Delta is an open source Electron app (initially started as a Next.js app) that enables a straightforward UX for conversation branching with language models. Conversation branch means rewinding a conversation to a previous response then continuing in another direction by sending a different message to the model. While this UX is supported by most LLM chat providers via an edit mechanism, what is different about Delta is that it provides a visual representation of conversation branches and makes it easy to navigate between them.
The interface is composed primarily of a chat and canvas. There is also a tracked list of past conversations.
The tool supports multiple model providers, image inputs (for models that support them) and models served by an ollama server.
I also wrote more about conversation branching and why I think this approach is useful here.
Tech: Electron, Electron Forge, Vercel AI SDK, Ollama