JsPlumb, the JavaScript library for building visual connectivity interfaces, has released a major update with a modernized API and new diagram/2D chart engines. The project is now free for non-commercial use, with packages available for React, Angular, Vue, Svelte, and vanilla JS on the public NPM registry.
Datasette Apps is a new plugin that lets users host custom HTML+JavaScript apps inside Datasette in a sandboxed iframe with a Content Security Policy. The apps can run read-only SQL queries and optionally write data via stored queries. The feature supports AI-assisted creation through copyable prompts for LLMs.
Simon Willison released an alpha package, micropython-wasm, that runs MicroPython code inside a WebAssembly sandbox via wasmtime. It enforces memory/CPU limits, restricts file and network access, and supports persistent state and host functions for safely executing untrusted code in Python applications.
Simon Willison created a GitHub repository that converts Mozilla's browser-compat-data into a ~66MB SQLite database, using an AI-generated script and GitHub Actions to build and host the database on an orphan branch with open CORS headers for easy access via Datasette Lite.
Simon Willison released llm-coding-agent 0.1a0, an experimental coding agent built on his LLM library. The agent provides tools for reading, editing, searching files and executing commands, and ships with a Python API and CLI. It was developed using Claude Code (Fable 5) via TDD with a spec-first approach, and is available as a slop-alpha on PyPI.
Datasette 1.0a35 has been released, introducing a new "Create table" interface and JSON API, an "Alter table" feature with table modification capabilities, and official documentation for template context variables as a stable API for custom templates until version 2.0.