Belr is Belledonne Communications' language recognition library, written in C++11. It parses text inputs formatted according to a language defined by an ABNF grammar, such as the protocols standardized at IETF.

Linphone is a SIP softphone for voice and video over IP calling (VoIP) and instant messaging. Amongst its features are:

• High Definition (HD) audio and video calls

• Multiple call management (pause and resume)

• Call transfer

• Audio conferencing (merge calls into a conference call)

• Call recording and replay (audio only)

• Instant Messaging with message delivery status (IMDN)

• Picture and file sharing

• Echo cancellation

• Secure user authentication using TLS client certificates

• SRTP, zRTP and SRTP-DTLS voice and video encryption

• Telephone tone (DTMF) support using SIP INFO or RFC 4733

• Audio codecs: opus, speex, g711, g729, gsm, iLBC, g722, SILK, etc.

• Video codecs: VP8, H.264 and H.265 with resolutions up to 1080P, MPEG4

MsOpenH264 is an H.264 encoder/decoder plugin for mediastreamer2 based on the openh264 library.

Belcard is a C++ library to manipulate VCard standard format.

BcMatroska is a free and open standard multi-media container format. It can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. This project provides a convenient distribution of the Matroska multimedia container format.

BCUnit is a fork of the defunct project CUnit, with several fixes and patches applied. It is a unit testing framework for writing, administering, and running unit tests in C.

BcG729 is an implementation of both encoder and decoder of the ITU G729 speech codec. The library written in C 99 is fully portable and can be executed on many platforms including both ARM and x86 processors. It supports concurrent channels encoding and decoding for multi call application such as conferencing.

BcToolBox is an utilities library used by Belledonne Communications software like belle-sip, mediastreamer2 and linphone.

oRTP is a C library implementing the RTP protocol. It implements the RFC 3550 standard.

Belle-sip is a modern library implementing SIP transport, transaction and dialog layers. It is written in C, with an object-oriented API. It also comprises a simple HTTP/HTTPS client implementation.

MSAMR is a plugin of MediaStreamer, adding support for AMR codec. It is based on the opencore-amr implementation.

LIME is an encryption library for one-to-one and group instant messaging, allowing users to exchange messages privately and asynchronously. It supports multiple devices per user and multiple users per device.

MSSILK is a plugin of MediaStreamer, adding support for AMR codec. It is based on the Skype's SILK implementation.

BZRTP is an implementation of ZRTP keys exchange protocol, written in C. It is fully portable and can be executed on many platforms including both ARM and x86.

Mediastreamer2 is a powerful and lightweight streaming engine for telephony applications. This media processing and streaming toolkit is responsible for receiving and sending all multimedia streams in Linphone, including media capture, encoding and decoding, and rendering.

Liblinphone is a high-level SIP library integrating all calling and instant messaging features into an unified easy-to-use API. It is the cross-platform VoIP library on which the Linphone application is based on, and that anyone can use to add audio and video calls or instant messaging capabilities to an application.

MSWebRTC is a plugin of MediaStreamer, adding support for WebRTC codec. It includes features from WebRTC, such as, iSAC and AECM.

Tpacpi-bat is a command-line interface to control battery charging on Lenovo ThinkPad models released after 2011, starting with the xx20 series. It can query and set the thresholds at which one or both batteries will start and stop charging, inhibit charging batteries for a set period of time, or force them to discharge when they otherwise would not.

This tool merely exposes ACPI calls provided by the acpi_call Linux kernel module provided by the acpi-call-linux-module package, which must be installed and loaded separately. Only the original vendor firmware is supported.

This package provides a renameat2 command that calls the Linux-specific renameat2 system call.

Early OOM is a minimalist out of memory (OOM) daemon that runs in user space and provides a more responsive and configurable alternative to the in-kernel OOM killer.

IP sets are a framework inside the Linux 2.4.x and 2.6.x kernel which can be administered by the ipset utility. Depending on the type, currently an IP set may store IP addresses, (TCP/UDP) port numbers or IP addresses with MAC addresses in a way which ensures lightning speed when matching an entry against a set.

If you want to

• store multiple IP addresses or port numbers and match against the entire collection using a single iptables rule.

• dynamically update iptables rules against IP addresses or ports without performance penalty.

• express complex IP address and ports based rulesets with a single iptables rule and benefit from the speed of IP sets.

then IP sets may be the proper tool for you.

This package includes the important tools for controlling the network subsystem of the Linux kernel. This includes arp, ifconfig, netstat, rarp and route. Additionally, this package contains utilities relating to particular network hardware types (plipconfig, slattach) and advanced aspects of IP configuration (iptunnel, ipmaddr).

Headers of the Linux-Libre kernel.

GNU Linux-Libre is a free (as in freedom) variant of the Linux kernel. It has been modified to remove all non-free binary blobs.