Light-weight and easy-to-use password manager

https://keepass.info/

KeePass plugin which facilitates the Kee Firefox plugin

https://www.kee.pm/

Serial and network communications package

https://www.kermitproject.org/

Library for registering keyboard shortcuts

https://github.com/engla/keybinder

Library for registering keyboard shortcuts

https://github.com/engla/keybinder

Extra modules and scripts for CMake

https://quickgit.kde.org/?p=extra-cmake-modules.git

Khmer OS fonts

https://sourceforge.net/projects/khmer/

Browser based analytics and search interface to ElasticSearch

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

802.11 layer2 wireless network detector, sniffer, and IDS

http://www.kismetwireless.net/

Compiler of Keyman KMFL keyboard sources to use with SCIM/IBus

http://kmfl.sourceforge.net/

Example KMS/GBM/EGL application

https://gitlab.freedesktop.org/mesa/kmscube

High performance authoritative-only DNS server

https://www.knot-dns.cz/

High performance authoritative-only DNS server

https://www.knot-dns.cz/

High performance authoritative-only DNS server

https://www.knot-dns.cz/

Web application framework for writing web APIs in C

http://www.kore.io/

Authentication system developed at MIT, successor to Kerberos IV

http://web.mit.edu/kerberos/

Official AT&T release of KornShell 93

http://www.kornshell.com/

Development branch of AT&T KornShell 93

http://www.kornshell.com/

Testing framework for infrastructure software

https://github.com/jmmv/kyua/

Cracks SAMBA or Windows NT passwords

Icon pack designed to integrate with most desktop environments

https://krourke.org/projects/art/la-capitaine-icon-theme

Linux Audio Developer's Simple Plugin API

http://www.ladspa.org/

Fast MP3 encoder kit

http://lame.sourceforge.net/

Linear Algebra PACKage

http://www.netlib.org/lapack/

Tetris-like game for GNUstep

http://www.nongnu.org/gap/lapispuzzle/

Session management system for JACK audio applications

http://www.nongnu.org/lash/

Image viewer and slideshow application

http://gap.nongnu.org/

LaTeX service for GNUstep

http://www.roard.com/latexservice/

Sans-serif type family

http://www.latofonts.com

Microsoft .CABinet file creator

http://ohnopub.net/~ohnobinki/lcab/

Light Color Management System -- a color management library

http://www.littlecms.com/

Accurate, fast, and small-footprint color management engine

https://www.littlecms.com/

Linux Test Project GCOV extension

http://ltp.sourceforge.net/coverage/lcov.php

Webfrontend for managing accounts stored in an OpenLDAP server

https://www.ldap-account-manager.org/lamcms/

Maintain DNS zones using an LDAP directory

https://github.com/bklang/ldap2dns

Utility for patching LDAP directories using LDIF files

https://launchpad.net/ldapdiff

LDAP-like embedded database

https://ldb.samba.org/

LDAP-like embedded database

https://ldb.samba.org/

LDAP-like embedded database

https://ldb.samba.org/

Ldconfig compatibility script

Library for programs conforming to DNS RFCs and drafts

https://www.nlnetlabs.nl/projects/ldns/

Revival of an old classic, Alternate Gothic #1

https://www.theleagueofmoveabletype.com/league-gothic

Revival of ATF\x27s classic Spartan

https://www.theleagueofmoveabletype.com/league-spartan

LALR(1) parser generator. Similar in function to yacc and bison

https://www.hwaci.com/sw/lemon/

C library for efficient image processing and image analysis operations

http://www.leptonica.org/

Better pager utility

https://www.greenwoodsoftware.com/less/

Fast and lightweight key/value database library by Google

https://github.com/google/leveldb

Fixed width fonts from the Linux Font Project

Variable width fonts from the Linux Font Project

Shell-like command line FTP client

http://lftp.tech/