Overview
Antispace (AIOS) is positioned as an “Artificially Intelligent Operating System” that unifies email, calendar, notes, todos, and other workspace tools into a single heads-up display (HUD). It provides personality-driven AI sidekicks that can take one-click actions across connected apps, perform semantic search over your inbox and notes, and proactively suggest the next best action using an “Advanced Memory” system and model selection. Users can create and customize AI personalities (Advanced Character Creation), share or keep them private, publish notes, and connect multiple accounts. The product emphasizes privacy (claims no user data is used to train external LLM providers, local storage for sensitive sources, and CASA Tier 2 certification mentioned) and is currently offered at no cost. The UX is gamified with a 3D HUD, achievements, and other visual elements designed to support long sessions and focus.
Key Features
AI Sidekicks & Character Creation
Create and deploy personality-driven AI agents; configure persona, memory, and behavior. Share characters with the Antispace community or keep them private.
AIOS Mail & Semantic Inbox Search
Integrated email client with semantic, indexed search and natural-language queries across inbox content; intent recognition and one-click actions.
Advanced Memory & Proactivity
A memory system that remembers user preferences and context to surface proactive suggestions and daily briefs based on cross-tool context.
Multi-account Support & Cross-app Actions
Connect multiple email/calendar accounts and execute coordinated actions across tools without context switching.
AIOS Notes & Publishable Notes
Semantically indexed markdown notes, with the ability to publish notes to the web/blog directly.
AIOS Developer Apps & Model Selection
Developer-facing AIOS Apps beta to build apps that integrate with the HUD; users can choose models (e.g., Claude) via chat commands and the platform dynamically selects the best model for each task.


Who Can Use This Tool?
- Knowledge Workers:Automate email, calendar, notes, and tasks to reduce context switching and decision fatigue.
- Creators & Researchers:Use semantic search, publishable notes, and memory-driven assistants to organize research and writing workflows.
- Developers & Builders:Build AIOS Apps and custom personalities, integrate tools via the developer beta and share characters with the community.
Pricing Plans
Completely free access with privacy-focused AI sidekicks and core features.
- ✓AI sidekicks with distinct personalities
- ✓Handles email, calendar, notes, todos, and search
- ✓One-click agent actions for tasks
- ✓Dynamic selection of the best AI model per task
- ✓Privacy secured — no data used to train external providers
- ✓No data selling; free for now
Pros & Cons
✓ Pros
- ✓Proactive, action-oriented automation across email, calendar, notes, and tasks
- ✓Customizable AI personalities (Advanced Character Creation) and sharable community creations
- ✓Semantic search and memory system for context-aware assistance
- ✓Privacy-forward claims (local storage of sensitive sources, no training of external LLMs, stated CASA Tier 2 certification)
- ✓Free access at present
- ✓Developer-facing features (AIOS Apps beta, GitHub presence)
✗ Cons
- ✗Several important site pages (pricing, docs, contact, some others) returned 404s during exploration — documentation and support appear incomplete
- ✗Limited third-party reviews and enterprise references publicly available yet
- ✗Potential user trust questions around privacy claims until independently verified
- ✗As an early-stage/rapidly evolving product, UI/UX and discoverability have received feedback suggesting room for improvement