Notion is a popular project management tool that positions itself as an “all-in-one workspace.” It wasn’t originally built to manage relationships, it was built to manage your work projects, but almost all aspects of work will require some form of outreach or collaboration with other people, and to manage relationships with those people you may need to take notes and keep to-do lists, so using a project management tool to manage your network makes sense. Notion has spreadsheet functionality like Airtable or Excel, along with user friendly features for taking meeting notes.