SecondMindOS by SecondMindOS
Turn scattered AI chats and sources into a private, searchable workspace you can organize, verify, and reuse.
Some features may require paymentSome features may require payment
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About this extension
Your best AI work should not disappear into old tabs and disconnected chat histories. SecondMindOS turns the conversations and sources you choose into an organized knowledge workspace that stays useful after the chat ends.
Capture supported AI conversations alongside webpages, PDFs, local files, and read-only API sources. SecondMindOS keeps the original source attached so you can verify where an answer or decision came from.
Use SecondMindOS to:
SecondMindOS is useful for research, planning, product work, client projects, writing, study, and any workflow that spans more than one AI conversation. It helps you resume work with the evidence, decisions, and open questions already connected instead of rebuilding context from memory.
Start without an account. Local workflows keep saved workspace data in your browser profile and can use Ollama or your own supported AI-provider key. Configured paid services can add authenticated cloud synchronization, passphrase-encrypted backups, managed AI, and automatic synthesis. Availability depends on account entitlement, provider setup, and service configuration. Hosted sync uses encrypted connections, provider encryption at rest, and account access controls; backup contents receive separate on-device encryption before upload.
SecondMindOS does not sell your data or use saved workspace content to train AI models. Data is sent only when you choose a hosted feature, cloud AI provider, or configured integration. Connections require explicit setup, and actions that send information elsewhere remain reviewable.
Privacy policy: https://secondmindos.app/privacy
Capture supported AI conversations alongside webpages, PDFs, local files, and read-only API sources. SecondMindOS keeps the original source attached so you can verify where an answer or decision came from.
Use SecondMindOS to:
- Find saved work across AI tools from one searchable library.
- Group related context into workspaces, projects, and chat threads.
- Reopen the original webpage, file, or AI conversation from its source card.
- Review source-linked summaries, insights, decisions, next actions, and visuals.
- Ask questions across only the workspace, project, or thread you select.
- Create your own reusable containers for the information that matters to your workflow.
- Export a chat thread, project, or complete workspace as portable Markdown.
- For supported connectors that you configure, preview and approve changes before information is sent elsewhere.
SecondMindOS is useful for research, planning, product work, client projects, writing, study, and any workflow that spans more than one AI conversation. It helps you resume work with the evidence, decisions, and open questions already connected instead of rebuilding context from memory.
Start without an account. Local workflows keep saved workspace data in your browser profile and can use Ollama or your own supported AI-provider key. Configured paid services can add authenticated cloud synchronization, passphrase-encrypted backups, managed AI, and automatic synthesis. Availability depends on account entitlement, provider setup, and service configuration. Hosted sync uses encrypted connections, provider encryption at rest, and account access controls; backup contents receive separate on-device encryption before upload.
SecondMindOS does not sell your data or use saved workspace content to train AI models. Data is sent only when you choose a hosted feature, cloud AI provider, or configured integration. Connections require explicit setup, and actions that send information elsewhere remain reviewable.
Privacy policy: https://secondmindos.app/privacy
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Permissions and data
Required permissions:
- Exchange messages with programs other than Firefox
- Download files and read and modify the browser’s download history
- Access your data for chatgpt.com
- Access your data for chat.openai.com
- Access your data for claude.ai
- Access your data for gemini.google.com
- Access your data for grok.com
- Access your data for x.com
- Access your data for perplexity.ai
- Access your data for www.perplexity.ai
- Access your data for localhost:3000
- Access your data for 127.0.0.1:3000
- Access your data for secondmindos.app
Optional permissions:
- Access your data for chatgpt.com
- Access your data for chat.openai.com
- Access your data for claude.ai
- Access your data for gemini.google.com
- Access your data for grok.com
- Access your data for x.com
- Access your data for perplexity.ai
- Access your data for www.perplexity.ai
- Access your data for api.notion.com
- Access your data for api.openai.com
- Access your data for api.anthropic.com
- Access your data for api.x.ai
- Access your data for generativelanguage.googleapis.com
- Access your data for localhost
- Access your data for 127.0.0.1
- Access your data for localhost:3000
- Access your data for secondmindos.app
Required data collection, according to the developer:
- Authentication information
- Browsing activity
- Personal communications
- Website content
Optional data collection, according to the developer:
- Technical and interaction data
More information
- Add-on Links
- Version
- 0.1.17
- Size
- 5.63 MB
- Last updated
- 14 hours ago (Nov 4, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection