The graphics-programming pipeline-analysis and debugging tool RenderDoc made it to version 1.0.
You can inspect the stages of your rendering, buffer contents, call stacks, etc. with visualizations. It is a valuable tool to get your rendering code right and improve it. Just start your Vulkan, D3D11, D3D12 or OpenGL application via RenderDoc, take a snapshot and start the investigation.
Check out the in-depth release notes on github.
Cool tools are out there to communicate your 3D models and scenes via web. There is an huge amount of things for 3D, VR, and AR collected on sketchfab. The number keys toggle details of the rendering and the scene. Here a nice demo of the current month: