
Boa Constructor
RAD Tool for Python and WxWindows
CLAM Prototyper
Runs an audio processing core under a QT designer interface

MyGUI FontViewer
MyGUI FontViewer

FLUID
FLTK GUI Designer

Glade
Create or open user interface designs for GTK+ applications
Lazarus (1.4.0)
Lazarus IDE (1.4.0)
Lazarus (2.0.0)
Lazarus IDE (2.0.0)

SPE (Stani's Python Editor)
Integrated Python Development Environment

wxFormBuilder
wxWidgets GUI Designer
Mausgrapher
Mouse click graphing tool
Gorm Interface Builder
[GNUstep | Graphical] Object Relationship Modeller
NTK CHTHEME
NTK GUI Theme Chooser
Lazarus (1.6.2)
Lazarus IDE (1.6.2)
Lazarus (1.6)
Lazarus IDE (1.6)
Plasma Theme Explorer
Explore and edit your Plasma themes
Lazarus (1.8.0)
Lazarus IDE (1.8.0)

MyGUI ImageSetViewer
MyGUI ImageSetViewer
NTK FLUID
NTK GUI Designer
Yadex
Doom level editor
Lazarus (1.8.4)
Lazarus IDE (1.8.4)
Lazarus (1.8.2)
Lazarus IDE (1.8.2)
Lazarus (1.4.4)
Lazarus IDE (1.4.4)

MyGUI LayoutEditor
MyGUI LayoutEditor

Lazarus (2.0.6)
Lazarus IDE (2.0.6)
pgAdmin 4
Management tool for PostgreSQL
Kirigami Gallery
Shows examples of Kirigami components and allows you to play with them

KUIViewer
A quick viewer for Qt Designer UI File