We are an independent software vendor (ISV); we develop and market


…and we provide training and consulting in their use.

We also provide general consulting and expert witness services.

NOTE — in 2013 our name changed from Pennington SYSTEMS INCORPORATED to XTRAN, LLC.
  Our Web and email addresses changed from Pennington.com to XTRAN-LLC.com.

Wouldn't you like to automate your software work?

Reduce cost of software creation and maintenance
Shorten software schedules

Get more done with existing software staff by multiplying their effort Increase and monitor software quality
Reduce risk of delayed delivery, cost overruns, or even project failure
Reduce backlogs
Increase transparency and accountability
Increase profitability and competitiveness

You can, using XTRAN!

XTRAN is a software meta-tool we have developed that marries compiler and expert system technologies to automate software tasks throughout the Software Development Life Cycle — manipulating a wide variety of computer languages, data, and text — using a rules language that can be learned by any senior software developer.

XTRAN is used by large and small organizations around the World to automate their assessment, transformation, and translation of code, data, and text:

 Translating a chip manufacturing Automated Testing system from MACRO-11 assembler to C.  Providing PL/I code quality monitoring and automated remediation for a major consumer data vendor.
 Translating data capture and command/control software for the Joint European Torus (JET) fusion reactor in the UK from Norsk Data NPL to C.  Translating parts of a submarine GPS position capture system from Pascal to C.
 Cross-linking and indexing XTRAN's own User's Manual in HTML.  Translating an automatic transmission modeling system from PL/I to C.
 Translating an airport Air Traffic Control System from PL/M to C.  Automating forensic code analysis in support of expert witness activities.
 Error-checking links and creating the site map for this Web site.  Translating parts of the City of London's traffic light control system from VAX assembler to C.
  Translating parts of an Australian AWACS system from VAX Pascal to C.  Creating a script for renumbering many files.
 Translating a parking lot control system from an ancient Pascal dialect to C++ , and finding subtle real-time bugs in the original Pascal.  Translating parts of a "faster than real-time" air route loading simulator from PL/I to C.

"With XTRAN, code and data become clay,
XTRAN's rules language creates the modeling tools,
and you are the sculptor."

Stephen F. Heffner, author of XTRAN       

"When you first read about XTRAN's capabilities it sounds like magic.
There are numerous working examples available of its capabilities
so you can see its usefulness for yourself."

— Charlie Bess, EDS / HP Fellow (retired) in his blog,     
"Beyond the Intersection of Business and IT"     

"We have used this product because we had to convert our software
written in various languages, among those Pascal.  Migration on a new
processor board was mandatory and we also used the opportunity
to have the code written in C++ and cleaned up.

"XTRAN is a great tool to achieve such a conversion.  Steve's support
was great too.  With only 2 programmers and XTRAN, we managed the
conversion of a decade of investment in a short time."

Bernard Lacoste, CEO of ZEAG       
(now Hub Parking Technology),       
Spreitenbach, Switzerland

It's all about leverage

XTRAN's rules language provides tremendous leverage in automating software, data, and text work.  Minor tasks take hours to automate, significant tasks take days, and major tasks take weeks.

Here are some illustrations involving relatively small software, data, and text automation tasks, with links to the relevant examples.  Most of these XTRAN rules are generalized and parameterized, so they can be used in many different situations.  Some are also language-independent, so they are usable without change for many languages.

    Software task automated     Time to create & debug rules

    Create HTML image table from image file name list       < 1 hour
    Mine Web pages for keywords       < 1 hour
    Analyze straight-line code (SLC) run length by code nesting depth       1 hour
    Replace COBOL arithmetic statements with COMPUTEs       1 hour
    Forensic analysis of function signatures       1 hour
    Link parent statements with ending child statements, render as HTML       1 hour
    Count significant word occurrences in text       < 2 hours
    Sum integer DSV field for each of another field's text values       < 2 hours
    Markov analysis of code statement type transitions, output as DSV       < 2 hours
    Normalize vocabulary in DSV data       < 2 hours
    Analyze computer language features used       2 hours
    Normalize tags and vocabulary in XML       < 3 hours
    Colorize code based on nesting depth, render as HTML       < 3 hours
    Enable Sorting of DSV Data       < 3 hours
    Highlight expressions & operators, render as HTML       < 3 hours
    Content-addressable data storage & interactive retrieval       < 3 hours
    Create shell script to renumber files based on name patterns       < 3 hours
    Format text items into columns       < 3 hours
    Add I/O documentation to code       4 hours
    Highlight file & terminal I/O, render as HTML       4 hours
    Manipulate tree dependencies       < 6 hours
    Error-check HTML links & create site map       8 hours
    Analyze word phrases in text       < 9 hours

How can such powerful and generalized task automation be created in so little time?  Because there is so much capability already available as part of XTRAN's rules language, primarily via XTRAN's built-in meta-functions.

XTRAN comes with many existing rule sets, including those listed above, for automating a wide variety of tasks, so you can start using it right out of the box.  And, after training, you can modify existing rules or create new ones to make XTRAN do exactly what you want.

What can XTRAN automate?

What you can automate with XTRAN

Via its rules language, XTRAN provides automation of virtually any software task to the greatest possible extent.   We support this claim with many .

XTRAN's capabilities include automating every aspect of every software project and process of areas to which XTRAN has been applied include:

  • Assess your code's quality and standards adherence ; remediate it and keep it healthy through ongoing monitoring
  • Reverse engineer your code's architecture from the code itself , to create or verify system documentation
  • Modernize your legacy code , including impact assessment and code transformation
  • Rehost your code to a new platform , including impact assessment and code transformation
  • Migrate your code to a new language , including impact assessment and code translation
  • Automate forensic code, data, and text analysis — for Information Security, law enforcement, and civil litigation
  • Create code visualization tools 
  • Create code utilities 
  • Create Web utilities 
  • Automate data analysis and manipulation 
  • Automate text analysis and manipulation 
  • Create general utilities 
  • Automate year 2000 (Y2K) Impact Analysis (preserved as an XTRAN illustration) 

How can XTRAN benefit you?

XTRAN's benefits apply to any organization with responsibility for a significant amount of code.  To find out how, please review the following common benefits first:

Then return here and select the organization type that best describes you:


Whether you want to document, analyze, standardize, improve, or re-engineer your code, need to change programming languages, computer hardware, operating systems, or APIs, or analyze or manipulate data or text, our software and services can help you.  Put our 50+ years of creating sophisticated, high quality software to work for you!

Questions?  Comments?

If you have questions or comments about XTRAN, us, or this Web site, please

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Firefox and Chrome users, please read!

There is a Windows DirectWrite bug that causes the Arial Black type face to render incorrectly.  If this — XTRAN — doesn't look similar to this — , then:

  • If you are using Firefox, please enter "about:config" (no quotes) in Firefox's URL box, click "I'll be careful" on the warning if it appears, and set the value of "gfx.direct2d.disabled" to true.
  • If you are using Chrome, please enter "chrome://flags/" (no quotes) in Chrome's URL box and enable "disable DirectWrite".