Short for “content sphere”, Csphere.io is a bookmark management application and browser extension that allows users to easily save, search, and organize the web content they consume.

• Save different forms of web content (e.g. articles, blogs, documentation)
• Add context via notes, descriptions, and custom keyword tags
• Organize content using a custom folder structure managed through Csphere’s backend UI
• Semantically search your content by meaning, time saved, or source
  (e.g. “Which articles have I read about jet engines this past month?”)
• Cross-platform access across browsers and mobile devices

Note: This project uses uv for Python dependency and virtual environment management. All Python commands below assume uv is installed and active.

cd backend
uv venv
source .venv/bin/activate  # Windows: .venv\Scripts\activate
uv pip install -r requirements.txt
uvicorn app.api.main:app --reload

cd frontend
npm install
npm run dev

1. Open chrome://extensions
2. Enable Developer Mode
3. Click Load Unpacked
4. Select the chrome_extension/ folder

uv pip install alembic

alembic init

Set sqlalchemy.url to your PostgreSQL connection string.

from app.db.base import Base
target_metadata = Base.metadata

alembic revision --autogenerate -m "create users table"

alembic upgrade head

alembic downgrade -1

The problem we identified is for someone who parses thousands of pages of web content daily and experiences trouble locating where this content was consumed, be it on a Chrome or Firefox browser. The user possibly has thousands of web pages already saved in their bookmarks folders and are looking for a more intelligent and context-rich search and storage over their content.

Install this if you are tired of having thousands of tabs open on your browser, debating if they should be saved with your important bookmarks or not. With Csphere you centralize and take control over the content you consume while organizing your desktop.

Csphere is pronounced as "see-sphere".

Visit Csphere.io and download the extension to start using Csphere.

Yes, Csphere is 100% free to use.