Free extremely powerful software for linux

jNetStream is a protocol analyzer and a sniffer. A set of applications and complete Java library are provided with a comprehensive API.
Hundreds of protocols have been defined, and the list can be expanded with a simple NPL language. It is appropriate for custom protocol development, grad students, and network teachers/professors.
Supplied applications provide all of the common functionality you may expect from a packet sniffer:
*) slydecoder - a packet decoder that is extremely flexible.
-> group packets by flows (-g option).
i.e. TCP stream will be grouped into a flow
-> you have the option to supply your own protocol definitions
-> decode multiple files at once
-> decode different types of capture files at once
-> most powerful filter engine available
*) slycopy - capture (or trace) file manipulator
-> merge multiple capture files into single output file
-> merge multiple capture files even if they are of different types
-> apply filters during the manipulation
-> In the future you will be able to modify packets during copy
(i.e. remove a specific header from packets such as decapsulate VLANs)
*) Also you can execute both of these applications using java runtime
environment like this:
-> java -jar JNetStream.jar
com.voytechs.jnetstream.tools.SlyDecoder
-> java -jar JNetStream.jar
com.voytechs.jnetstream.tools.SlyCopy
Or shorthand for SlyDecoder using the default main class:
-> java -jar JNetStream.jar
Note: /opt/jnetstream directory is the default installation directory, if you install JNetStream into a different directory adjust the base dir name appropriately.
Enhancements:
- This release introduces a number of new features and bugfixes.
- NPL protocol definitions are now only loaded on demand and allow user-definable binding overrides.
- New packet counting options have been added which run under several different models, including a statistical model.
- Packets can be counted in very large, multi-gig files quickly.
- Lots of logging (Apache CommonsLogging and Log4j) has been added.

Particle Reality is an extremely versatile Java particle engine, based on the ideas of the excellent commercial particle animation software Particle Illusion by wondertouch.

Particle Reality allows you to define all aspects of particle and particle emitter behavior over their entire lifetime in XML, allowing for a very flexible particle system.

The flat assembler is a fast and efficient self-assembling 80x86 assembler for DOS, Windows, and Linux operating systems. Currently, it supports all 8086-80486/Pentium instructions with MMX, SSE, SSE2, SSE3, and 3DNow! extensions.
It can produce output in binary, MZ, PE, COFF, or ELF format. Flat Assembler includes the powerful but easy-to-use macroinstruction support, and does multiple passes to optimize the instruction codes for size. The flat assembler is entirely written in assembly language.
Enhancements:
- 32-bit relocations are now allowed in PE64 output format.
- EIP-relative addressing was added.
- The PLT operator was added for the ELF output format.
- SSSE3 (Supplemental SSE3) instructions were added.
- Some Win64 headers and examples were provided in the Windows package.
- The SYSRETQ mnemonic was added, and RDMSRQ/WRMSRQ/SYSEXITQ mnemonics were added for the 64-bit variants of respective instructions.
- R8L-R15L (Intel-style) aliases were added for R8B-R15B registers. Support for the AMD SVM technology instructions was added. Numerous bugs were fixed.

Network Traffic Analyser provides a script-driven network traffic monitor.

Network Traffic Analyser (formerly known as sniffer) is designed to be an extremely powerful, configurable, and versatile tool for monitoring network traffic.

It can be used as a plain sniffer, as a tool for accounting, dynamic firewall updates, and many more things.

It features scripting support and an event-driven architecture.

The idea behind this project is to create a powerful tool for playing around with network traffic. The basic concepts are simplicity and flexibility. Instead of building tool that does something specific (and does a good job at it), were trying to build a tool that will be able to do whatever you want it to do (and still be good at it :).

To put it very simply, you write a script that will be invoked for every packet that passes through your network. You write your scripts in a Tcl, fully blown, interpreted programming language. That fact guaranties that you wont be constrained in your creativity.

TalkSoup is a fully configurable graphical IRC client for both GNUstep and Mac OS X.

Its simplistic interface is made extremely powerful by the fact that all parts of the IRC client are implemented as runtime-loaded plugins, so additional plugins can be made to further extend TalkSoup.

TalkSoup supports a tabbed interface, DCC file transfer, and most common features found in other IRC clients.

The GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. The Gimp works on many operating systems, in many languages.
GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.
GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.
GIMP is written and developed under X11 on UNIX platforms.
Main features:
Painting
- Full suite of painting tools including Brush, Pencil, Airbrush, Clone, etc.
- Sub-pixel sampling for all paint tools for high quality anti-aliasing
- Extremely powerful gradient editor and blend tool
- Supports custom brushes and patterns
System
- Tile based memory management so image size is limited only by available disk space
- Virtually unlimited number of images open at one time
Advanced Manipulation
- Full alpha channel support
- Layers and channels
- Multiple Undo/Redo (limited only by diskspace)
- Editable text layers
- Transformation tools including rotate, scale, shear and flip
- Selection tools including rectangle, ellipse, free, fuzzy and intelligent
- Advanced path tool doing bezier and polygonal selections.
- Transformable paths, transformable selections.
- Quickmask to paint a selection.
Extensible
- A Procedural Database for calling internal GIMP functions from external programs as in Script-fu
- Advanced scripting capabilities (Scheme, Python, Perl)
- Plug-ins which allow for the easy addition of new file formats and new effect filters
- Over 100 plug-ins already available
Animation
- Load and save animations in a convenient frame-as-layer format
- MNG support
- Frame Navigator (in GAP, the GIMP Animation Package)
- Onion Skin (in GAP, the GIMP Animation Package)
- Bluebox (in GAP, the GIMP Animation Package)
File Handling
- File formats supported include bmp, gif, jpeg, mng, pcx, pdf, png, ps, psd, svg, tiff, tga, xpm, and many others
- Load, display, convert, save to many file formats
- SVG path import/export

YourKit Java Profiler is a CPU and memory profiler that makes it easy to solve wide range of CPU- and memory-related performance problems.
YourKit Java Profiler features automatic leak detection, powerful tools for the analysis of memory distribution, an object heap browser, comprehensive memory tests as part of your JUnit testing process, extremely low profiling overhead, transparent deobfu
YourKit, LLC is a new technology leader, creator of the most innovative and intelligent tool for profiling Java applications. The YourKit Java Profiler has been already recognized by the IT professionals and analysts as the best profiling tool for Java.
With YourKit Java Profiler, both CPU and memory profiling have come to the highest professional level, where one can profile even huge applications with maximum productivity and zero overhead.
There are several, recent innovations to profiling that have gained well-deserved popularity among professional Java developers, both in big and small companies.
YourKit Java Profiler is a new leap in the evolution of profiling tools!
Main features:
General:
- On demand profiling
- Easiest installation and configuration
- Unlimited profiling for one fee
- Full, complete J2EE support
- Ability to profile in production environment
- Full Java 5.0 support
- Rich multiplatform support
- Robust profiler API
- IDE integration
- Filters in CPU and memory views
- Customizable user interface
- Easy way to connect to locally running applications
- Ability to export profiling results to HTML
- Remote profiling
CPU profiling:
- Two methods of CPU profiling: sampling and tracing
- CPU hot spots and method invocation trees
- Unique "Merged callees" view
- Method back traces view
- "Thread" and "wall" times
- Method "own time", that excludes time spent in called methods
- General snapshot info and deobfuscator configuration
Memory profiling:
- Unique comprehensive Objects view
- Easy way to browse instances of particular class
- "Find Paths" helps to find reasons of memory leaks
- Find strings that match given pattern
- Optional recording of object allocations
- "Quick Info" action
- Ability to compare memory snapshots
- Unique descriptive language for memory analysis
- General snapshot info and deobfuscator configuration
- Automated comprehensive memory test
NOTE: THIS IS PREVIEW SOFTWARE AIMED AT PROVIDING YOU WITH AN OPPORTUNITY TO TEST THE NEWEST FEATURES SCHEDULED FOR THE NEXT MAJOR RELEASE. YourKit, LLC DOES NOT GUARANTEE THAT THIS SOFTWARE WILL RUN TROUBLE-FREE. USING THIS SOFTWARE IS AT YOUR OWN DISCRETION AND DOES NOT ENTITLE YOU TO ANY CUSTOMER SUPPORT.
Enhancements:
- Navigation to source code is now implemented in the NetBeans 6-milestone1 IDE.
- Several bugs were fixed in Eclipse integration and the profiler agent.