Mosio's Text a Librarian
Text a Librarian is a very simple to understand product. Anyone that has ever used text messaging for any purpose will be able to figure out how this works. Patrons are able to ask questions via text to your Ask a Librarian service. The librarian end is all web-based. Librarians receive in requests and respond via the secure Text a Librarian account where there are also able to manage questions and perform other simple admin functions.
If you've been thinking about adding a texting option to your suite of tools/access points for your Ask a Librarian service you will definitely want to learn more about this product.