OAA® 2.1 Downloads
OAA 2.1 Distribution
Note: source code contributions from the OAA users'community can be found
on the OAA Community Contributions page.
The previous distribution (2.0.12) can be found here.
About the Download Distribution
This distribution provides everything you will need to run and develop
an OAA system under either Windows or UNIX. You will need to download at
least the Runtime Distribution for your platform(s) of choice, and if you
would like to see source code to the libraries or tools, may additionally
download the source distribution.
Although OAA 1.0 supported many languages (Java, C, C++, Prolog, Lisp,
Visual Basic, Borland's Delphi, Compaq's Web Language, Perl), OAA 2.1 currently
supports four: Java, C, Prolog, and WebL. Full source code to these libraries
are included as part of the
Source Code Distribution,
so feel free to help us port them to other languages.
In the meantime, however, please note that the OAA 2 Facilitator provides
backwards compatibility with OAA 1 agents, so that a mix of OAA 1 and OAA2 agents
can work together when connected to an OAA 2 Facilitator. This enables
existing applications in Lisp, Visual Basic, and other languages to be OAA-wrapped and used
in systems with OAA 2 agents. To see the available Downloads and Documentation
for OAA 1, look here.
Please see the
release notes on the main "Distribution Information" page.
The Runtime Distribution includes the OAA Facilitator, several runtime
and debugging tools for managing the agent community, and a sample application
featuring simple natural language access to a dynamic collection of web
sources (weather for national and international cities, a sample employee
database). This distribution should enable you to run and understand an
OAA system. You are then free to create your own individual agents and
In addition, starting with 2.1.0, the Runtime Distribution contains the
Attain NL agents (for Solaris only), and -- just for fun -- the Eliza
and Eliza client agents. Documentation for individual agents, including these new agents, can be
found on the Documentation for OAA 2.1 Agents page.
A version history, as well as the
the current release notes (README.txt from the runtime distribution) can be found
on the OAA 2.1 Documentation page.
This runtime distribution contains all binaries, java jar files, and
scripts required to run the OAA tools and sample application. If you would
additionally like source code for the distribution, go to the OAA
Source Code Distribution section below.
OAA 2.1 Facilitator
OAA Monitor: graphically trace and profile agent community
OAA Start-It: launches a community of agents, and restarts agents
if they unexpectedly terminate
OAA Debug Interface: Send queries and messages to the agent community
or to an individual agent, using English or the Interagent Communication
Language (ICL) (Note: two similar versions of Debug are provided, one
written in Java and one in C. They are functionally equivalent)
OAA Shell Agent: Send queries and messages to the agent community
from the (Unix or DOS) command line.
OAA-WebL Library: Rapidly define OAA agents in Compaq's Web Language
(previously known as WebL) to extract information from the web.
Sample Application including:
DCG-NL Natural Language Parser
WebL script for finding weather from cities
WebL script for extracting employee info from simple web database
Attain NL agents: More powerful NL capabilities (binary only, Solaris only)
Eliza agent and text-based client interface:Ask questions of a phony, annoying psychotherapist
(zip: 2.3Mb): Windows 9x/NT/2000
If you download the Unix distribution using Netscape on a Windows
platform, you may find that it renames the file. If so, just correct the
name manually, following the download, to "oaa_runtime_2_1_0.tar.gz".
Carefully follow the instructions in the README
FILE when setting up the runtime distribution.
Source Code Distribution
The source code distribution provides source code to everything in the
runtime distribution except for the Facilitator
agent. Scripts and makefiles are included to facilitate compilation using
Java JDK 1.2 and Quintus Prolog v3.2.
Note: the source distribution does NOT include any binaries (including
the Facilitator), so you will still need to download and install one of
the runtime distributions. The source tree is compatible and complementary
to the directory structure of the runtime distribution.
The source distribution includes everything for both Windows and Unix environments,
but for convienience, has been listed twice below, once compressed as a
zip file and once as a gnuzipped tar file.
Notes on C library
The Source Code distribution now includes source code for the OAA2
C library, the debug agent ported to C as an example, and a
simple OAA2 C sample agent. Makefiles and
MS Visual C++ (Ver 6.0 and later) project files are provided
to regenerate the library and the examples.
Correspondingly, the Runtime Distribution now contains a
compiled version of the library (liboaa2.a for UNIX and LINUX,
liboaa.dll for Windows) and executables for the debug agent.
The debug agent is a GUI-based agent, built on top of an excellent
lightweight and multi-platform framework called fltk. Even though we
included all fltk components needed to compile our examples, we invite you
to visit the
official fltk website for
complete information and documentation.
Copyright 2000-2001, SRI International.