One API

PageIndex is an open-source, reasoning-based document indexing and retrieval framework by VectifyAI. It builds hierarchical tree indices (table-of-contents style) for long documents and uses LLM-driven tree search to perform relevance-first retrieval—no vector DB and no artificial chunking. Designed for professional long-document QA and analysis, PageIndex emphasizes explainability, traceability, and human-like navigation.

Supermemory is a memory engine and application that provides a fast, scalable Memory API for saving, organizing, and retrieving personal or team knowledge. It supports adding content from URLs, files, and text, enables conversational access to stored memories, and integrates with major AI tools and browser extensions.

Supermemory is a high-performance, scalable memory engine and web app that acts as an AI “second brain”. It provides a Memory API and user-facing apps/extensions to save content (links, PDFs, text), perform semantic retrieval, and chat with your saved memories. It integrates with major AI tools via an MCP layer, offers browser and Raycast extensions, developer console and self-hosting options for enterprise deployment.