GNU Common C++ is an portable, optimized class framework for threaded applications, supporting concurrent synchronization, inter-process communications via sockets, and various methods for data handling, such as serialization and XML parsing. It includes the uCommon C++ library, a smaller reimplementation.

This package provides an implementation of the Secure Real-time Transport Protocol (SRTP), the Universal Security Transform (UST), and a supporting cryptographic kernel.

GNU oSIP is an implementation of the SIP protocol. It is used to provide multimedia and telecom software developers with an interface to initiate and control SIP sessions.

Cool-retro-term (crt) is a terminal emulator which mimics the look and feel of the old cathode ray tube (CRT) screens. It has been designed to be eye-candy, customizable, and reasonably lightweight.

This package provides a terminal emulator with hyperlink support. It's based on VTE and aimed at power users.

Xiate is a terminal emulator which tries to keep a balance between features and simplicity. This is achieved by using VTE as a powerful backend, while UI, configuration, and code try to remain much more minimalistic.

tmate is a terminal sharing application that allows you to share your terminal with other users over the Internet. tmate is a fork of tmux.

foot is a terminal emulator for systems using the Wayland display server. It is designed to be fast, lightweight, and independent of desktop environments. It can be used as a standalone terminal and also has a server/client mode.

Libtermkey handles all the necessary logic to recognise special keys, UTF-8 combining, and so on, with a simple interface.

Sakura is a terminal emulator based on GTK+ and VTE. It's a terminal emulator with few dependencies, so you don't need a full GNOME desktop installed to have a decent terminal emulator.

Use asciinema to record and share your terminal sessions, the right way. Forget screen recording apps and blurry video. Enjoy a lightweight, purely text-based approach to terminal recording.

Kmscon is a terminal emulator based on Linux's kernel mode setting (KMS). It can replace the in-kernel virtual terminal (VT) implementation with a user-space console. Compared to the Linux console, kmscon provides enhanced features including XKB-compatible internationalized keyboard support, UTF-8 input/font support, hardware-accelerated rendering, multi-seat support, a replacement for mingetty, and more.

Tilda is a terminal emulator similar to normal terminals like gnome-terminal (GNOME) or Konsole (KDE), with the difference that it drops down from the edge of a screen when a certain configurable hotkey is pressed. This is similar to the built-in consoles in some applications. Tilda is highly configurable through a graphical wizard.

Alacritty is a GPU-accelerated terminal emulator with a strong focus on simplicity and performance. With such a strong focus on performance, included features are carefully considered and you can always expect Alacritty to be blazingly fast. By making sane choices for defaults, Alacritty requires no additional setup. However, it does allow configuration of many aspects of the terminal. Note that you need support for OpenGL 3.2 or higher.

beep allows the user to control the PC speaker with precision, allowing different sounds to indicate different events. While it can be run quite happily on the command line, its intended place of residence is within scripts, notifying the user when something interesting occurs. Of course, it has no notion of what's interesting, but it's very good at that notifying part.

FbTerm is a fast terminal emulator for Linux with frame buffer device or VESA video card. Features include:

• mostly as fast as terminal of Linux kernel while accelerated scrolling is enabled;

• select font with fontconfig and draw text with freetype2, same as Qt/Gtk+ based GUI apps;

• dynamically create/destroy up to 10 windows initially running default shell;

• record scrollback history for every window;

• auto-detect current locale and convert text encoding, support double width scripts like Chinese, Japanese etc;

• switch between configurable additional text encodings with hot keys on the fly;

• copy/paste selected text between windows with mouse when gpm server is running;

• change the orientation of screen display, a.k.a. screen rotation;

• lightweight input method framework with client-server architecture;

• background image for eye candy.

Eternal Terminal (ET) is a remote shell that automatically reconnects without interrupting the session. ET uses SSH to initialize a secure connection. Unlike SSH sessions, which must be killed and reconnected after a network outage an ET session will survive network outages and IP roaming. ET provides the same core functionality as mosh, while also supporting native scrolling and tmux control mode (tmux -CC).

tio is a simple TTY terminal application which features a straightforward commandline interface to easily connect to TTY devices for basic input/output.

Libvterm is an abstract C99 library which implements a VT220 or xterm-like terminal emulator. It doesn't use any particular graphics toolkit or output system, instead it invokes callback function pointers that its embedding program should provide it to draw on its behalf. It avoids calling malloc during normal running state, allowing it to be used in embedded kernel situations.

Tilix is a tiling terminal emulator following the Gnome Human Interface Guidelines. Its features include:

1. Layout terminals in any fashion by splitting them horizontally or vertically.

2. Terminals can be re-arranged using drag and drop both within and between windows.

3. Terminals can be detached into a new window via drag and drop.

4. Input can be synchronized between terminals so commands typed in one terminal are replicated to the others.

5. Supports notifications when processes are completed out of view.

Kitty is a fast and featureful GPU-based terminal emulator:

• Offloads rendering to the GPU for lower system load and buttery smooth scrolling. Uses threaded rendering to minimize input latency.

• Supports all modern terminal features: graphics (images), unicode, true-color, OpenType ligatures, mouse protocol, focus tracking, bracketed paste and several new terminal protocol extensions.

• Supports tiling multiple terminal windows side by side in different layouts without needing to use an extra program like tmux.

• Can be controlled from scripts or the shell prompt, even over SSH.

• Has a framework for Kittens, small terminal programs that can be used to extend kitty's functionality. For example, they are used for Unicode input, hints, and side-by-side diff.

• Supports startup sessions which allow you to specify the window/tab layout, working directories and programs to run on startup.

• Allows you to open the scrollback buffer in a separate window using arbitrary programs of your choice. This is useful for browsing the history comfortably in a pager or editor.

Unibilium is a basic C terminfo library. It doesn't depend on curses or any other library. It also doesn't use global variables, so it should be thread-safe.

This package provides an interactive command-line filter usable with any list--including files, command history, processes and more.

This package provides a thin wrapper for fzf.