  We present an open-source software framework for parameter-space exploration,
named OACIS, which is useful to manage vast amount of simulation jobs and
results in a systematic way. Recent development of high-performance computers
enabled us to explore parameter spaces comprehensively, however, in such cases,
manual management of the workflow is practically impossible. OACIS is developed
aiming at reducing the cost of these repetitive tasks when conducting
simulations by automating job submissions and data management. In this article,
an overview of OACIS as well as a getting started guide are presented.
