Inorganic chemistry
Shapes of molecules-VSEPR
https://www.chemtube3d.com/category/a-level/shapes-of-molecules-vsepr/
Bioinorganic chemistry, solid state, s, p, d and f block elements, metal organic frameworks
https://www.chemtube3d.com/category/inorganic-chemistry/
Group theory (symmetry elements and symmetry operations)
https://symotter.org/tutorial/intro
https://www.chemtube3d.com/category/structure-and-bonding/symmetry/
Transition metals (Co-ordination compounds and inorganic reaction mechanism)-3D animations/models
https://www.chemtube3d.com/tm-pointgroupspolyhedralstructures/
https://www.chemtube3d.com/tm-distortedpolyhedra/
https://www.chemtube3d.com/tm-octdistortions/
https://www.chemtube3d.com/tm-berrypseudorotation/
https://www.chemtube3d.com/tm-innersphere/
https://www.chemtube3d.com/tm-electrontransferoutersphere/
https://www.chemtube3d.com/tm-jahntellerdistortioncuf64/
https://www.chemtube3d.com/tm-bentsandwichcompounds/
https://www.chemtube3d.com/_ru_en_3_2_enant/
https://www.chemtube3d.com/tm-ligandsubstitution/
Ligand substitution (square planar complex)
https://www.chemtube3d.com/tm-cistrans/
Organometallic Chemistry
https://www.chemtube3d.com/category/structure-and-bonding/organometallics-metal-ligand-bonding/
Organic Chemistry
3D animations for understanding the mechanism of organic transformations- (all types of reactions covered)
https://www.chemtube3d.com/category/a-level/organic-reaction-mechanisms/
Physical chemistry
Polymer chemistry
https://www.chemtube3d.com/category/polymers
Quantum chemistry
https://phet.colorado.edu/en/simulations/filter?subjects=quantum&sort=alpha&view=grid
Spectroscopy (Rotational, UV-Vis, Vibrational)
https://www.chemtube3d.com/category/structure-and-bonding/spectroscopy/
Instruments
NMR
https://www.chemtube3d.com/category/a-level/proton-nmr-introduction/
https://www.nmrdb.org/new_predictor/index.shtml?v=v2.121.0
http://www.cheminfo.org/Spectra/NMR/Peak_picking/2D_peak_picking/index.html
Interactive spectroscopy problems set
http://www.chem.ucalgary.ca/courses/351/WebContent/spectroscopy/index.html
IR
https://zenodo.org/record/3483623#.YCoOCGgzZPY
GC
https://www.stevenabbott.co.uk/practical-chromatography/GCSim.php
Chemistry Free Softwares and Visualizers
GChemPaint (works on linux OS only)