JFreeChart is a free Java class library for generating charts (GNU LGPL). Pie charts, bar charts, line charts, time series charts, meter plots, candlestick plots, high-low-open-close and more. Complete source code included.

The BKAudio v2.0 class library allows you to visually add sounds to your .NET applications! Per Developer and Source Code Licensing are available. In both cases, there are no runtime royalties or other fees! Updates for the current version are free.

Easy to use professional serial communication C++ class library for Windows XP, Windows 2000, Windows Me, Windows 98, & Windows 95. Includes the ZModem, YModem, & XModem file transfer protocols. Supports Microsoft Visual C++ & Borland C++.

Olvio.Ecommerce is a payment processing class library for the Authorize.Net gateway. It includes all the latest features, SIM and AIM integration methods, CC and ECHECK processing, hash validation, response stream reader and more.

Aspose.iCalendar is a .NET class library providing classes and algorithms useful for time-oriented Recurrence Patterns, or Schedules and also works with Windows Vista RC2. It presents Recurrence Patterns in your Windows, Web or a Mobile application.

FTP C++ class library to upload/download/delete files. Get FTP directory listing, upload directory trees with restart, xfer to/from memory, create/delete remote dirs, session logging, MGET/MPUT, proxy support, active/passive, binary/ascii modes.

dtLibrary is a class library packaged as a single ActiveX DLL. This library offers multiple classes for retrieving and/or updating system information, including ini files, registry access, file/disk information, memory and power information, etc.

This is a C++ template class library to perform matrix calculations with ease and efficiency in your programs. It supports most of the matrix calculations that you may need to do in your C++ programs. Full source code is included with the package.

XtraFtp .NET class library offers a number of classes that make the work of transferring files directly from your application using FTP/SSL more easily.

NetXtremeProxy .NET class library offers an easy way for applications to send data to a host through a proxy server. It supports HTTP Connect, SOCKS4, SOCKS4A or SOCKS5.

RSS Magic is a .Net class library that allows developers the ability to download, manipulate, and save RSS feeds through familiar properties and methods. The RSS Magic component creates RSS feeds that conform to RSS version 2.0.

Xceed Zip for .NET is a 100% managed data compression and all-purpose file manipulation class library for .NET. It provides flexible zip, unzip, streaming, self-extracting and an innovative and extensible filesystem object model.

The EyeC++ library is a high-performance, high-quality, C++ class library intended for both image file format conversion and image viewing tasks. Pricing is differentiated so that you pay only for what you need. Full source code is supplied.

NetXtremeFtp .NET class library offers a number of classes that make the work of transferring files directly from your application using FTP/SSL and SFTP more easily.

Aspose.iCalendar is a .NET class library providing classes and algorithms useful for time-oriented Recurrence Patterns, or schedules.The latest version created better Winforms and ASP.NET demos;ect.

The JustFormsPDF library is a Java class library for filling or editing interactive PDF forms on-the-fly. This PDF library requires no other packages to be installed and will run easily from any Java project including JSP, Servlets and EJB.

This Java class library offers refined numerical procedures to either construct a function of one or two variables from a set of points (i.e. interpolate), or solve an equation of one variable.

The Chilkat C++ class library for VC++ 8.0 fully supports SMTP, POP3, MIME, HTML, SSL, S/MIME, secure authentication, attachments, SSL, progress monitoring, zip and unzip of attachments, XML import/export, and is fully internationalized to handle ema

The Chilkat C++ class library for VC++ 6.0 fully supports SMTP, POP3, MIME, HTML, SSL, S/MIME, secure authentication, attachments, SSL, progress monitoring, zip and unzip of attachments, XML import/export, and is fully internationalized to handle ema

HS TFTP .NET class library is a .NET component which implements TFTP server and client functionality over UDP socket layer according to RFC 1350 (Trivial File Transfer Protocol)

Type Browser is to be used for any public type from .NET Framework Class Library (FCL) browsing. It shows: - types by category (Enum, Class, Interface,...) in the assemblies. - their members by category (Fields, Methods, Properties, Operators,...)

JFreeReport is a free Java class library for generating reports (GNU LGPL). Headers, footers, grouping, report functions, print preview, export to PDF and more. Complete source code included.

A .NET class library for OPML ( Outline Processor Markup Language ) providing a reusable object model for reading/writing or importing/exporting OPML files or documents.