  We present an open-source CUDA-based package that consists of a compilation
of exponential integrators where the action of the matrix exponential or the
$\varphi_l$ functions on a vector is approximated using the method of
polynomial interpolation at Leja points. Using a couple of test examples on an
NVIDIA A100 GPU, we show that one can achieve significant speedups using CUDA
over the corresponding CPU code. LeXInt, written in a modular format,
facilitates easy integration into any existing software package, and can be
used for temporal integration of any differential equation.
