There are open-source software projects that offer similar functionalities to commercial products.
Once the calculation is complete, use the menu to view: Molecular Orbitals : Visualize HOMO and LUMO surfaces. Spectra : View calculated IR, NMR, and UV/vis spectra.
If the full version is too expensive, consider these official or open-source options:
Wavefunction Inc. is known for developing computational chemistry software, and Spartan is one of their notable products. Spartan is a software package used for molecular modeling and computational chemistry. It allows users to construct, manipulate, and analyze molecular models. The software is widely used in educational and research institutions for teaching and research purposes in chemistry and related fields.