Modes Features Comparison

	Standalone mode	CLI mode	Server mode	Full Server mode
Common Usage	Graphical Desktop OS	Batch scripts	Personal server & NAS	Internet server
Client Technology	Swing	IO standard streams	SmartGWT	SmartGWT
Server Technology	N/A	N/A	NanoHTTPd web server	Jetty web server + H2 database
Memory Requirement	Normal	Very Low	Low	Low to Extreme
Java minimal requirement	JRE 8 Full	JRE 8 lite	JRE 8 lite	JRE 8 lite
User Security	N/A	N/A	NO	YES Encrypted login and communication
FS access protection	NO	NO	NO	YES including shared folder writeable (or not) depending on user rights
Multi‑User	NO	NO	NO	YES
Multi‑Account	YES	YES	NO	YES
Multi‑Threading	YES	YES	YES	YES
WebSocket	N/A	N/A	YES	NO
Long Polling Request	N/A	N/A	YES	YES
HTTP technology	N/A	N/A	HTTP/1.1	HTTP/1.1 + HTTPS/1.1 with TLS 1.3 + HTTPS/2 with TLS 1.2

Side Notes

WebSocket is not very reliable over proxies and with slow networks, so it is not implemented on Full Server... Long Polling Request has to be used instead, furthermore HTTP/2 is performing very well to circumvent requests round trip overhead
Multi-Account means that each user (system users for non server modes) will have its own working dir and settings
Multi-User means that one instance can handle multiple different users at the same time without conflict
FS access protection means that no user will have access to folders elsewhere than the ones defined starting from the base working path, if NO, then user will have access to the entire FileSystem based upon the jrommanager process current user's rights