electrobun

Mastra gives TypeScript developers one framework for model access, autonomous agents, graph-based workflows, and AI application development. It can integrate with React, Next.js, and Node or run as a standalone server, supporting a path from prototypes to deployed products through a common interface for many model providers. Most of the core uses Apache 2.0, but enterprise features under `ee/` require a commercial license for production.

Eclipse Theia is a framework for teams building their own developer tools or cloud IDEs, rather than a single fixed editor. It can be composed into browser-based or desktop applications, offers a flexible extension architecture, and supports the VS Code extension protocol. The project also documents application composition, Theia extensions, VS Code-style extensions, and desktop packaging.

Nextron combines Next.js and Electron so developers can create desktop applications using familiar React and web-development workflows. It supplies project conventions, development commands, and packaging through electron-builder, with configuration for application metadata, resources, output, and platform targets. ESM projects are supported, but packaging still follows host-platform constraints—for example, macOS binaries must be built on macOS.

Inspect is an evaluation framework created by the UK AI Security Institute for testing large language models. It includes components for prompt construction, tool use, multi-turn dialogue, and model-graded evaluation, plus more than 200 pre-built evaluations. Researchers can compose these capabilities into tasks and extend the framework through Python packages that add new elicitation or scoring techniques.