Elephas

Elephas is a Mac-native personal knowledge assistant for knowledge workers, researchers, consultants, lawyers, writers, and students who need fast answers from their own documents and notes.

Key capabilities include:

• Super Brains (multiple knowledge bases): Import and organize information from 20+ formats such as PDFs, Word/Pages, Excel/CSV, Markdown, code files, plus web pages, YouTube, voice notes, and Zoom transcripts, then query everything with semantic search.
• SuperChat and agentic mode: Chat with a selected Brain to get grounded answers with source citations to the original files, and run multi-step tasks.
• System-wide Mac assistant (Super Command): Invoke the assistant via a keyboard shortcut in any Mac app to summarize, rewrite, translate, and draft content (email, documents, formulas, and more).
• Integrations and sync: Auto-sync with Apple Notes, Notion, Obsidian, DEVONthink, Bear, Roam Research; use on Mac, iPhone, and iPad, with optional iCloud sync.

Pricing: Freemium (free version available with a free Pro trial; paid plans available).

Notable for combining a native Mac + iOS experience, offline mode with local storage, and privacy controls (including no training on user data) while keeping answers verifiable through file-level citations.