Free logo software for linux

Logo++ project is a simple Logo-like interpreter.

It draws graphical figures by following very simple instructions.

Though it lacks many essential features of "serious" programming languages, it remains a funny start for beginners in computer programming, particularly for kids.

XLogo is known to work successfully with LINUX (Debian, Mandrake 9.*, SUSE 8.2)
XLogo is a Logo interpreter written in Java. This program is therefore free as in freedom and free as in beer.
Logo is a language developed in the 70s by Seymour Papert. It is an excellent language to begin learning programming with, and teaches the basics of things like loops, tests, procedures, etc.
The user is able to move an object called a "turtle" around the screen using commands as simple as forward, back, right, and so on. At each move, the turtle leaves a trail behind it, and it is therefore possible to create drawings. Operations on lists and words are also possible.
For example, forward 100 right 90 will make the turtle move 100 steps forward, and then turn the turtle 90° to the right.
This graphical approach makes Logo an ideal language for beginners, and especially easy for children!
Enhancements:
- Several bugs were fixed.

The KLogo-Turtle is an interpreter of the LOGO language for KDE desktops.
The KLogo-Turtle is a useful tool for teaching geometry and the basic principles of the programming of computer. Children can study the mathematics of geometry in an interactive and constructive way.
KLogo-Turtle has syntax a little different than the LOGO language developed at MIT. Look at the documents link. Comments, doubts and suggestions, please use the e-mail link.
KLogo-Turtle supports commands in the languages english, portuguese, german, italian and french.
KLogo-Turtle is under the GPL license and is developed in KDevelop by Euclides Chuma.
Enhancements:
- Release version stable (0.6) with support for commands in english, portuguese, german, italian and french.

Php Logo Interpreter project is a logo language interpreter.

This package implements an interpreter of the Logo programming language.

It implements almost all features of the Logo programming language, including procedure definition, recursion call, etc..

The output of the execution of logo programs is rendered on an image resource that can be outputted in any supported by the PHP GD extension.

FONTpage is a Python font viewing and image-generating utility. It displays system fonts and allows you to change the font size and color, background color, font face, bold, and italics.
It also has the ability to input the text to be displayed, which you can choose to save as a PNG file. It is handy to view fonts and styles quickly, or to make "logo" graphics.
It was written to supersede wxFontView, as the pyGTK toolkit is much lighter and more widely used.
Enhancements:
- New "Display Font" feature opens popup window with complete alphabet (upper and lower case) and 0-9.
- Window shows current font with current size -- use multiple windows to compare different fonts.
- Font size now scales up to 256 pts (was 128)
- Config file will now track last window dimensions when the application is restarted.
- If user font directory directory (~/.fonts) does not exist, FONTpage will create one. This is to facilitate installing and deleting fonts, which FONTpage will only do on a per-user basis. (This is to avoid problems.)

Source Navigator NG is a source code analysis tool. With Source Navigator NG, you can edit your source code, display relationships between classes and functions and members, and display call trees.
Enhancements:
- (INTERNAL) update TODO file
- (ENHANCE) Highlight grep pattern when using format strings/regexps in greppane
- (INTERNAL) Add the possible new SN logo V
- (INTERNAL) Add the possible new SN logo IV
- (INTERNAL) Add the possible new SN logo III
- (INTERNAL) Add the possible new SN logo II
- (INTERNAL) Add the possible new SN logo
- (INTERNAL) Update TODO to list removal of -fwritable-strings compiler switch
- (BUGFIX) Allow for configure-generated french.txt, german.txt, part II
- (BUGFIX) Allow for configure-generated french.txt, german.txt
- (BUGFIX) Fix german language strings
- (DOCS) Change copyright msg and display GPL notice for french, japanese, german
- (DOCS) Change copyright msg and display GPL notice
- (INTERNAL) Move snavigator/MAINTAINERS to root of sourcetree and update
- (INTERNAL) Add Bart van Rompaey to CONTRIBUTORS
- (BUGFIX) Fix undefined references to assert() when building db/ with DEBUG
- (INTERNAL) Change version ID to NG1 and regenerate configure
- (BUGFIX) Fix xref-generation when using batch mode
- (BUGFIX) Fix double declaration of optarg that prevented compilation under Win32 for dbimp
- (BUGFIX) Fix multiple declarations of getopt() in hyper that prevented compilati on under Win32
- (INTERNAL) Add CONTRIBUTORS file
- (BUGFIX) Fix building tcl library on Win32
- (ENHANCE) Make sure an iconized windows shows its according project name
- (BUGFIX) Fix prev & next buttons in diff-dialog
- (BUFIX) Fix arrow navigation in grep dialog (greppane)
- (ENHANCE) Better integration of Clearcase into SN
- (INTERNAL) Add docs about wanted toplevel svn commit msg format
- (BUGFIX) Remove diplaying of copyright msg when refreshing project
- (INTERNAL) Bugfix the splashscreen installing
- (ENHANCE) Randomly choose splashscreen + shorten splashscreen time
- (INTERNAL) Rename camelCaps ChangeLog to CHANGELOG
- (BUGFIX) Install text file COPYING as 644, not 755
- (INTERNAL) Remove Makefile and other configure auto-generated files from SVN
- (ENHANCE) Pretty up splash screen
- (DOCS) Add TODO file to list top-level goals
- (BUGFIX) enlarge default db caches
- (BUGFIX) fix scrolling in greppane (grep dialog)

lafontaine project is a graphical logo interpreter.
It was made for educational use.
Main features:
- the interface is easy to apprehend,
- there is a specific Logo language version for each country,
- Lafontaine is highly portable (by using the gtk library)