Here are some of the Open Source™ projects that the
OPAL Group is currently hosting or has recently contributed to:
For information or questions, please contact
Technologies and Standards
The OPAL Group is a major proponent of several key technologies and
standards. We are committed to supporting these efforts and the
communities that have formed around them through leadership, community
participation, advocacy, and Open Source™ contributions such as
those listed on this site.
- The Python programming language
Python is powerful object oriented interpreted language that is
widely recognized as being one of the most easily learned and
productive languages ever invented. Despite its simplicity, many of
our "big-iron" business application are built in this modern and
elegant little language. We invite you to spend just 20 minutes to
read either a
programmer's tutorial
or
non-programmer's
turorial on Python. Its possibly the last computer language many
of you will ever need to know.
- The PostgreSQL database management system
PostgreSQL is a sophisticated Object-Relational database that
supports almost all SQL constructs, including subselects,
transactions, and user-defined types and functions. It is one of the
most advanced open-source database available anywhere, and has a long
had a reputation for reliability and setting the state-of-the-art
for other open-source database projects.
Database related projects
- UPDATED!
Python Database Row Module Version 0.8
This Python 2.2/2.3 module defines light-weight objects which allow
very flexible access to a fixed number of positional and named
attributes via several interfaces. Or, more simply, these objects are
a better way of returning the results of database queries, since they
allow effcient access to fields by name or by index. It uses some
of the new features of the Python 2.2 class system, and provide a nice
demonstration of how to take advantage of them.
Now includes pre-compiled Win32 modules for Python 2.2 and 2.3!
Download:
- Python DB-API 2.0 driver for Microsoft ADO Version 0.1
This Python module implements the beginnings of a DB-API 2.0
compliant driver for Microsoft ADO. It is not yet fully functional,
though most features should work except for bound parameters.
Download:
- PostgreSQL
Pl/Python embedded SQL interpreter
We have contributed several security enhancements, bug fixes,
code-cleanups and bug reports. These have already been incorporated
into PostgreSQL 7.2. New work is progressing on additional features
and enhancements to be included in the eventual PostgreSQL 7.4
release.
Web standards projects
- SelectORacle:
English & Spanish translations of CSS2 and CSS3 selectors
(soon to be released in open-source form)
Cascading Stylesheets are now a ubiquitous part of the World
Wide Web, though few have mastered its intricacies. So if you have
you ever wondered what a particularly complex CSS selector really
means, here's your chance to find out! SelectORacle is an
educational tool that translates even the most complex CSS2 and CSS3
selectors into fairly understandable English or Spanish. It is
implemented in pure Python code, and includes a fully functional CSS3
parser.
Miscellanea
- Improvements to John Aycock's
SPARK
Scanning, Parsing, and Rewriting Kit toolkit
(patches submitted to John Aycock, though they will be posted here soon)
We have made several small improvements to SPARK, our favorite
parser for little (and not so little) languages. Our patches address
parser performance, Python 2.2 compatibility issues, interactions
between SPARK and the Python garbage collector, enhanced grammar
debugging, and more flexible AST matchers. These changes can result
in significantly increased performance of parsing some grammars,
sometimes by as much as 300%.
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