Open Source Complement to PDF?

nodvin asks: "Is there an Open Source alternative to PDF files? In the late 80's and early 90's I was building and distributing documents in a competing format called DigitaPaper by a company called Common Ground. DigitalPaper was a nice format and more cost effective than Adobe Acrobat. Common Ground seems to have lost out to Adobe (marketing muscle can be more important than the capabilities or qualities of competing products) and the company, or at least the product and format, seems to have been acquired by Hummingbird. Hummingbird is no longer providing any support for the product but is still providing the DigitalPaper viewer and there is a free Common Ground Internet Edition. Perhaps Hummingbird could be convinced to Open Source the code to Common Ground as well as the format of DigitalPaper?"

Comments

Try Ghostscript

[Anonymous Coward]

Ghostscript is an open-source implementation of PostScript and PDF. I use it rather than Acrobat for producing PDFs. (I still use Acrobat Reader for viewing them, though, simply because I prefer its interface over Ghostscript's viewer, Ghostview.) You can find it at http://www.cs.wisc.edu/~ghost.

Re:Try Ghostscript

[Matts]

I do wish pillars of the community would read the documentation before making posts like this ;-)

Ghostscript's ps2pdf output format uses Flate compression where requests for LZW compression are made. This is in the documentation, and is that way because of the patent problems.

GS's ps2pdf generally produces pdf files around the same size as (or only slightly larger than) Acrobat's Distiller.

Re:Try Ghostscript

[Bruce Perens]

It's nice that Ghostscript can both write and render PDF. It's too bad that PDF compression uses LZW and Ghostscript avoids compressing PDFs because of the Welch (Unisys) patent. So, your PDFs come out a lot bigger than with Acrobat. Alas.

Bruce