The CAC library can be used to emulate and share smart cards from client system to local or remote virtual machines.

Usbredir is a network protocol for sending USB device traffic over a network connection. It can be used to redirect traffic from a USB device to a different (virtual) machine than the one to which the USB device is attached.

Graphical console client for virtual machines using SPICE or VNC.

Spice-vdagent enables sharing the clipboard and guest display resolution scaling on graphical console window resize.

A virtual 3D GPU library that enables a virtualized operating system to use the host GPU to accelerate 3D rendering.

SPICE (the Simple Protocol for Independent Computing Environments) is a remote-display system built for virtual environments which allows users to view a desktop computing environment.

sc-im is a highly configurable spreadsheet program providing a vim-like experience. sc-im supports gnuplot interaction, functions for sorting and filtering, 256 color support, and much more.

VisiData is an interactive multitool for tabular data. It combines the clarity of a spreadsheet, the efficiency of the terminal, and the power of Python, into a lightweight utility which can handle millions of rows.

SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.

SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.

Squirrel is a high level imperative, object-oriented programming language, designed to be a light-weight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.

libssh is a C library implementing the SSHv2 and SSHv1 protocol for client and server implementations. With libssh, you can remotely execute programs, transfer files, and use a secure and transparent tunnel for your remote applications.

Guile-SSH is a library that provides access to the SSH protocol for programs written in GNU Guile interpreter. It is a wrapper to the underlying libssh library.

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python 3.6+ asyncio framework.

mock-ssh-server packs a Python context manager that implements an SSH server for testing purposes. It is built on top of paramiko, so it does not need OpenSSH binaries to be installed.

hss is an interactive SSH client for multiple servers. Commands are executed on all servers in parallel. Execution on one server does not need to wait for that on another server to finish before starting. One can run a command on hundreds of servers at the same time, with almost the same experience as a local Bash shell.

It supports:

• interactive input: based on GNU readline.

• history: responding to the C-r key.

• auto-completion: TAB-completion from remote servers for commands and file names.

sshpass is a tool for non-interactively performing password authentication with SSH's so-called interactive keyboard password authentication.

The SSH2 protocol implemented in OpenSSH is standardised by the IETF secsh working group and is specified in several RFCs and drafts. It is composed of three layered components:

The transport layer provides algorithm negotiation and a key exchange. The key exchange includes server authentication and results in a cryptographically secured connection: it provides integrity, confidentiality and optional compression.

The user authentication layer uses the established connection and relies on the services provided by the transport layer. It provides several mechanisms for user authentication. These include traditional password authentication as well as public-key or host-based authentication mechanisms.

The connection layer multiplexes many different concurrent channels over the authenticated connection and allows tunneling of login sessions and TCP-forwarding. It provides a flow control service for these channels. Additionally, various channel-specific options can be negotiated.

The SSH2 protocol implemented in OpenSSH is standardised by the IETF secsh working group and is specified in several RFCs and drafts. It is composed of three layered components:

The transport layer provides algorithm negotiation and a key exchange. The key exchange includes server authentication and results in a cryptographically secured connection: it provides integrity, confidentiality and optional compression.

The user authentication layer uses the established connection and relies on the services provided by the transport layer. It provides several mechanisms for user authentication. These include traditional password authentication as well as public-key or host-based authentication mechanisms.

The connection layer multiplexes many different concurrent channels over the authenticated connection and allows tunneling of login sessions and TCP-forwarding. It provides a flow control service for these channels. Additionally, various channel-specific options can be negotiated.

Endlessh is an SSH tarpit that very slowly sends an endless, random SSH banner. It keeps SSH clients locked up for hours or even days at a time. The purpose is to put your real SSH server on another port and then let the script kiddies get stuck in this tarpit instead of bothering a real server.

Since the tarpit is in the banner before any cryptographic exchange occurs, this program doesn't depend on any cryptographic libraries. It's a simple, single-threaded, standalone C program. It uses poll() to trap multiple clients at a time.

Corkscrew tunnels SSH connections through most HTTP and HTTPS proxies. It supports proxy authentication through the HTTP basic authentication scheme with optional TLS to protect credentials.

ClusterShell is an event-driven Python framework, designed to run local or distant commands in parallel on server farms or on large GNU/Linux clusters. It will take care of common issues encountered on HPC clusters, such as operating on groups of nodes, running distributed commands using optimized execution algorithms, as well as gathering results and merging identical outputs, or retrieving return codes. ClusterShell takes advantage of existing remote shell facilities such as SSH.

libssh2 is a library intended to allow software developers access to the SSH-2 protocol in an easy-to-use self-contained package. It can be built into an application to perform many different tasks when communicating with a server that supports the SSH-2 protocol.

HPN-SSH is a series of modifications to OpenSSH, the predominant implementation of the ssh protocol. It was originally developed to address performance issues when using ssh on high speed long distance networks.