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The Upload Documents Tab is really nice. Get this if you need to use Documents in Lightning.
The Attach Files button is disappointing.
Badly laid out
Spelling errors (including in help documents). Fixed in latest version
But has Convert Attachments to Files button
Shows Attachments and Files
No Preview of Attachments
Only opens file record, not preview
Prominent Delete link
Doesn’t play nicely with Console apps.
There is a Quick Upload button also
Not particularly useful
Upload Content Tab
Bug - said I need Chrome when using Chrome
Shows ALL files no matter who they are attached to. Weird.
No way to actually use the content. A bit useless.
Configurations
OMG It has Comic Sans Font - this should be outlawed!
Not quite sure what this is for - to create a button for uploading an attachment or file.
Could be useful as there is no way to upload attachments via the UI anymore. But I don’t want to use this app, as it’s a bit horrible.
I can only partially recommend. Useful for converting attachments to files though.
Drag, Drop, and Upload Salesforce Files
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I use this in one of my orgs and it just works well.
No Names - that can be a feature if you don’t need it
Auto Rotation through the images
Drag and Drop by Cloud Analogy
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000000q5DvEAI
I can’t even look, it looks terrible
Drag n Drop attachments with Dragger
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000000q5DvEAI
It doesn’t look like lightning
Salesforce File Manager
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000FR5UoUAL
I don’t want to even look.
Upload Guru
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N30000000q6MkEAI
I refuse to look because it has vertical nav.
File Explorer
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000EOJPlUAP
I refuse to look at it because it’s only in Classic.