The Quantum Spectral Curve (QSC) is a powerful integrability-based formalism capable of computing the non-perturbative spectrum of planar N=4 SYM. The success and utility of QSC motivate trying to extend it beyond N=4 to other instances of the AdS/CFT correspondence where integrability is expected to be present. This has been successfully accomplished for AdS4/CFT3 and a curve has been conjectured for AdS3/CFT2. I will review the basics of the QSC framework in the well-understood AdS5 case and then turn to low-dimensional versions of the QSC. I will discuss the conjectured curve for AdS3 and how it differs from previous iterations of the QSC. Furthermore, I will discuss recent perturbative results with a peculiar structure.