Built by StackWynd · Your second brain, powered by AI
Remember everything you read online.
Save any link. Get instant AI summaries. Search everything. Chat with your knowledge. Omnidex turns your bookmarks into a searchable, intelligent second brain.
- Content types supported
- ∞
- Average processing time
- <2s
- Vector embeddings per item
- 384-d
- AI providers supported
- 3
How it works
Three steps to a smarter you
No learning curve. Drop a link. Let AI handle the rest.
Save any link
Paste a URL, use the bookmarklet, share from your phone, or import your X bookmarks. Articles, videos, PDFs, posts — Omnidex handles everything.
AI processes it instantly
Omnidex extracts the content, generates a summary, assigns categories and tags, detects difficulty level, estimates reading time, and creates searchable embeddings.
Search & chat with your knowledge
Find anything in milliseconds with hybrid search. Or ask questions in plain English — Omnidex gives you cited answers drawn from everything you've saved.
Features
Everything you need.
Nothing you don't.
AI Summaries
Every link gets a concise AI summary, auto-tags, difficulty rating, and reading time estimate.
Hybrid Search
Full-text and semantic vector search. Find anything by keyword or meaning. ⌘K from anywhere.
Chat with Your Knowledge
Ask questions, get cited answers from your saved content. Supports Claude, GPT, and Gemini.
Collections
Curate content into drag-to-reorder collections. Like playlists for knowledge.
Annotations
Add rich-text notes to any item. Capture your thoughts alongside the original content.
Smart Categories
AI assigns categories automatically. Create your own with custom colors and icons.
Save from Anywhere
Desktop, bookmarklet, iPhone share sheet, Android — add content however you prefer.
X Bookmarks Import
Connect your X account and import all your bookmarks in one click. Duplicates are skipped automatically.
Secure & Private
Your own isolated workspace. MFA, IP allowlists, session management, encrypted at rest.
More capabilities
Notifications
Know when items finish processing or go stale.
Analytics
Track growth, types, and contributor activity.
Export
Download your knowledge base as clean Markdown files.
Staleness Alerts
Auto-detect when saved content changes or disappears.
Multi-platform
Save from any device, any app
Whether you're on your laptop, phone, or tablet — Omnidex makes it effortless to capture knowledge on the go.
- Browser bookmarklet — one-click save
- iOS & Android — native share sheet
- Import all your X bookmarks
- Articles, videos, PDFs, posts
- Article
React Performance Tips
- Video
System Design Interview
- PDF
ML Research Paper.pdf
- Post
Thread on AI safety
Start building your second brain
Capture, organize, and recall everything you learn — with answers you can trace back to the source.