BinaryNotes
   An ASN.1 framework for Java and .NET based on annotations/attributes. The framework has the flexible ASN.1 compiler, the runtime library that supports BER, DER and PER, and the Message Queues. [Open Source, LGPL v2/ GPL v2]
   http://bnotes.sourceforge.net/

CMATH
   Assembler written complex number math library (single, double and extended precisions), intended as a high-quality replacement for the available C++ complex class libraries, and as an add on for Pascal or Delphi.
   http://www.optivec.com/cmfuncs/

ComISDN
   Advanced TAPI Service Provider (TSP) for COmputer Telephony Integration and IP Telephony.
   http://www.comisdn.com

ConvertSpot
   Provide COM/DLL components to convert PDF to XML, PDF to text, MS Word to text, PowerPoint to text, Excel to text, Excel to xml, Excel to CSV.
   http://www.convertspot.com

DC Micro Development, Inc.
   Cross-platform development libraries for C/C++ and Visual Basic. Products include libraries for data compression, TCP/IP protocols, dynamic html emission, and help authoring software.
   http://www.dcmicro.com/

DLL Files
   Archive of DLL files for Windows.
   http://www.dlldll.com/

DMM_Windows_DLL
   A Win32 library allows to adjust shapes of windows and to work with translucence and transparency of the windows. All the functions can be combined with one another so that interesting effects in the windows can appear. [Commercial]
   http://www.dmm.cz/en/dmm_window_dll.htm

DSX
   Developer of ActiveX, Win32 DLL, and JavaBean tools for barcode solutions.
   http://www.dsxtech.com/

Developer City: Free Programming Resources: Libraries
   A variety of free libraries, with or without source code, for: accessing databases (with/without ODBC, SQL), encryption, graphics/images, compression, fonts, GUI's, 3D engines, 2D engines, and sockets programming.
   http://www.thefreecountry.com/sourcecode/index.shtml

DllDump
   A collection of over 700 DLL files.
   http://www.dlldump.com/

DoneEx Software
   Software tools for developing desktop applications, including: DoneEx AppBinder ActiveX - allows launch DOS or Win32 console programs from application and to capture the standard input and output data streams of launched program; DoneEx AppBinder DLL - he
   http://www.doneex.com/

EDSS/Models-3 I/O API
   Provides the environmental model developer with an easy-to-learn, easy-to-use programming library for data storage and access, available from both Fortran and C.
   http://www.baronams.com/products/ioapi/

Greenleaf Software
   Serial communications libraries, components and tools.
   http://www.greenleafsoft.com

Guasi
   The GUASI library implements a thread based generic asyncronous execution engine, to be used to give otherwise syncronous calls an asyncronous behaviour.
   http://www.xmailserver.org/guasi-lib.html

HtmLayout
   A small, fast embeddable HTML renderer, HTML layout manager and HTML printing DLL for Windows. [Commercial]
   http://terrainformatica.com/htmlayout/

Hunny Software
   MIME tool kits for C++ and Java, .Net.
   http://www.hunnysoft.com/

MarshallSoft Computing
   Serial communications, email, FTP, and winsock libraries for Windows.
   http://www.marshallsoft.com/

MultiMedia SoftWare
   32 bit DLLs for Windows: component for MS Windows Mixer controlling, component for any windows controlling. [Commercial]
   http://www.mmsw.cz/

MySoftwareStudio.com
   Reusable software components written in PHP, JAVA, C++, C#, Perl. Packages include full documented source code, tutorials, and example implementations. [Commercial]
   http://www.2myplanet.com/mysoftwarestudio/softwareComponents.php

Nine-9s
   Protocol stack software for telecom and data communications protocols in source code. Also video and audio codecs.
   http://www.nine-9s.com/

OpenML (Open Media Library)
   A cross-platform standard programming environment for capturing, transporting, processing, displaying, and synchronizing digital media (2D and 3D graphics, audio and video processing, I/O, and networking).
   http://www.khronos.org/openml/

OptiVec: Libraries for Engineering and Science
   OptiVec offers more than 3000 Assembler-written vector, matrix and complex math functions for PC language compilers, 2-3 times faster than compiled code.
   http://www.optivec.com/

RTF-to-HTML DLL
   DLL/COM for convert RTF and text in to HTML, XHTML format.
   http://www.sautinsoft.com/com/rtf-to-html_dll/rtf-to-html_dll.htm

SGE
   API that provides low level access to audio, keyboard, mouse, and display framebuffer across multiple platforms.
   http://www.etek.chalmers.se/~e8cal1/sge/

SI Grid DLL
   A 32 bit grid control for use in Windows development. By Software Innovators. [Commercial]
   http://www.softwareinnovators.com/products.php?SM=TL&PD=SIGRID&PHPSESSID=c6edb65368133c950cde4cccfbf142de

SlavaSoft FastCRC Library
   Fast, highly optimized implementation of popular checksum algorithms: CRC32, CRC16, CRC16C (CRC-CCITT). The library allows to calculate checksums for files, memory blocks, strings, streaming data. C/C++, VB examples. [Shareware]
   http://www.slavasoft.com/fastcrc/

SuperCom TCP/IP
   An optimized, thread based, Low Level Engine, which handles simultaneously connections, buffers data and generates events. Optimized threads reduce CPU load to minimum. A dual mode programming interface is provided (DLL and ActiveX). [Commercial]
   http://www.adontec.com/supert_e.htm

The Dynamic Link Library
   Collection of 36000 Windows system files like DLL, OCX, VBX, INF and SYS.
   http://www.dynamiclink.nl

WCSC
   Serial communication libraries, drivers, and DLLs for all Windows and MS DOS that include Zmodem, Xmodem, and Ymodem file transfer protocols, as well as full modem control. Nine bit and Multidrop protocol for RS232, RS485, & RS422 serial communication
   http://www.wcscnet.com/