Free mdl molfiles software for linux

Universal Module Player or UModPlayer, is a audio module "tool-chain", providing you functions to work with modules like playing, exporting, getting information, and more.
Universal Module Player works in UNIX-like platforms, including Linux, Mac OS X, FreeBSD, Solaris...
It uses the Custom LibModPlug audio library, an improved version of the well-known LibModPlug library, supporting more than 20 formats and giving you high playing quality. It uses LibSDL to handle multiplatform sound support.
Main features:
- You can play the supported formats and seek to any order in the song. You have pause, timer, display, and other standard features.
- You can view the pattern notes while playing.
- You can specify noise reduction, megabass, surround, reverb sound options specifying the grade and the delay of most of the options.
- You can create, save and edit playlists to play a selection of modules.
- You can read and export to a file the song builtin message, the song instrument names and the song sample names.
- Each user of your UNIX box can save all the sound options.
- And much more!
Supported Formats
Supported file formats on both Little Endian (Intel x86, etc.) and Big Endian (PowerPC, SPARC, MIPS, Motorola 68000, etc.) platforms:
Impulse Tracker (IT), Scream Tracker (STM), Scream Tracker 3 (S3M), Extended Modules (XM), Amiga Modules (MOD), OktaMED (MED), Oktalyzer (OKT), Unreal Modules (UMX), Composer 669 (669), DigiBooster Pro Modules (DBM), PolyTracker (PTM), and Farandole (FAR)
Additional file formats supported only on Little Endian platforms (support for Big Endian is on development):
MultiTracker Modules (MTM), AFM, AMS, DMF, DSM, DigiTracker (MDL), MadTracker 2.0 (MT2), PSM, ULT
Exporting Formats
You can export or convert any of the above formats to the following file types:
Impulse Tracker (IT)
WAVE Audio File (WAV)
Audio Interchange File Format (AIFF)
Raw Pulse Code Modulation (PCM)
Enhancements:
- Buffer length fixes.
- Playlist commands were a pain. Now we use the first letter of the command name. Also, pressing ENTER does not quit, the user has to explicitly specify to quit pressing q
- Hopefully fixed AIFF exporting bug.
- New section in the README about LibAo configuration, and some misc. rearrangements.

SDL_sound is a library that handles the decoding of several popular sound file formats, such as .WAV and .MP3. It is meant to make the programmers sound playback tasks simpler. The programmer gives SDL_sound a filename, or feeds it data directly from one of many sources, and then reads the decoded waveform data back at her leisure.
If resource constraints are a concern, SDL_sound can process sound data in programmer-specified blocks. Alternately, SDL_sound can decode a whole sound file and hand back a single pointer to the whole waveform. SDL_sound can also handle sample rate, audio format, and channel conversion on-the-fly and behind-the-scenes, if the programmer desires.
As the name implies, SDL_sound is an add-on to Simple Directmedia Layer, and as such, youll need it to build and use SDL_sound. SDL gives us lots of convenience for porting and implementing some elements of the library, not to mention that it is a powerful, cross platform answer to DirectX. You should definitely look into it, whether you use SDL_sound or not.
Places SDL_sound is known to be used:
- The Ambient Music System uses SDL_sound in its player module.
- The popular game glTron uses SDL_sound for sound playback.
- Dominik Haumann wrote in to mention C++ wrappers for SDL_sound, which can be found here.
- MusicBox, a GNUstep music manager, uses SDL_sound to decode various audio formats.
- The SuSE Linux distribution has been know to package SDL_sound (at least version 0.1.5 has been spotted in the wild).
- Gentoo Linux distributes SDL_sound via their "portage" system. Just "emerge sdl-sound".
- FreeBSD has SDL_sound in their Ports tree: herere the details.
- NetBSD Appears to have packaged SDL_sound, too: details.
- Debian has packaged SDL_sound, too: details.
- ROCK Linux has an SDL_sound package: details.
- Probably other places. Email me if you want to be listed here.
What works:
- Support for "decoding" raw audio samples.
- Support for decoding Microsoft WAVE audio files (uncompressed and MS-ADPCM encoded waveforms are supported, currently) (.WAV).
- Support for decoding various MPEG audio files through SMPEG (.MP3, .MPG, .MPEG).
- Support for decoding MPEG-1 Layer 3 audio files internally (makes use of LGPLd code from mpg123.) (.MP3).
- Support for decoding MIDI music files (.MIDI, .MID).
- Support for decoding Ogg Vorbis audio files through libvorbis (.OGG).
- Support for decoding Speex voice files through libspeex (.SPX).
- Support for decoding FLAC audio files through libFLAC (.FLAC, .FLA).
- Support for decoding Creative Labs Voice files (.VOC).
- Support for decoding Audio Interchange File Format files (.AIFF).
- Support for decoding Shorten-compressed audio data (.SHN).
- Support for Suns audio format (.AU).
- Support for decoding through MikMod. (.MOD, .IT, .XM, .S3M, .MTM, .669, .STM, .ULT, .FAR, .MED, .AMF, .DSM, .IMF, .GDM, .STX, .OKT).
- Support for decoding through ModPlug. (.669, .AMF, .AMS, .DBM, .DMF, .DSM, .FAR, .IT, .MDL, .MED, .MOD, .MT2, .MTM, .OKT, .PTM, .PSM, .S3M, .STM, .ULT, .UMX, .XM)
- Experimental support for decoding through Apple Quicktime (MacOS only).
- Compiles/runs on Linux (x86 tested).
- Compiles/runs on Linux (x86-64 tested).
- Compiles/runs on Linux (PowerPC tested).
- Compiles/runs on FreeBSD (x86 tested).
- Compiles/runs on Win32 (x86 tested).
- Compiles/runs on MacOS Classic (PowerPC tested).
- Compiles/runs on MacOS X (PowerPC tested).
- Compiles/runs on BeOS (x86 tested).
- Compiles/runs on WinCE/PocketPC (StrongARM tested).
- May compile and run elsewhere with little to no modification. Success stories and patches are welcome.
What doesnt work:
- Support for more forms of compressed .WAV files is planned, but not yet implemented.
- Support for various forms of compressed .AIFF files is planned, but not yet implemented.
- Contributions of other ports are, of course, welcome.

XDrawChem is a two-dimensional molecule drawing program for Unix operating systems. XDrawChem is similar in functionality to other molecule drawing programs such as ChemDraw (TM, CambridgeSoft).
It can read and write MDL Molfiles, and read ChemDraw text and binary files, to allow sharing between XDrawChem and other chemistry applications, and it can create images in popular formats like PNG and EPS. XDrawChem has been tested on Linux, SGI IRIX 6.5, Sun Solaris, Mac OS X, and Windows.
Main features:
- 100% compatible Windows 95/98/NT version
- Fixed length, fixed angle drawing.
- Automatic alignment of figures. Detects structures, text, and arrows and places them automatically.
- Can automatically draw rings and other structures - has all standard amino acids and nucleic acids in built-in library.
- Can retrieve structures from a network database based on CAS number, formula, or name.
- Can draw symbols such as partial charge, radicals, etc.
- Can read MDL Molfiles, CML [Chemical Markup Language, defined in J. Chem. Inf. Comput. Sci.39(1999), 928-942], ChemDraw(TM) binary format, ChemDraw(TM) XML text format.
- Can write MDL Molfiles, CML, ChemDraw(TM) XML text format.
- Can also read and write any format supported by the current release of OpenBabel.
- Can export pictures in PNG, Windows bitmap (*.bmp), Encapsulated PostScript (EPS), and Scalable Vector Graphics (SVG).
- Can generate 3-D structures with the help of the external program BUILD3D.
- Online help, including tool tips.
- 13C-NMR prediction, based on Bremser W, Mag. Res. Chem.23(4):271-275
- 1H-NMR prediction, based on additive rules and functional group lookup methods, described in Pretsch, Clerc, Seibl, Simon, "Tables of Spectral Data for Structure Determination of Organic Compounds", 2ed., 1989, Springer-Verlag
- Simple IR prediction.
- Simple pKa estimation.
- Octanol-water partition coefficient estimation.
- Reaction analysis: gas-phase enthalpy change estimate, 1H NMR and 13C NMR comparison.
- Integration with OpenBabel, allowing XDrawChem to read and write over 20 different chemical file formats.

BKchem is a free chemical drawing program. BKchem was concieved and written by Beda Kosata.
BKchem is written in Python, an interpreted and very nice programming language.
Main features:
Drawing
- bond-by-bond drawing
- bond lenght and angle restrictions to assist with the drawing
- ready to use templates of common rings
- ability to expand common groups from abbreviated to structural form
- radicals, charges...
- arrows
- rich text
- color support
- simple vector graphics (rectangles, circles, polygons etc.)
Editing
- unlimited undo and redo capabilities
- aligning
- scaling
- rotation (2D, 3D)
- aligning of molecules so that particular bond is horizontal/vertical
- rotation of molecular fragments around bonds (conformation changes)
- definition of personal preferred drawing style (bond lenghts, widths, colors...)
Export
- full export to SVG (native data are transparently embedded into SVG file)
- full export to OpenOffice Draw format
- full export to Encapsulated PostScript
- basic support for both CML1 and CML2
- Molfiles
- generation of SMILES
Import
- basic support for both CML1 and CML2
- Molfiles
- SMILES (subset)
- INChI (subset)
Other features
- localization support (currently English, French, Czech and Polish translations are available)
- native format is XML based
- validity checking of drawn structures
Whats New in 0.11.6 Stable Release:
- In this release, two major bugs were fixed: one in the German translation (causing a crash when a file was saved) and one in the OpenOffice export plugin.
- A few other minor bugs were also fixed.
Whats New in 0.12.0_02 Development Release:
- This release fixes several bugs, most importantly incompatibility with Python 2.5.