Chilkat is a cross-language, cross-platform API providing 90+ classes for many Internet protocols, formats, and algorithms.

Products
POP3 / SMTP
Zip, GZip, Bz2, .Z Compression
Data Compression
TAR Archive
FTP2
IMAP
Encryption
RSA Encryption and Signatures

Best selling POP3/SMTP email .NET component for C#, VB.NET, and ASP.NET. Best selling Zip .NET component for C#, VB.NET, and ASP.NET. HTTP client component for communicating with HTTP servers.

C#, VB.NET, ASP.NET, ASP, VB6, FoxPro, VBScript, Delphi, SQL Server, C/C++, Objective-C, Swift, Xojo, Node.js, C++ Builder, Powershell, Perl, PHP, Ruby, Java, Python, Lianja, PureBasic, all languages supporting ActiveX (such as PowerBuilder, DataFlex, etc.).

ActiveZip for ActiveX lets you add high-speed, reliable, zip/unzip functionality to your applications regardless of whether you are manipulating files or memory. The comfortable object oriented class structure will allow you to work quickly and easily regardless of your project's complexity.

Mandatory are file to be signed (To be signed)
and the two keys: publicKey and private key,
you can easy generate public key from private key
using "From PrivKey" button of PublicKey section,
there is no way in hell you can get private key from public key,
RSA 1024 is commonly used and sometimes (not often) even RSA 2048.
Rest of informations are optional and will be filled with some default values.

Best selling POP3/SMTP email .NET component for C#, VB.NET, and ASP.NET. Best selling Zip .NET component for C#, VB.NET, and ASP.NET. HTTP client component for communicating with HTTP servers.

C#, VB.NET, ASP.NET, ASP, VB6, FoxPro, VBScript, Delphi, SQL Server, C/C++, Objective-C, Swift, Xojo, Node.js, C++ Builder, Powershell, Perl, PHP, Ruby, Java, Python, Lianja, PureBasic, all languages supporting ActiveX (such as PowerBuilder, DataFlex, etc.).

Best selling POP3/SMTP email .NET component for C#, VB.NET, and ASP.NET. Best selling Zip .NET component for C#, VB.NET, and ASP.NET. HTTP client component for communicating with HTTP servers.

Private exe Protector (PEP) is a professional software copy protection and license management. PEP works with traditional methods, such as file compression, code fragment encryption, metamorphic loading, protection from debugging and file tampering, and features new innovative techniques like data protection with stolen resources technique. All in one, it is the ideal solution for software developers.

vBulletin 5 Connect provides unparalleled capabilities for building community websites. The software facilitates increased content creation, more engaging content discovery and simplified site management. The new Site Builder makes it easier than ever to build and manage a site. Customizable page templates, drag-and-drop configuration and in-line site editing simplify page layout. A variety of design themes can be easily selected.