Otio

Otio is presented as a tool to help users with internet research, acting as a "personal librarian." The website primarily serves as a login/signup portal.

No common features found

Otio is described as a "personal librarian for the internet" and "the fastest way to do research." While this broadly aligns with the concept of organizing web resources, the provided website content is extremely minimal and does not offer any specific details about features like URL saving, previewing, list organization, notes, or sharing. It primarily focuses on sign-up/login. Therefore, there is insufficient evidence to confirm any of the specified features.