The development of research methodology in any scientific field is closely tied to technological advancements that allow for deeper and more sophisticated data analysis. To help readers understanding the scope of current lexical availability research, this chapter provides a description of the tools and research resources specifically developed for the collection and calculation of semantic fluency data in lexical availability studies from the 1990s to the present. In addition to incorporating a detailed account of each tool and its functionalities, it includes a brief review of research that has employed them in the context of second or foreign languages. Thus, the chapter offers the reader a comprehensive historical-methodological overview of the research line. [For the complete volume, "Lexicon Exploration in English and Spanish Learners. Educational Linguistics. Volume 67," see ED676344.]