Needle

Needle positions itself as a knowledge threading platform, which means it sits between your scattered data sources and makes them all searchable and actionable from one place. You connect it to tools like Google Drive, Slack, Notion, Confluence, Jira, and others, and it builds a unified search layer on top. When you search or ask a question, it pulls relevant information from any connected source.

For developers, the RAG API is the main draw. You can build AI-powered applications that retrieve and reference your company data in real time. This is useful for internal tools, customer support bots, or any application where answers need to come from your actual documents rather than a general-purpose model. The API handles the retrieval and context assembly so you can focus on the application logic.

Needle also includes workflow automation features that let you set up triggers and actions across connected tools. For example, you could automatically summarize new documents, route information to the right Slack channel, or generate reports from data spread across multiple platforms. The free tier is generous enough to test with real data before scaling up.