Ofek is an open source tool that uses AI to create personalized daily news briefings in English and Chinese. It collects stories from sources like RSS feeds, Reddit, Hacker News, and GitHub, then filters and removes duplicates based on rules you choose. It can add summaries, background and community discussions, and deliver briefings via email, WeChat or other channels. This helps readers stay up-to-date on their interests without having to check multiple sources themselves.