Software

• ygraph 0.15
  • Homepage of ygraph (currently not available)
  • Source
  • binaries are not any longer provided here. You can easily get them for a lot of architechtures as Debian package from here or from the homepage.
• pngtc2pngp
  • This is a small program written to convert png images from true color RGBA png-format to palette RGBA png format. The emphasis here is on RGBA, real partial alpha support on palettes. Gimp and a lot of other free programs surprisingly failed to do the job.
    You can specify a palette to do the conversion, but pngtc2pngp can also generate a new 'optimal' to the image. About the palette file: this has to be a text file containing rows of 4 (or 3) columns. The first three have to be integers, otherwise that line is not taken into account. If the fourth is present and an integer, it is the alpha value for that color, otherwise the alpha value is taken to be 255 (fully opaque). Gimp can produce such files, however Gimp uses the fourth column as name for the color, but you can choose '0' as name to get an fully transparent color.
    pngtc2pngp can be distributed under the GPL.
  • Source for version 0.5