Mail reader for the GNOME desktop

https://pawsa.fedorapeople.org/balsa/

BAMF Application Matching Framework

https://launchpad.net/bamf

GNOME 3 graphical directory tree analyzer

https://wiki.gnome.org/Apps/Baobab

Interpreter for Snort unified2 binary output files

http://www.securixlive.com/barnyard2/

Utility to encode and decode base64 files

https://www.fourmilab.ch/webtools/base64/

The GNU Project's Bourne Again SHell

http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html

Programmable completion library for Bash

http://bash-completion.alioth.debian.org/

FreeBSD-oriented extension to the Bash completion library

https://github.com/0mp/bash-completion-freebsd

Beneath a Steel Sky: a post-apocalyptic futuristic graphical adventure

https://www.scummvm.org/games/#sky

Jail automation framework

https://bastillebsd.org

sd-bus library, extracted from systemd

https://github.com/emersion/basu

GNUstep battery monitor for laptops

http://www.nongnu.org/gap/batmon/index.html

Monsters, explosions, destruction game for X Window System

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

Daemon monitoring the battery level of ACPI-enabled laptops

http://ntarmos.dyndns.org/

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

Tool for resizing BDF format font

http://openlab.ring.gr.jp/efont/dist/tools/bdfresize/

Convert X font from BDF to PCF

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

Solaris-like utility to manage Boot Environments on ZFS

https://github.com/vermaden/beadm/

Collect logs locally and send to remote logstash

https://www.elastic.co/products/beats/

Send logs, network, metrics and heartbeat to elasticsearch or logstash

https://www.elastic.co/products/beats/

Sample screen saver for X

Dynamic menu library and client program inspired by dmenu

https://github.com/Cloudef/bemenu

Microbenchmark support library

https://github.com/google/benchmark

Berkeley DB Java Edition

https://www.oracle.com/database/technologies/related/berkeleydb.html

Simple ifcico like Fidonet technology mailer

Simple ifcico like Fidonet technology mailer

One stop library package by Bruce Guenter

https://untroubled.org/bglibs/

Simple X11 BackGround Setter using Imlib2

https://github.com/Gottox/bgs

Dictionary for HITCHCOCK'S BIBLE NAMES (EPWING V1 format)

http://openlab.ring.gr.jp/edict/fpw/

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

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

BIND DNS suite with updated DNSSEC and DNS64

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

BIND DNS suite with updated DNSSEC and DNS64

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

FUSE based bindfs implementation way more powerful than nullfs

https://bindfs.org/

RRDtool frontend for BIND statistics

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

GNU binary tools

http://sources.redhat.com/binutils/

Bioinformatics framework

http://bioinformatics.org/biococoa/

Dynamic IP routing daemon

https://bird.nic.cz/

Parser generator from FSF, (mostly) compatible with Yacc

An IRC to other chat networks gateway

http://www.bitlbee.org/

Bitmap editor and converter utilities for X

Bitstream Vera TrueType font collection

http://www.gnome.org/fonts/

Contemporary serif typeface for text designed for comfortably reading

https://www.huertatipografica.com/fonts/bitter-ht

Black Hole Solitaire Solver

https://www.shlomifish.org/open-source/projects/black-hole-solitaire-solver

Small and fast window manager for X11R6

http://blackboxwm.sourceforge.net/

Stencil font inspired by filling in sans-serif newspaper headlines

https://www.theleagueofmoveabletype.com/blackout

Basic Linear Algebra, level 1, 2, and 3

http://www.netlib.org/blas/

Memory enhancement game

https://edu.kde.org/blinken/

Software framework for high-performance BLAS-like libraries

https://github.com/flame/blis

Blocklist ip list downloader

http://www.blocklist.de/en/export.html

Performance Test of Filesystem I/O

http://blogbench.pureftpd.org/project/blogbench