I spend a lot of time building in open source. Here are some of the more popular ones.
Toolkit turn your scripts into full blown apps. No HTML or CSS required
A CSV importer flow for React projects
An open source mock JSON API to bootstrap your frontend projects
Light Bulb is a tool to help you label, train, test and deploy machine learning models without any coding.
Torch Transforms Builder
Visualize what torchvision transforms look like without having to write scripts.