An interactive, WebGPU-accelerated simulation of Large-Scale Structure (LSS) evolution. The software utilizes a "2.5D" Universe approach, projecting a thin slice of a 3D universe onto a 2D plane, to visualize the formation of cosmic filaments and voids from z = 10 to the present via a live web interface. It combines analytical 2LPT with a local quasi-N-body gravity scheme, incorporating rigorous background expansion and structure growth for LCDM and w0-wa dark energy models. To maintain smooth interactivity with up to 200k tracers, particle interactions are computed locally and include a phenomenological adhesion model. The tool features two distinct modes: a cosmological sandbox with realistic initial conditions and an "enhanced BAO" mode designed to highlight the emergence of Baryon Acoustic Oscillation signals. Optimized for high-performance browser rendering (WebGL/WebGPU), it is designed for professional scientific presentations, classroom teaching, and public outreach.

An interactive, browser-based tool for exploring gravitational lensing phenomena. The software implements rigorous mass models, including point-mass, NFW halos, elliptical halos, and cosmic void profiles, allowing users to visualize lensed images and critical curves in real-time via a live web interface. While the physics is strictly grounded in these models, the lensing effects are purposefully exaggerated to highlight phenomenological features for educational clarity. It is designed for professional presentations, scientific outreach, and teaching.