Abseil Common Libraries (C++)

https://abseil.io/

Interactive Python accessibility explorer for GNOME

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

Expose the Online Accounts API to QML applications

https://gitlab.com/groups/accounts-sso

D-Bus interface for user account query and manipulation

https://gitlab.freedesktop.org/accountsservice/accountsservice

Receive faxes using sound card and radio

Kanji code converter

https://hp.vector.co.jp/authors/VA004474/etc/etc.html

Analog Clock for GNUstep

https://gap.nongnu.org/aclock/index.html

PC/SC driver for CS CCID smart card readers

https://www.acs.com.hk/en/driver/4/acr38-smart-card-reader/

Program for sending email messages for CVS repository commits

http://search.cpan.org/dist/activitymail/

ADAMEm is a portable Coleco ADAM and ColecoVision emulator

http://www.komkon.org/~dekogel/adamem.html

Complain about inappropriate commercial use (f.e. SPAM) of usenet/e-mail

http://www.rdrop.com/users/billmc/adcomplain.html

Versatile addressbook for GNUstep

http://gap.nongnu.org/addresses/index.html

Goodies for addressbook for GNUstep

http://giesler.biz/bjoern/en/sw_addr.html

Easy to use asynchronous-capable DNS client library and utilities

https://www.chiark.greenend.org.uk/~ian/adns/

Adobe CMap collection

https://partners.adobe.com/asn/tech/type/ftechnotes.jsp

Database library for PHP

http://adodb.org/

Automatic differentiation library

https://github.com/coin-or/ADOL-C

GNOME Symbolic Icons

Adobe Font Development Kit for OpenType (AFDKO)

https://github.com/adobe-type-tools/afdko

Affiche allows people to stick notes

http://www.collaboration-world.com/cgi-bin/project/index.cgi?pid=5

Window manager originally based on the Bowman NeXTstep clone

http://www.afterstep.org/

FTP-like shell for accessing Apple II disk images

File system automounting implemented in user-space using FUSE

https://github.com/pcarrier/afuse

TrueType monospaced font designed for X environments

https://b.agaric.net/page/agave

High Quality Rendering Engine for C++

http://www.antigrain.com/

Approximate grep (fast approximate pattern-matching tool)

File and directory integrity checker

https://aide.github.io/

AirSpy's usemode driver and associated tools

https://airspy.com/

ajaxzip2 (Japanese ZIP code utility) core scripts

https://www.kawa.net/works/ajax/ajaxzip2/ajaxzip2.html

ajaxzip2 (Japanese ZIP code utility) ZIP data

https://www.kawa.net/works/ajax/ajaxzip2/ajaxzip2.html

Storage server for KDE-Pim

https://community.kde.org/KDE_PIM/Akonadi

Morse code training program

https://www.nongnu.org/aldo/ https://savannah.nongnu.org/projects/aldo/

Free multi-lingual font designed for screens

http://alef.hagilda.com/

Serif typeface originally intended for literature

https://github.com/huertatipografica/Alegreya-libre

Humanist sans serif font with a calligraphic feeling

https://www.huertatipografica.com/fonts/alegreya-sans-ht

Wrapper around the freetype2 library

https://opensnc.sourceforge.net/alfont/

Meta-port which setups Japanese fonts

Interpreter for purely symbolic LISP

http://www.t3x.org/alisp/

Cross-platform library for games and multimedia programming

https://liballeg.org/

Asteroids clone by Allen Smith

https://allenmonroesmith.bitbucket.io/Allenroids/

Mail and news client descended from Pine

https://alpineapp.email/

ALSA compatibility library

https://www.alsa-project.org/

ALSA compatibility library plugins

https://www.alsa-project.org/

ALSA compatibility utils

http://www.alsa-project.org/

Aspell German Old Spelling (Deutsch - alte Rechtschreibung) dictionary

Amazon Simple Systems Manager Agent

https://github.com/aws/amazon-ssm-agent

Faithfully remade Amiga fonts

https://github.com/rewtnull/amigafonts

Actions, Menus and Toolbars Kit

https://gitlab.gnome.org/World/gedit/libgedit-amtk

Library from KDE Education project

https://www.kde.org/applications/education/

Fast program for analysing WWW logfiles

http://www.analog.cx/