Free memory access software for linux

Gnome Memory Blocks project is a concentration game for GNOME.

This is GNOMEs version of the `memory blocks game originaly come from Semantec game pack for Win-3.11

Memory Structures Library (MemSL) is a complete data structures/collection classes library with memory tracing, memory debugging, entry/exit tracing, exception handling, definable memory handlers, built-in thread support, and much more.

The project supports single, double, and circular linked lists, AVL balanced and threaded binary trees, dynamic hashing tables, stacks, queues and dequeues (using arrays or linked lists), sets (Pascal implementation, with union, difference, intersection, etc.), bags, tables and dictionaries, priority heaps, priority search queue, and more.

The Linux Memory Game project is a childrens (and adults) game based on the card game.
The Linux Memory Game is an X11 game using GTK+ library for children ages 3 and up. It is a lot more than the card game "Memory".
It has five skill levels, the higher ones are challenging to adults as well. Additionally, one can choose from the menu to match 2 cards or 3 cards, or match different cards.
This last "different card" mode can be a very good teaching tool for teaching languages, concepts, or association.
Main features:
- Extensible - add new images yourself without having to make changes to the program.
- Five skill levels appropriate for the youngest and the ones with the best brains.
- Can play two card matching or three card matching (more challenging!)
- Can set to match different cards. This can be used with apropriately designed pictures to teach children (or adults) words, concepts, or another language.
Enhancements:
- Fixed overflow bug in pixmaps_jump.

Guarded Memory Move project gets handy when you have to study buffer overflows and you need to catch them together with a "good" stack image. When a stack overflow has been exploited, the back trace is already gone together with good information about parameters and local variables, that are of vital importance when trying to understand how the attacker is trying to work out the exploit. The GMM library uses dynamic function call interception to catch the most common functions that are used by attackers to exploit stack buffers.
The GMM library uses the LD_PRELOAD capability and offers two services to the user. First of all, it avoids buffer overflow to allow the attacker to execute shell-code on your machine. Second, in case where an exploit is detected, the stack content is saved and a segmentation fault is triggered. The resulting core dump will then have all the necessary information to debug the exploit and fix the software. Internally, the library insert itself between the application and the glibc library and intercept functions that might lead to buffer overflow exploits. Before calling the glibc core function, the GMM layer saves part of the stack frame above the caller to a temporary location in its frame.
It also stores the previous three return addresses in its local storage before calling the glibc core function. When the core function returns, the GMM code samples again the previously recorded return addresses and, if they differ, it restores the previously saved stack frame and issue a segmentation fault. This with a clean stack frame, so that it can be inspected with a debugger. While other solutions exist to detect buffer overflow exploits, like for example StackGuard and StackShield, those differs from GMM in many ways. They live as gcc patches and do require you to rebuild your application to use their functionalities. The good of this approach is that every single function is protected against buffer overflows.
The bad of this solution is that every single function is protected against buffer overflows. That is, performance regression on the whole application, even if this is not really a huge problem when hunting for buffer overflows. Another solution similar to GMM is LibSafe, but it does not save and restore the stack frame by making it unusable for debugging. But lets see how GMM differs from the above listed solutions. First of all, GMM works everywhere there are stack frames and the gcc and glibc duo. That means that it is not limited to i386 only. And now the real reason for the GMM existence.
Enhancements:
- GCCs __builtin_return_address and __builtin_frame_address seems to return garbage instead of NULL at the last frame. This release fixes the problem.

Widget libraries have now been developed and used for years. In all these libraries, widget instances require computer memory. But this memory is not really required, We have implemented a widget library to prove that it is possible to use zero bytes of memory per widget.
In such a library, there is no widget reference, so widget programming is easier even in a low level language such as C. Programs are more robust because they do not use pointers, make no memory management and do not translate data between application and widget.
To set the attributes of a widget, it is not possible to use the widgets pointer so a current state is used as in OpenGL. Most classic widgets were integrated into the library, and it is possible to integrate widgets of all kinds without any problem.
This library license is the GNU GPL. Beware: it is alpha software. It works but the API is not yet stable.
Main features:
Base widgets:
- text, text_editable, int, int_editable,
- anchor,
- button, tearoff, button_with_accelerator,
- image, image_from_file,
- scrollbar2, scrollbar_vertical, scrollbar_horizontal,
- toggle (bit or int or char) with or without label. Same for radio button. Really easy to use.
Container widgets:
- window, window_drag, window_popup_right, window_popup_bottom
- anchor_box,
- box_horizontal, box_vertical, box,
- decorator,
- notebook,
- scrolledview (can contains billions of children)
- viewport
- table, table_with_width,
- void, if, popup : base system to make transient widgets. The menu are constructed with "popup"
Composite widgets:
- alert (container),
- message (container),
- filechooser,
Widget attributes:
- Choice of the focus group.
- Width: padding, border, focus
- Expand: vertical, horizontal
- Alignment: vertical, horizontal
- Font: family, size, weight, style
- Geometry: x, y, width, height
- Window auto resize
- Sensibility (to overide the value computed automaticaly)
- Debug level
Other features:
- a drag and drop working only inside the application.
- fully working text cut and paste (UTF8 or not).
- simple animation possible.
- the library runs a web server allowing to debug.
- accelerators. If a modifier key is pressed, a list of short-cut with this key is displayed in a bubble tip.
Enhancements:
- Complete rewrite of the kernel API, in order to have :
- The library can now be updated without recompiling external code

JavaSVN project is a pure Java Subversion client library. You would like to use JavaSVN when you need to access or modify Subversion repository from your Java application, be it a standalone program, plugin or web application.
Being a pure Java program, JavaSVN doesnt need any additional configuration or native binaries to work on any OS that runs Java. On this site you will also find instructions on how to make existing programs use JavaSVN instead of native javahl bindings.
Main features:
- No external binaries or libraries are needed to work with Subversion repository.
- JavaSVN supports http, https, svn and svn+ssh connection protocols.
- New: file protocol is supported in 1.1.0.beta2 version.
- Low level API allows effective direct Subversion repository access.
- JavaSVN is compatible with applications that already use native javahl bindings.

MySQL Squid Access Report, mysar for short, is a reporting system for user web traffic activity, as logged from a squid proxy.
MySAR consists of two parts:
- Command line utilities which import a squid log file in a MySQL database and maintain the databas.
- A web interface for accessing the reports.
Main features:
- Free. Licenced under the GPL, mysar is free for everyone to use.
- Dynamic. Forget about static reports that take ages to generate, hogging the systems CPU. Mysar is is the only squid reporting system with a database as its backend.
- Almost realtime. No longer do you have to wait for the next hour or day for the reports to be generated. All of the user activity is available to you when you want it. NOW.
- Portable. Written in pure PHP, mysar is available to any unix-based OS platform PHP supports, without any modification.
- Flexible. Since the code is open-source, you can customize it to your needs. Create you own reports as you see fit.
- Supported. Mysar project has a mailing-list, forum and an active maintainer.
- Stable. Utilizing mature and stable software like Smarty, MySQL and PHP, mysar is standing on the shoulders of giants.
- Easy. With a foolproof installation and a user-friendly web interface, mysar makes web traffic reporting easier than ever.
- Customizable. Mysar neednt be on the same server as squid or MySQL. If your load is too high, just load-balance your processes as you see fit.
Enhancements:
- This version added 64-bit support for the binary importer.