This work consists on the creation of a tool named BioProvider to provide data to BLAST. The tool provides the data using buffer management techniques that are efficient for BLAST and controls process scheduling. The communication between BioProvider and the BLAST processes, as well as the concurrency and blocking control, is done through a device driver that substitutes the read and write function calls to the database files. By this means, the application code can remain unchanged and BioProvider can be used with different versions of BLAST. The development of BioProvider was the first stage to the creation of a solution that can be applied as well to other Bioinformatics tools. Due to its transparency in the view of other applications, BioProvider can be easily extended in the future to provide data to other applications, to use other buffer management techniques or to provide data stored in different formats of those read by the client processes, converting the data in runtime. BioProvider has been tested with the most recent version of NCBI BLAST and considerable improvement has been verified. The tool has been shown to work as well with the open source version of WU-BLAST. Some variations on the buffer management algorithm were studied, as well as the different factors that influence the performance of BLAST processes.