The New Ghostscript PDF Interpreter

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  • wuffs

    Wrangling Untrusted File Formats Safely

  • yalsat

    yalsat by Armin Biere, improved to add support for large problems

    Code from yalsat (stochastic SAT solver) [1] made me learn something two years ago. I can declare an array of some elements and make access to elements statically typed. Same with maps, sets and others.


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  • Klib

    A standalone and lightweight C library

    Code reuse is achievable by (mis)using the preprocessor system. It is possible to build a somewhat usable API, even for intrusive data structures. (eg. the linux kernel and klib[1])

    I do agree that generics are required for modern programming, but for some, the cost of complexity of modern languages (compared to C) and the importance of compatibility seem to outweigh the benefits.


  • qpdf

    Primary QPDF source code and documentation

    There are some here, as test files in the qpdf library:

    (I wrote a low-level PDF parser and ran it over the PDF files that happened to be present on my laptop—just regular ones—and ran into some files that (some) PDF viewers open but even qpdf doesn't. I say "even" because qpdf is really good IMO.)

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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