being stolen. With ASPLightning, your ASP application is packaged as a compiled Active Server Component DLL, making it very difficult to reverse engineer. With this level of protection, you can distribute your ASP application with peace of mind.

Hosting Requirements: Windows 95/98/NT 4.0/2000/XP; Visual Basic 6.0 SP3+
Price: $299

   Chilkat Crypt  

Chilkat Crypt is an ActiveX component that can be used in your Security-sensitive Windows applications and websites (ASP) to secure information and to authenticate and validate data integrity. It supports the latest cryptographic standards and technology including up to 256-bit Advanced Encryption Standard (AES), RSA public-key cryptography, and digital signature creation/validation.

Hosting Requirements: Windows
Price: $289

   ActiveCrypt  

ActiveCrypt - Fast and multithreaded ActiveX object which implements RSA encryption. Especially made for a comfortable work with front-end languages Visual Basic, ASP, C++, Delphi and other tools which support COM technology. Supported symmetric encryption algorithms: AES, RC4, RC5, IDEA, CAST5, Triple DES, DESX, BlowFish. Supported hashes: MD5, SHA1, RIPEMD160. Supported digital signatures: SHA1-RSA, MD5-RSA.

Hosting Requirements: Windows 9x/ NT/ 2000/ XP
Price: $89

   dgEncrypt  

dgEncrypt is an implementation of the Rijndael block cipher, which has recently been selected by the National Institute of Standards and Technology (NIST) as the new Advanced Encryption Standard (AES) for the U.S. government.

Price: $299