GPL Ghostscript

If you're looking for a software package that offers a whole host of functionality to aid in document handling and conversion, Ghostscript is an excellent choice. Its capabilities include an interpreter for the PostScript (TM) language, which allows you to view and print files on printers that don't have this language built in. Additionally, it can convert PostScript files to multiple raster formats.

Ghostscript also provides an interpreter for Portable Document Format (PDF) files. This feature allows you to view and print PDF files with ease, regardless of the platform you're using. Moreover, its PDF-to-PostScript conversion capabilities (with some limitations) are quite valuable.

Finally, the Ghostscript library offers powerful graphics and filtering functionality. These operations appear as primitive operations in the PostScript language and in PDF. Ghostscript is written entirely in C, with special attention paid to ensuring its compatibility with a wide range of systems. This includes Apple Mac OS X, MS Windows, Unix and Unix-like platforms, and VMS systems.

Overall, Ghostscript is a great choice for anyone looking for software to ease document handling and conversion. Its versatility and ease of use make it a valuable tool for professionals and amateurs alike.