mRemoteNG is described as 'Fork of mRemote , an open source, tabbed, multi-protocol, remote connections manager' and is a very popular Remote Desktop tool in the network & admin category. There are more than 50 alternatives to mRemoteNG for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best mRemoteNG alternative is MobaXterm, which is free. Other great apps like mRemoteNG are Remmina, Tabby, ReTerminal and Royal TSX.
ISL Light is a web-based remote desktop solution that lets you access and control any Windows, Mac or Linux computer in seconds from any computer or mobile device or to provide ad hoc technical support to mobile device users.
mRemoteNC is the next stage of mRemote development. mRemote is a full-featured, multi-tab remote connections manager.
SmartCode VNC Manager is a powerful yet easy to use remote administration, network management and monitoring software. It offers built-in support for VNC, RDP, Citrix ICA, Microsoft Hyper-V, Microsoft Virtual Server 2005, RAdmin, SSH, Telnet, Team Viewer, HP Remote Graphics...
Core Shell is a full-featured terminal with built-in OpenSSH support, focused on managing and login to hosts efficiently.
Remote Connection Manager is a Windows application, which features remote client connectivity supporting different protocols. All this is packed using a handy dockable UI.
Screen Sharing is a VNC client by Apple Inc. included as part of Mac OS X v10.5. It allows remote observance or control of any Macintosh machine on the local network that has Screen Sharing activated. It may also be used over the Internet via iChat.
Solar presents the omniscient PuTTY SSH and Telnet client with extended interface enriched by a simple graphical SFTP explorer, all coming packed in a single exe file, which can be used without admin rights.
Remote Desktop Organizer is a tabbed remote desktop client, allowing you to easily organize all of your remote desktop connections in one place.
dRemote is an easy and free tool to handle mutiple remote connections of different types. This tool comes in handy when you have to connect to differnt remote connections all the want to have to change all the settings manually.
A complete, efficient and easy-to-use manager. Create and edit connections, groups, customize the terminal, with multiple instances of the same connection.
RemoteCall is a cloud based remote support solution bridging the agents and clients. Support client PCs, multiple displays, Windows, Mac and Linux as SaaS service or in-house server solution. Best solution for IT professionals.
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Functionally and visually similar to mRemoteNG. Not (yet) as customizable and doesn't (again, yet) support as many protocols, but looks a lot better on high DPI displays.