> ## Documentation Index > Fetch the complete documentation index at: https://docs.onyx.app/llms.txt > Use this file to discover all available pages before exploring further. # Connectors > Ingest knowledge from connected applications [Click here to see a full list of all supported connectors.](/admins/connectors/overview#supported-connectors) Connectors ## What are Connectors? Onyx uses Connectors to build an understanding of your documents, team, and higher level concepts so that answers are grounded and specific to your organization's knowledge. Connectors: * Keep all updates synced between external systems and Onyx. * Pull in metadata and additional signals to ensure answer relevance. * Respect all user permissions (Enterprise Edition only). ## Common Connector Questions Click this card to see the full list of supported connectors. You can also push documents directly into Onyx via [API](/developers/guides/index_files_ingestion_api) or via File Upload. All processing and storage of documents and metadata happen within Onyx. There are options to use LLMs or third party providers during the indexing flow but by default everything is processing entirely locally. Click this card to see more about security. In the same way LLMs are pre-trained on massive amounts of internet data, Onyx builds an understanding of all of the documents, concepts, and people within your organization. This allows Onyx to provide more accurate answer to questions that relate to internal knowledge compared to using the applications' provided search APIs at query time. Click this card to learn more about Internal Search in Onyx.