Free debugger software for windows

XSL-FO Debugger is a free software for visual debugging of XSL stylesheets. It is based on Altsoft Xml2PDF formatting engine.
In short, XSL-FO Debugger takes an XSL-FO file or a pair of XML and XSLT files as an input, follows XSL-FO formatting instructions and generates a PDF document as an output. The resulting PDF file may contain layers for displaying boxes (these are content box, allocation box, border box and padding box), baseline tables and breaks for the groups of FO objects and particular FO objects as well.
The XSL-FO specification can be very intricate when you are trying to find out whats wrong with this or that FO document. In fact, it is often not so easy to answer many tricky questions that arise when you create a document with a complex structure and thousands of objects. Why are these nested blocks not present on where they should be? What happened to that line? Where on earth is the header? Is it my error or I should send a letter to the producer of my formatter?
Xsl-Fo Debugger helps you to avoid spending precious time on re-calculating object parameters, re-reading specification and revising your code. It introduces the visual representation of all basic document areas, baseline tables and breaks generated by the formatter so that you can find irritating shortcomings as fast as possible.
What is even more convenient you may select the areas or baselines to be displayed. You may also change the color or opacity of displayed objects as it is described in the following sections. In addition, a separate PDF layer is created for each class of debugged objects, which makes your PDF document interactive and allows turning on/off the particular layers. This feature makes Xsl-Fo Debugger much more applicable and flexible tool. And here the time of your own fantasy and creativity begins!

The Hotbasic debugger will help you to debug your applications faster than ever without any adding of debug subs in you code, this is done by the debugger automatically.
No files in your source folders all sources handles within the debugger directory.
Hotbasic Debugger will set and remove breakpoints and run the program to the breakpoint, very good when debugging big applications.
Main features:
- Step by Step debugging
- Breakpoint debugging
- Live variable values
- Debugging in include files selectable
- Debugging of GUI and Console Applications
- Auto reloading of source file if source is changed
- Individial resizeble windows for each function
- Possibility to save window state in normal and in debug mode

RQ Debugger IDE is programmer editor for Rapid-Q Basic and FreeBasic programming languages.
Main features:
- multiwindow
- You can open 32 files and switch to one using "Windows" menu item.
- You can switch to last window (with saving cursors position) using "LastW" menu item.
- named bookmarks
- You can set 32 bookmarks in every window (opened file)
- You can "Add", "Delete", "Set", "Sort" bookmarks.
- You can switch to last bookmark using "LastBM" menu item.
- projects
- You can save list of windows and bookmarks as Project.
- When RQ Debugger IDE is running, it loads all Windows (and other settings) from last project.
- It automatically open last Window and set cursor to saved position.
- step-by-step debugger for Rapid-Q basic
- execute while value not equal..
- execute to cursor
- step-by-step execution
- objects treeView
- include files treeView
- syntax hilighting
- FreeBasic dll compilation
- sub list
- fileManager

GNU Visual Debugger 1.2.5 is considered as a professional, useful and extensible graphical debugger. The debugger has the capability to handle the syntax and peculiarities of several languages during the same session.

This includes native and cross debuggers (VxWorks, LynxOS, JVM, ...). Currently, the languages targeted are Ada, C and C++. Other languages can easily be added. The program allows handling of several debuggers (possibly different and on different hosts) at the same time.