TMD phenomenology: from HERMES and COMPASS to JLAB and EIC Alexei Prokudin JLab I will discuss the spin structure of the proton in terms of Transverse Momentum Dependent (TMD) distributions. At leading twist there are 8 transverse momentum dependent distribution functions that describe the structure of the polarised spin-1/2 hadron. Intrinsic transverse motion of quarks is important for understanding both polarised and unpolarised Semi Inclusive Deep Inelastic Scattering (SIDIS) data. I will present recent experimental data from HERMES and COMPASS collaborations and extraction of transversity, Boer-Mulders, Collins, and Sivers functions and comparison to models. Future JLab and EIC measurements will be discussed.