Source Tamil Sans currently exists as a set of supplementary files to demonstrate some basic project setup parameters for a typical Tamil font project. One of the first important considerations in beginning such a project is to define the scope of the project. The GlyphOrderAndAliasDB is a document that lists all of the glyphs that will go into a final Tamil font. This document is in two column, tab delimited format with the final glyph names in the first column, followed by the production glyph names in the second. There is also a corresponding family.fea document, which defines the OpenType features for the glyph set outlined by the GOADB.
While we hope that this project will someday become a full-fledged typeface family, this is not currently in active development. However, should you like to help this become a reality, or if you have questions about these resources, please contact the project developer [Paul D. Hunt](mailto:opensourcefonts@adobe.com?subject=[GitHub] Source Tamil Sans), for consideration.
For information about the design and background of the parent project, Source Sans Pro, please refer to the official font readme file.