ltl2dstar (”LTL to deterministic Streett and Rabin automata”) is a program that converts formulas in Linear Time Logic to deterministic ω-automata, specifically Rabin (DRA) and Streett automata (DSA). It is an implementation of Safra’s construction to translate nondeterministic Büchi automata (NBA) to deterministic Rabin automata, which has a worst-case complexity of 2O(n log n), with n being the number of states in the NBA. ltl2dstar employs optimizations and heuristics in an attempt to generate smaller automata in practice. It uses external LTL-to-Büchi translators for the conversion from LTL to NBA and can thus benefit from the state-of-the-art algorithms, implementations and optimizations available in this well researched area.