When comparing PAC Manager vs Remmina, the Slant community recommends Remmina for most people. In the question“What are the best SSH clients for UNIX-like systems?” Remmina is ranked 8th while PAC Manager is ranked 10th. The most important reason people chose Remmina is:
It's easy and fast to find what you want, nice for daily use.
Ranked in these QuestionsQuestion Ranking
Pros
Pro PAC is pretty simple and does its job of collecting and managing a list of connections that can be quicly used to connect to some machine through SSH
Pro Straightforward user interface
It's easy and fast to find what you want, nice for daily use.
Pro Supports multiple remote desktop protocols
Remmina supports a number of protocols for accessing remote desktops - RDP, SSH, XDMCP, NX, and SPICE.
Pro You can manually adjust the quality of connection
To more effectively manage the available bandwidth, you can change the speed of your connection. This lets you sacrifice some of the quality of multimedia in favor of more speed.
Pro All connections are organized in groups
All connection profiles can be neatly organized into groups, making managing a large of machines simple.
Cons
Con The developer officially abandoned the project
Early in 2017 the developer announced that he had no interest in continuing to develop it. Not a single line of code has been added or improved since then,
Con Heavily dependent on long-forgotten libraries
PAC Manager draws its underlying terminal functions from the Perl libraries written to interface with GNOME Terminal, circa...2006. The libraries have been untouched for at least five or six years, and just recently have begun to be removed from major distribution repositories like Debian and Ubuntu. It's a chore to get them installed and will only continue to get harder.
Con The tool has problems with blocking focus on its window, so sometimes it's hard to quickly switch to another one
Con No RDP server, only client
Remmina is only a remote client (VNC, RDP). It has no server features.