If you need a private knowledge base for personal organization and project management, choose Obsidian. It offers a high degree of customization through plugins and themes, and its local storage ensures your data is kept private. However, be prepared for a learning curve and remember that it lacks built-in AI capabilities, making it less suitable for real-time collaboration or if you prefer cloud solutions.
On the other hand, if you're focused on automating online tasks using AI, go with browser-use. This tool excels for AI developers and automation enthusiasts due to its stealth browsing capabilities and custom LLMs. Keep in mind that there are costs associated with extensive use and it's limited to web-based tasks, so it’s not the best option if you need straightforward browsing or want extensive customer support.