Sketch Cloud
Sketch Cloud is a service anyone can sign up for where they can view, download, and comment on Sketch documents which have been shared publicly, or privately straight from Sketch. Completely free.
Documents that have been uploaded to Sketch Cloud can either be viewed publicly — by anyone who has the link, or privately if the uploader has invited you to view the document via email.
Creating an account with Sketch Cloud is completely free, making it a perfect place for gathering feedback, and sharing your documents with all your colleagues. In order to upload documents to Sketch Cloud, you must have an active Sketch license. If you are using the trial version of Sketch, you will be able to upload your documents to Sketch Cloud during this period.
By signing up for a Sketch Cloud account, you agree to the Terms of Service. Sketch reserves the right to remove any objectionable content.