Yes, LeadGrabber is capable of putting online contact lists into a spreadsheet. It figures out the format of most lists and has strong junk removal algorithms to accurately identify name, company and other contact details. Use the "Extract Contacts in List" option in the dropdown next to the Grab button to try this.
The Internet also has thousands of formats of lists and directories and LeadGrabber may make a few mistakes. If you want 100% accuracy of list building with a particular membership website/association website/web directory/online directory, you may order a Custom Extraction Driver for the site. We will make the custom macro for you and install it for your licenses. Minimum customization charges are $500. Charges will vary based on website complexity. Please contact our sales for more details.