T2S - T2S app offers features through which you can open a pdf file to listen to it in your favorite language without much of a stretch.
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Text to Speech (MP3 download) - Text to Speech (MP3 download) app offers features that let you create files in mp3 format by entering files in the text format.
Typora - A minimal Markdown reading & writing app.
Text Reader: Text to Voice - Text Reader: Text to Voice is an educational app that allows users to listen to their favorite eBooks text files, documents, and letters in the voice of a large number of narrators and various accents from around the globe.
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.