Chemical structure drawing tool. No-fee option for academic and non-commercial use, but registration required to download. Formerly Accelrys (ISIS/Draw).
Free structure/reaction drawing editor from ChemAxon. Structure editor supporting multiple file formats, for Windows, Mac and Linux. Marvin JS is one of the editor options in Reaxys, along with ChemDraw JS.
Chemaxon offers a 1-year free academic research license key, in exchange for contributions like social media posts, citing the product in posters, and completing user surveys.
