TurboRVB is an open-source computational package for ab initio Quantum Monte Carlo (QMC) simulations of both molecular and bulk electronic systems. The code was initially launched by Sandro Sorella and Michele Casula in SISSA and has been continuously developed by many contributors for over 20 years. The code implements two types of well established QMC algorithms: Variational Monte Carlo (VMC), and Diffusion Monte Carlo in its robust and efficient lattice regularized variant (LRDMC).