Pages marked as (internal IBM only!) can only be accessed from withing IBM's internal TCP/IP network. If you don't know whether you can access them, then you probably can't.  And since I no longer work for IBM, I can't personally verify the links any more.  Most of the links are to OS/2-specific sources of information, however links to generic (i.e. not platform-specific) sources are included for completeness.  This page only list WWW resources. There are no pointers to ftp-able files, with a very few notable exceptions. There are also pointers to search engines and other pages that can direct you to a particular file.  Items that have been struck-out have invalid links, but it is not known yet where the page has moved or been deleted. Any information as to the whereabouts of these links would be greatly appreciated.  Upcoming conferences, seminars, and tutorials  IBM IBM Global Campus Education and Training - Offers courses on several topics, including OS/2 development, at a city near you. WarpStock 1997 - An OS/2 user/developer conference, October 25/26 in L.A Support pages  IBM Object Technology Certification - for Java, C++, Smalltalk, and even COBOL  NEW! IBM Besteam - IBM's channel marketing partner program  NEW!  DevBahn - striving to collect every known OS/2 development resource still in existence  NEW!  The Solution Developer Program - sign up now to get the Workspace On-Demand Certification Kit Developer Connection CD-ROM IBM internal SDO homepage (internal IBM only!) - Lots of interesting info Online References  IBM Software Study Guides - mostly non-programming stuff, but may be useful anyway  NEW! Prominare's GUI Corner - From OS/2 Developer and OS/2 Magazine Stéphane Charette's reference page - Various INF files for online viewing IBM InfoLink PWS Manuals - Various OS/2 and MMPM/2 programming manuals online, mostly Warp 3 The OS/2 API Project - OS/2 API documentation on the web Magazines with OS/2 programming content  IBM Developer Connection News  NEW! EDM/2 homepage - Your first stop for online OS/2 programming information OS/2 Times - Hungarian OS/2 magazine OS/2 e-Zine - With the occasional developer-related article FTP sites (or their WWW equivalents), search engines, and other indices  OS/2 Warp Softeware Developers on the 'Net - A HUGE list of companies individuals that do OS/2 software development.  This site is a must-see  NEW! Software Development Online - search for development tools for several OS's - has some interesting OS/2 choices  NEW! Programmer's Info Page - Another generic programming web index Darkstar Homepage - Programming and Computer Science index. Nothing OS/2 specific, but a great reference nonetheless Jumbo's OS/2 Programming Links - Not much, but they have old MSJ articles on OS/2 Hobbes' dev directory - LOTS of stuff, newly re-organized LEO's (Link Everything Online) OS/2 developer area - Another hobbes-like FTP site IBM Employee Written Software - Some programming tools, download EWSCAT Free compilers page - Search for a free compiler of any language News groups  comp.os.os2.programmer.tools - OS/2 development tools comp.os.os2.programmer.porting - Porting apps to OS/2 comp.os.os2.programmer.oop - SOM, WPS, and other OO OS/2 programming comp.os.os2.programmer.misc - General OS/2 programming Device Drivers and Real-Time  PDD = 16-bit Physical Device Driver, VDD = 32-bit Virtual Device Driver  DDK Online - The entire OS/2 DDK now available for free! LEO's OS/2 driver sources - Location of a sample 32-bit PDD and IFS driver, among other things Alger Pike's I/O and device access under OS/2 - A programming reference and PDD tutorial Stefan Zollner's Real-Time OS/2 page - Info on real-time data acquisition with OS/2 OS/2 Device Driver Programming FAQ ICAT - Source-level debugging for device drivers! Watcom C/C++ - for developing device drivers, great inline assembly support C/C++ (This section is due a major overhaul)  CIDLib - Visual Age C++ class library for the OS/2 API YACL - Cross-platform class libraries RogueWave - Source for several cross-platform C++ class libraries Introductory C Programming - Notes from a class IBM VisualAge for C++ Professor Owl for OS/2 - Works with Borland C++'s OWL Watcom C/C++ - 16- and 32-bit compiler, compile for any platform from any platform comp.lang.c.moderated comp.lang.c++.moderated Java (OS/2-specific information here only)  SerialPort - Java serial port control for several OS's  NEW! Aaron William's OS/2 Java Page - Just start here  NEW! Lotus Domino - Use Notes as a web server RogueWave's JFactory visual builder Innovative Software, makers of OEW for Java and VisualWeb for OS/2 comp.lang.java.programmer Pascal  Alex Vermeulen's homepage - source for a Virtual Pascal interface to TIMER0, serial port access, and port I/O  UPDATED! Speed-Pascal/2 for OS/2 - from SpeedSoft Sibyl - Borland Delphi compatible visual development environment, also bfrom SpeedSoft  NEW! Virtual Pascal/2 LiveSystems Software - CSys toolbox for compressed file I/O comp.lang.pascal.misc Ada and Ada95  AdaCore Technologies - GNAT (free Ada95 compiler) for several platforms available here comp.lang.ada Modula-2, Modula-3, and Oberon-2  Peter Moylan's Homepage - Extensive collection of links and info on Modula-2 and OS/2. comp.lang.modula2 comp.lang.modula3 Assembly Language  NASM - A cross-platform assembler  NEW! x86 Programming Tips - Opcodes and optimization tips on all x86 processors FWKTL - Lets you write self-modifying assembly apps Intel's Pentium Pro developer's manuals - P6 info in PDF format Intel's Pentium developer's manuals - P5 info in PDF format DataRescue IDA Pro - Interactive disassembler now for OS/2 The Art of Assembly Language Programming - 80x86 Asm tutorial and reference online comp.lang.asm.x86 FORTRAN  Watcom FORTRAN 77 comp.lang.fortran Smalltalk  VisualAge for Smalltalk comp.lang.smalltalk Rexx:  BREXX Page - online Rexx reference manual  NEW! LogiSoft AR's RexxBOS - A complete OS/2 system interface for Rexx The Rexx FAQ Hobbes' Rexx file area NexRexx - Is it Rexx or is it Java? You decide Ian Collier's Rexx page IBM Hursley's Rexx page REXX information Using REXX to repair and control the desktop comp.lang.rexx Tcl/Tk  Ilya Zakharevich OS/2 ftp directory - One of the Tcl/Tk ports can be found here Hobbes' unix directory - Look here for the latest tcl*.zip file comp.lang.tcl Perl  Ilya Zakharevich - a Perl port Hobbes' unix directory - Look here for the latest perl*.zip file Prolog  PMPro Prolog - Low-cost Prolog interpreter PDC's Visual Prolog - Cross-platform Prolog compiler comp.lang.prolog BASIC  VisualAge for BASIC comp.lang.basic.misc COBOL  VisualAge COBOL comp.lang.cobol PL/I  IBM PL/I comp.lang.pl1 APL  IBM APL2 comp.lang.apl RPG  VisualAge for RPG Client - IBM's RPG software runs on an AS/400 server and an OS/2 or Windows client, although the web page touts the Windows version Visual programming, CASE, RAD, etc.  Prominaire Designer RogueWave's zApp VisualAge Generator Apical Software - Makers of GPF comp.lang.visual - Moderated Databases  OS/2 Database Mailing List  NEW! Maxxum Consulting - Makers of the Base32 xBase compiler Dirk Ohme's homepage - Various SQL, DB2, and ODBC stuff 40th Floor's Bullet - Cross-platform database engine toolkit DBExpert - Relational database for OS/2 Oracle products for OS/2 - Makers of Oracle 7 and Developer/2000. IBM Data Management Products - DB2 and other database software OpenGL  OpenGL web page IBM OpenGL web page OpenGL For OS/2 Lotus Notes  Lotus Domino - Use Notes as a web server Lotus VisualAge for Lotus Notes OpenDoc and SOM  OpenDoc Part Ideas - Repository for OpenDoc parts (mostly just ideas and suggestions)  NEW! SOMware at the Club - IBM page for SOM Club OpenDoc IBM Software Development downloads - There are sections on OpenDoc and SOM at the bottom Distributed Computing  DCE for OS/2 Warp Reference  NEW! Embedded Systems  DSP Development Tools - A substantial list from Embedded Systems Programming Magazine; only one or two support OS/2, but many are DOS apps  NEW! ESP Magazine's embedded systems develop internet resouces - tons of links to WWW resources on embedded systems development  NEW! TMS320C1x/C2x/C2xx/C5x Assembler/Linker - there's one native OS/2 app, the rest are DOS  NEW! Presentation Manager (PM)  Anatomy of a PM program Multimedia, Graphics, and Game Development  OS/2 Game Developers' Group - an informal group of some OS/2 game programmers  NEW! DevBahn Game Programmer's Sanctuary - Repository of everything related to OS/2 game programming  NEW! RTMIDI, the OS/2 Warp Real-Time MIDI Subsystem QuickTime - Available on OS/2 in 1997 (should have been out by now!) Wordup Graphics Toolkit for OS/2 - By PolyEx Software Digital Sound and Music Interface for OS/2 - Realtime audio mixing and more! Stéphane Charette's reference page - Various INF files for online viewing, including rare MMPM and gaming docs. XFree86/OS2 (XWindows for OS/2)  The XFree86 Project XFree86/OS2 Project Patches, updates, fixpacks, and corrective service diskettes (CSDs)  IBM VisualAge languages IBM Visual Gen Other IBM languages - APL/2, C Set, PL/I DB2 Version Control  The Configuration Management FAQ - the FAQ for comp.software.config-mgmt  NEW! Team Connection - The ultimate version control software, for several platforms. This product used to be called CMVC. Revision Control Engine - a cross-platform SDK for revision control PSP CMVC homepage (internal IBM only!) Source Integrity by MKS. ProblemTracker - Tracks bug reports RCS 5.6.7.4, the GNU revision control system, ported to OS/2 by Kai Uwe Rommel. Click here to search for it on hobbes. PVCS from Intersolv. Application with documented plug-in API's  Sundial's Mesa/2 - Spreadsheet Stardock's Galactive Civilizations 2 - Strategy game SPG's Colorworks 2 - Image editor WebExplorer - web browser Editors and Viewers  Visual SlickEdit - An awesome editor. This is what I use, and it's available on a dozen platforms. FTE Text Editor - For OS/2, Linux, and Windows NT Compuware's PREDITOR BOXER/OS2 - The Boxer editor for OS/2 Mr.Ed Debuggers  ICAT - Source-level debugging Profilers, optimizers, validators, and listing generators  Source Mapper - Generates source map from C source Prominare Validator - Checks your OS/2 API calls LX-OPT Lite - EXE/DLL page tuner. Click here to search for it on hobbes. Mail-order  OS/2 SuperSite's New User section - contains a list of places to buy OS/2 software  UPDATED! Employment services for OS/2 Developers  SuperSit.Net's software jobs - You might find an OS/2 position listed here OS/2 Jobs Mailing List - Put "subscribe os2jobs-l your_email@address" in the body BT&T OS/2 job postings Miscellaneous  TVFS_RM - A GUI for TVFS  NEW! Wotsit's File Format Collection - The specs for hundres of different file formats  NEW! Phil Crown's OS/2 Programming Links - A page much like this one Dave Briccetti's page - Programming Tips and Samples (VisualAge, Internet, PM/UICL, etc) Holger Veit's page - Kernel hacking and other goodies LiveSystems Software - Miscellaneous tools Andy's code hole - Miscellaneous OS/2 source code