Observable - Interactive code examples/posts
GitHub Codespaces - GItHub Codespaces is a hosted remote coding environment by GitHub based on Visual Studio Codespaces integrated directly for GitHub.
TextSTAT - TextSTAT is a simple programme for the analysis of texts.
CloudShell - Cloud Shell is a free admin machine with browser-based command-line access for managing your infrastructure and applications on Google Cloud Platform.
Nodebook - Browser-based REPL notebook supporting many programming languages.
CodeTasty - CodeTasty is a programming platform for developers in the cloud.