Management of connections of multiple servers (RDP, SSH)

Hi all,

In fact, I'm switching from Windows to a Debian / Ubuntu desktop system and now I'm looking for an application that manages all the connections on my server. In Win and Mac I used "Royal TS", which was awesome software for managing RDP and SSH connections. Unfortunately, they do not provide a version of Linux. So this is the reason why I am looking for an alternative to Linux.

So far I only found 2 applications that are not the best for different reasons.

Remmina

+ Works very fast
+ Easy to use
– Fewer possible configurations
– There is no synchronization of connections of multiple users (synchronize a connection file, or use mysql, so that the administration of connections can use the list of connections in multiple clients)
– Freeses sometimes
– There is no KeePass integration
– No opacity in terminal connections.
– There is no alignment of multiple windows (align the windows of all connected servers to see them all at once)
– No multiple command function (sending command to a group of servers)

Asbru Connection Manager
+ Many configuration options
+ Possible terminal opacity
+ KeePass integration
+ Multiple command function (send command to a group of servers)
+ Alignment of multiple windows (aligns the windows of all the connected servers to see them all at once)

– It freezes very often (too often)
– KeePass DB import causes freezing
– Keepass DB without encrypting open
– There is no synchronization of connections of multiple users (synchronize a connection file, or use mysql, so that the administration of connections can use the list of connections in multiple clients)

Does anyone know other connection manager applications (paid or open source does not matter) that are similar to "Royal TS"?

Or how to effectively manage your multiple server connections? Maybe there is another approach that I'm not thinking about.

Thank you