Highly electrically conductive and optically transparent thin films were fabricated on conventional glass substrates using different purified carbon nanotubes, single-wall (SWNT), double-wall (DWNT), and multi-wall (MWNT) carbon nanotubes. The starting carbon nanotube materials were first made into homogenous solution with either sodium cholate or dimethylformamide. Two different fabrication approaches, airbrushing and membrane filtration methods, were used and compared. The chemical modification of thionyl chloride was employed to further improve the optical and electric performance of the SWNT films. Additionally, the temperature dependence of the resistance measured on carbon nanotube networks has been investigated.