GNU Project's Bourne Again SHell

https://www.gnu.org/software/bash/

Programmable completion library for Bash

https://github.com/scop/bash-completion

Free, portable, Open Source 68k Mac emulator

http://gwenole.beauchesne.info/projects/basilisk2/

Monsters, explosions, destruction game for X Window System

https://www.evl.uic.edu/aej/AndyBattalion.html

Daemon monitoring the battery level of ACPI-enabled laptops

https://github.com/ntarmos/battmond/

Bruce's C compiler (with as and ld); can do 16-bit code

Convert X font from BDF to PCF

https://www.x.org/archive/X11R6.8.1/doc/bdftopcf.1.html

Sample screen saver for X

Simple ifcico like Fidonet technology mailer

Simple ifcico like Fidonet technology mailer

Formats and converts text documents into compressed PalmDoc .pdb files

http://sourceforge.net/projects/bibelot/

BigReqs extension headers

https://www.freedesktop.org/wiki/Software/xlibs/

Command line tools from BIND: delv, dig, host, nslookup...

https://www.isc.org/bind/

BIND DNS suite with updated DNSSEC and DNS64

https://www.isc.org/software/bind

BIND DNS suite with updated DNSSEC and DNS64

https://www.isc.org/software/bind

RRDtool frontend for BIND statistics

https://www.linux.it/~md/software/

GNU binary tools

https://www.gnu.org/software/binutils/

Parser generator from FSF, (mostly) compatible with Yacc

https://www.gnu.org/software/bison/

IRC to other chat networks gateway

https://www.bitlbee.org/

Bitmap editor and converter utilities for X

Bitstream Vera TrueType font collection

https://www.gnome.org/fonts/

Small and fast window manager for X11R6

http://blackboxwm.sourceforge.net/

Performance Test of Filesystem I/O

https://github.com/jedisct1/Blogbench

HTML editor designed for the experienced web designer

https://bluefish.openoffice.nl/

Integrated Java environment designed for introductory teaching

https://www.bluej.org/

A simple IRC relay proxy with support for virtual hosting

IA-32 (x86) PC emulator that runs DOS, Win 95, and more

http://bochs.sourceforge.net/

Garbage collection and memory leak detection for C and C++

https://www.hboehm.info/gc/

Garbage collection and memory leak detection for C and C++

https://www.hboehm.info/gc/

Performance Test of Filesystem I/O

http://www.textuality.com/bonnie/

Synchronize bookmarks between multiple browsers

http://bookmarkbridge.sourceforge.net/

Documentation for libraries from boost.org

https://www.boost.org/

Build tool from the boost.org

https://www.boost.org/

Free portable C++ libraries (without Boost.Python)

https://www.boost.org/

Framework for interfacing Python and C++

https://www.boost.org/

Oracle's Java 6 virtual machine release under the GPL v2

http://openjdk.java.net/

Bozotic HTTP server from NetBSD

http://www.eterna.com.au/bozohttpd/

Interactive King James Bible

Boot Splash Image Changer

http://mato.gamato.org/freebsd/

BSD licensed charset/encoding converter library

https://github.com/buganini/bsdconv

BSD-licensed version of grep

http://www.freebsd.org/projects/ideas/#p-bsdtexttools

Monthly script for reporting anonymous statistics about your machine

https://www.bsdstats.org/

Beanshell Java scripting language

http://www.beanshell.org/

3D collision detection and rigid body dynamics library

http://www.bulletphysics.com/

Block-sorting file compressor

https://gitlab.com/federicomenaquintero/bzip2/

Asynchronous DNS resolver library

https://c-ares.haxx.se/

The root certificate bundle from the Mozilla Project

Program to extract Microsoft cabinet (.CAB) files

https://www.cabextract.org.uk/

Vector graphics library with cross-device output support

https://www.cairographics.org/

C++ interface to cairo

http://cairographics.org