TeXML is an XML vocabulary for TeX. The processor transforms the TeXML markup into the TeX markup, escaping special and out-of-encoding characters. The intended audience is developers who automatically generate [La]TeX or ConTeXt files.
pyascii85 is a Python extension written in C, that provides Ascii85 data encodings, also known as Base85. It can encode and decode files or text buffers, and is useful for encoding data to be used within PostScript and PDF files, such as raw RGB images.