ChemViz3D vs PraxiLabs

ChemViz3D is a free browser-based 3D molecular animation tool for chemistry teaching. Students can rotate, pause, and zoom around atoms and bonds in real-time scenes, while a keyframe editor creates custom reaction animations. Animations can be shared by link and viewed without installing software. ChemViz3D converts.chemx or.json animation files into Blender-ready Python scripts. Its molecule toolkit, built with RDKit.js, supports structure analysis, visualization, and SVG or MOL downloads. An image-to-SMILES workflow accepts uploads, pasted screenshots, and image URLs, with.smi and.mol export. The product describes using PubChem PUG-REST and NCI/CADD services for molecular data and structure resolution. It is used in UTS chemistry courses. Individual students, learners, and educators receive the free plan at free with no sign-up required. The full interactive player requires WebGL and a modern desktop browser is recommended.

PraxiLabs provides virtual science labs and educational content for learners and education providers. Its simulations cover biology, chemistry, and physics, with more than 220 available in the Semester and Annual plans. Learners interact with experiments in 3D, can repeat them, track progress, and receive immediate feedback. Oxi, described as a virtual science lab partner, provides personalized guidance during simulations. The platform also includes multiple-choice quizzes and assessments, reports, and analytics. Individual subscriptions are limited to one user: the Free Plan gives one month of access to three simulations, while the Monthly Plan provides any 10 simulations. Semester and Annual plans include access to all 220-plus simulations. The School plan lists Moodle, Blackboard, and other LMS integrations, plus a built-in mini-LMS; Teacher and University plans are also offered by quote. PraxiLabs runs online in a modern browser on a computer or laptop, with no installation required. The Free Plan costs nothing, the Monthly Plan $6.99 a month, the Semester Plan $29.99 a month, and the Annual Plan $44.99 a year.