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Icon CACTVS Tools is a visualization package for chemist. Features:

  • A full-featured 2D structure editor (csed),
  • A 2D structure browser (csbr),
  • An Image viewer, which can also compute GIF images from connectivity alone (csimg),
  • A multi-spectra viewer (NMR, IR, UV/VIS, MS), especially usefil for spectra found on the WWW (csir),
  • An NMR viewer with rather restricted capabilities,
  • An structure data access/download tool for Chemical MIME files on the WWW (cswa),
  • A WWW structure database access client (csws),
  • An XY grapher for numeric information attached to structure datasets,
  • A client for a database of computed NMR shieldings (cssharc),
  • A GUI-less basic client which can for example be used for computation services on the internet (via dedicated ports or as CGI program) and for command-line function testing (csts).

Current Version:   1.7.0 (3.0 expected in a few months)

License Type:   Free for non-commercial (private, academic) or internal use.

Home Site:

Source Code Availability:   C Sources of Core Library --- Not generally, only for collaborators; Tck/Tk Code --- Yes.

Available Binary Packages:

  • Debian Package:   No
  • RedHat RPM Package:   No
  • Other Packages:   Yes (with easy installation script)

Targeted Platforms:

Currently Linux, SunOS, Solaris, IRIX. Next release includes HPUX and maybe WindowsNT.

Software/Hardware Requirements:

ELF support, newer C runtime library (exact required version is unknown, but problems with really old releases were obvserved). Some software features require running portmapper for rpc support. Other features use Internet connections for distributed processing or data access via http/ftp etc.

Other Links: (FTP site)

Mailing Lists/USENET News Groups:


User Comments:

  • "I must congratulate you with an impressive system (CACTVS) and a very nice molecule structure editor! At least the molecular editor will be used in our group from now. We have been considering buying commercial software for the purpose of drawing mol. structures, but that need is eliminated by csed." ..... Oyvind

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