With the rapid growth of computer technology, the application of the Tamil language has expanded globally. Overcoming the early limitations of 8-bit ASCII encoding systems, the introduction of 16-bit encoding standards such as Unicode and TACE16 has enabled the seamless use of Tamil characters across all computer and mobile platforms. This paper comprehensively examines the historical evolution of Tamil printing and typing systems to its modern spread across emails, blogs, online dictionaries, digital libraries, and social media. Furthermore, it evaluates the technical advancements achieved in modern Natural Language Processing (NLP) domains, including spell checkers, morphological analyzers, syntactic treebanks, Tamil Optical Character Recognition (OCR), speech technologies (TTS & Speech Recognition), and Artificial Intelligence-driven e-governance chatbots. This study highlights how the Tamil language maintains sustainability and international stature in the digital era through contributions from the International Forum for Information Technology in Tamil (INFITT) and various research organizations.