Following are some of the features that Attachments Expert provide:
Attachment of any size can be uploaded through Attachments.expert
Users can upload attachment using drag and drop
Upload multiple attachments with ease
Upload large files with ease, with pause and resume features
File integrity check on file uploaded (checks if uploaded file is not corrupted)
File versioning
Search Attachments
Organize Attachments in folders in the storage based on record to which Attachment is being attached
Add your own custom fields on Attachment records
Configure and display custom fields for Attachments
Multiple Storage Servers can be used to store attachments
Salesforce users can run Salesforce reports on Attachments
Chatter can be used on Attachment records
Attachments can be tagged and searched
Upload Cleaner option is provided to delete partially uploaded files in order to avoid unnecessary space utilization on Storage Server.