Seren is a simple VoIP program based on the Opus codec that allows you to create a voice conference from the terminal, with up to 10 participants, without having to register accounts, exchange emails, or add people to contact lists. All you need to join an existing conference is the host name or IP address of one of the participants.

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

Baresip is a portable and modular SIP user agent with support for audio and video, and many IETF standards such as SIP, SDP, RTP/RTCP, STUN, TURN, ICE, and WebRTC.

GNU ccRTP is an implementation of RTP, the real-time transport protocol from the IETF. It is suitable both for high capacity servers and personal client applications. It is flexible in its design, allowing it to function as a framework for the framework, rather than just being a packet-manipulation library.

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.

EXosip is a library that hides the complexity of using the SIP protocol for multimedia session establishment. This protocol is mainly to be used by VoIP telephony applications (endpoints or conference server) but might be also useful for any application that wish to establish sessions like multiplayer games.

Mumble is an low-latency, high quality voice chat software primarily intended for use while gaming. Mumble consists of two applications for separate usage: mumble for the client, and murmur for the server.

Libosmocore includes several libraries:

• libosmocore: general-purpose functions

• libosmovty: interactive VTY command-line interface

• libosmogsm: definitions and helper code related to GSM protocols

• libosmoctrl: shared implementation of the Osmocom control interface

• libosmogb: implementation of the Gb interface with its NS/BSSGP protocols

• libosmocodec: implementation of GSM voice codecs

• libosmocoding: implementation of GSM 05.03 burst transcoding functions

• libosmosim: infrastructure to interface with SIM/UICC/USIM cards

Libre is a portable and generic library for real-time communications with async IO support and a complete SIP stack with support for protocols such as SDP, RTP/RTCP, STUN/TURN/ICE, BFCP, HTTP and DNS.

PJProject provides an implementation of the Session Initiation Protocol (SIP) and a multimedia framework.

LibiLBC is a packaging friendly copy of the iLBC codec from the WebRTC project. It provides a base for distribution packages and can be used as drop-in replacement for the non-free code from RFC 3591.

GNU ZRTP C++ provides a library that adds ZRTP support to the GNU ccRTP stack and serves as library for other RTP stacks (PJSIP, GStreamer).

xgoldmon is an utility that converts the USB logging mode messages that various Intel/Infineon XGold modems send to the USB port to gsmtap. It then then sends them to a given IP address to enable users to view cellular network protocol traces in Wireshark.

It supports the following smartphones:

• Samsung Galaxy S4, GT-I9500 variant

• Samsung Galaxy SIII, GT-I9300 variant

• Samsung Galaxy Nexus, GT-I9250 variant

• Samsung Galaxy SII, GT-I9100 variant

• Samsung Galaxy Note II, GT-N7100 variant

PJProject provides an implementation of the Session Initiation Protocol (SIP) and a multimedia framework.

This package provides multiplexer for the terminal focused on simplicity, compatibility, size and stability.

Bootterm is a terminal designed to ease connection to ephemeral serial ports. It features automatic port detection, port enumeration, support for non-standard baud rates, the ability to wait for ports to appear, and the ability to read and write via stdin and stdout.

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.

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.

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

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.

Termite is a minimal terminal emulator, with a slightly modified version of VTE exposing the necessary functions for keyboard text selection and URL hints. It was designed for use with tiling window managers.

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.

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

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.