History++ Browser Extension

What it does

Imagine if you could search through everything you’ve seen on your browser: not just the public websites available on Google, but also your private web documents and notes, internal business sites, or even chats with AI bots. Imagine if you could save all that information privately and locally, without worrying about who else sees it or how much it costs.
That is what we are creating: a private, personalized search engine for everything a person has seen in their web browser. It is a browser extension with search, history, and chat.
Our application features: semantic search over previously observed text, AI chat, powered by Gemini, with search results as context, as well as screen captures to make results more recognizable. In addition, users can block URLs they don’t want remembered. Best of all, everything stored is local on the device: screen captures are saved to OPFS, embeddings are created with ONNX models, and text and vectors are saved in the browser using a WASM SQL vector database. Our combination of ONNX models and Vector DB provide KNN search results over tens of millions of words in under a second, translating to years of browsing history. Did we mention this is all local on-device? That means both private and with zero cloud costs.
For the Chat feature which rounds it all out, we currently use text-to-text models. Users can select from the Gemini API or the Ollama API for local inference. Once available, we will shift to using Gemini Nano as the default model.