BASIC 1.0a Clipper 5.2 function
  library. 7 Of the most commonly
  use functions. A Must have. 
  Transparent Shadow, Headers and 
  fotters, save and restores you 
  functions or procedures SET() 
  parameters. Percent meter
  Please wait box. And More

  Quickbasic Control Center 3.0, The
  ULTIMATE TOOL for Quickbasic programmers.
  Format, Backup, Print, Delete, Remove
  Comments or REM Statements to save space
  at compile time, or even keep a database
  or your Quickbasic programs. Built in
  DOS Commands, all from a menu driven
  interface. Specify how you want your program
  formatted. Great for formatting source
  code for easy reading. Lots of features,

  DoorFrame v4.5 Doors development library for
  QuickBasic 4.x. Has direct support for most
  BBS software, COM 0 - 15, up to 115K Baud,
  non-standard IRQ's, multi-nodes, music, high
  score bulletin, box and line drawing, ANSI
  and ASCII file send. Now supports multi-port 
  boards using a FOSSIL including PCBoard/M.
  Also detects and reports the presence of
  RIPscrip on the remote. A Livewire Program.

  DNA lib is a PB3 power basic add-on
  library...pretty good! Example
  code is included.
  Downloaded from powerbasic BBS.

  FOSSIL45 is a QuickBASIC 4.5 library which
  allows you to interface with a FOSSIL
  serial communications driver such as
  X00.SYS. Allows programmers to easily
  incorporate FOSSIL support in their
  programs without hassle. Detailed
  documentation included.

  Originally designed to fix problems in
  QuickBASIC source code, INDENT has grown
  to become a large code processor.  It has
  the power to take any QuickBASIC source
  code, regardless of how poorly structured
  and formed, and create properly
  structured, indented and documented source
  code. It will split compound lines and
  create properly structured nests, line up
  comments for readability and more.  Works

  * MENUSYS for PowerBASIC *
    * Version/Release 1.1 *
  A complete text-mode GUI for
  Spectra's PowerBASIC 3.0, with 
  pull-down menus, mouse support 
  and context-sensitive help.  
  Also included is MENULIB, a 
  library of high-level support
  routines designed to work with
  MENUSYS routines. Shareware,

  PBTools:Classic 1.31, PowerBASIC 3.x Library
  The  ultimate   library for  PB programmers,
  upgraded  to work  with  PowerBASIC 3.0a and
  above.  Includes  windowing,  menus,  string
  handling, and  lots  more.  $39 shareware by
  Dave Navarro, Jr.

  QBserial Version 3.20; Communications library
  for QuickBASIC 4.x, Basic Compiler 7.x, VBDOS
  1.x, and FOSSIL drivers. Allows programs to
  access Comm ports at rates up to 115200 baud.
  COM1-4 and non-standard addresses supported,
  on IRQ's 1-15. Interrupt driven, CTS/RTS &
  XON/XOFF flow control. Full DTR and RTS
  control, and more. Comes with sample code.
  Very easy to add to your program.

  QB45 ICON TOOLBOX <ASAD> v2 TOOLBOX LIBRARY
  COLLECTION OF ROUTINS FOR QBASIC 4.5, ICON
  GENERATOR,CONVERTER,BOXES AND TEXT. REG $30

  TPW2VB 3.0 by Brett Liddicoet. A
  development kit that allows the
  creation of Visual Basic custom
  controls using Turbo Pascal for
  Windows. SHAREWARE: $25

  VB Source to Document by Eddie Juden
  Creates a Word for Windows Document
  from any MAK file. It will highlight
  all SUBs and FUNCTIONs, mark all
  Rem'med statements, count SUB and
  FUNCTION usage, and create a Table of
  Contents. This is a powerful debugging
  tool. SHAREWARE: $25