Qtrac Ltd.

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Our Books

• Programming in Go
• Advanced Qt Programming
• Programming in Python 3
• Rapid GUI Programming with Python and Qt
• C++ GUI Programming with Qt 4

Our Free Software

• DiffPDF 1.8.0
• Easy Play 1.1.0
• comparepdf 1.0.1
• Alt_Key 2.2.3
  • Alt_Key Library
• optarg Go package

All Our Writing & Software

• Mark Summerfield

Copyright © 2006-12 Qtrac Ltd. All Rights Reserved.

Qtrac Ltd.

Quality Training Research and Consultancy

Qtrac Ltd. (incorporating Qtraining.eu) provides training, consultancy, programming, and documentation services, specializing in the programming languages Python and C++, and in the Qt application development framework—both PyQt4 and C++/Qt 4. All services are provided by programmer and author Mark Summerfield (mark@qtrac.eu).

Services

• Training:
  • Beginners (learn to program from scratch)
  • Python 2 or Python 3
  • Conversion (courses for programmers of other languages)
  • C++, Python 2, Python 3, and Go programming
  • C++/Qt 4 and PyQt4 GUI programming
  • Regular expressions
  • Intermediate/Advanced (progression for those already competent in the language)
  • C++, Python 2, Python 3, and Go programming
  • C++/Qt 4 and PyQt4 GUI programming
• Consultancy:
  • Code reviews, mentoring, and programming in C++, Python 2, Python 3, Go, C++/Qt, and PyQt4.
• Technical authoring and editing.
• Technical book and document typesetting using the lout typesetting system.

Writing

Our books are listed on the right. Our most recent publication is Advanced Qt Programming. We are currently writing Programming in Go: Creating Applications for the 21st Century. We also have a free download, Moving from Python 2 to Python 3 (4 pages, 676K PDF)—a very concise summary of Python 2 ↔ 3.1 differences plus new Python 3.1/3.2 features.

Free Open Source Software

In addition to the example applications which accompany our books (some of which are useful in their own right), we have also created and maintain additional free and open source software, the most popular of which is DiffPDF. This is a GUI application for comparing PDF files page by page, either textually or by their appearance. Available prebuilt for Debian, Fedora, Ubuntu, Mac OS X, and Windows, and in source form for other platforms.

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