NetworkAI is an AI tool that helps users expand their LinkedIn network faster and easier. It offers a three-step process that includes adding user information, using AI to write a custom LinkedIn introduction message, and starting to network by clicking on the LinkedIn button. The tool has received positive feedback from users who find it helpful in building their resume, boosting their confidence in job applications, and creating accurate bullet points for their work experience. NetworkAI offers a free trial with 10 free tokens for generating custom introduction messages.