Ontar Corporation is a research and development company specializing in the development of products for atmospheric remote sensing. Over the past two decades, Ontar has been the leading supplier of software for meteorological applications in remote sensing, radiative transport and atmospheric propagation. Ontar's complete line of software for modeling of varying weather conditions includes the MS Windows-based PcModWin, PcLnWin, HitranPC, E-Trans, NVTherm, IICCD, IIMRC and SSCAM software, as well as JavaHAWKS, a HITRAN database manipulator. This paper will describe both the updates to the existing products and the new products recently released to the user community. Ontar has been continuing its efforts to enhance its product capabilities in atmospheric modeling. Recent enhancements include the addition of new functionalities and the incorporation of new models into existing software such as PcModWin and PcLnWin. This paper will discuss these new added models and functionalities in detail. It will also demonstrate how these enhancements improve the atmospheric modeling in remote sensing applications.