Credits – Tribute to the Open Source Software Community

Conference Café is proudly powered by Open Source software.

Conference Café and its subdomains are most-visibly powered by Jitsi Meet conferencing, the Coturn TURN and STUN server, and the WordPress content management system. The WordPress site is invisibly augmented by a self-hosted Plausible privacy-friendly visitation analytics instance (no IP address information or invasive probing).

But those packages are themselves dependent on other Open Source software, including the Linux operating system maintained by Debian and Ubuntu, the Nginx and Apache HTTP and proxy servers, the PHP programming language, Nodejs Javascript, the MariaDB database server, the PostgreSQL database server, the SQLite database server, and a whole stack of packages providing email service (the Postfix mail server, the Dovecot secure IMAP server, SpamAssassin spam filtering, and ClamAV anti-virus filtering, to name just some).

Even those products listed above are merely a few of the components used, and they also depend on a host of other Open Source software tools and services. Those are almost invariably the ‘unsung heroes’ that rarely get acknowledgment.

The operator of this server is sincerely grateful to the developers, maintainers and other contributors of the Open Source software community that brings the world free software: free as in no monetary cost, free as in freedom of choice, and free as in freedom to create.

Below is a list of most of the other software packages used on this server – nearly 2,000 of them!

Please note that any versions numbers you see were those installed when this page was first published. They will probably have changed by the time you’re reading now, as the server is updated fairly assiduously.

Additional software used on this server

  • acl – Provides access control lists utilities.
  • acpid – Listens to ACPI events and executes pre-defined actions.
  • adduser – Utility to add users and groups.
  • adwaita-icon-theme – Default icon theme for GNOME.
  • alsa-topology-conf – ALSA topology configuration files.
  • alsa-ucm-conf – ALSA Use Case Manager configuration files.
  • amavisd-new – Interface between MTA and content checkers.
  • amd64-microcode – Microcode update files for AMD CPUs.
  • apache2 – Apache HTTP Server.
  • apache2-bin – Apache HTTP Server binaries.
  • apache2-data – Apache HTTP Server data files.
  • apache2-dev – Apache HTTP Server development files.
  • apache2-utils – Utility programs for Apache HTTP Server.
  • apparmor – Mandatory Access Control framework.
  • apport – Automatic crash report generation tool.
  • apport-symptoms – Symptom scripts for Apport.
  • apt – Advanced Package Tool for package management.
  • apt-transport-https – APT transport for downloading via HTTPS.
  • apt-utils – Utility programs for package management.
  • aptitude – Text-based interface for APT.
  • aptitude-common – Shared files for Aptitude.
  • arj – Utility for handling ARJ archives.
  • arp-scan – ARP scanning and fingerprinting tool.
  • at – Queues jobs for later execution.
  • at-spi2-core – Assistive Technology Service Provider Interface core.
  • autoconf – Tool for generating configure scripts.
  • automake – Tool for generating Makefile.in files.
  • autopoint – Copies Gettext infrastructure files.
  • autotools-dev – Update infrastructure for config.{guess,sub} files.
  • avahi-daemon – Multicast/Unicast DNS-SD framework daemon.
  • diffutils – Utilities for comparing files.
  • dirmngr – Server for managing certificate revocation lists.
  • distro-info – Provides information about Debian’s distributions.
  • distro-info-data – Distribution data files for distro-info.
  • dmeventd – Device-mapper event daemon.
  • dmidecode – Reports information about your system’s hardware.
  • dmsetup – Device-mapper runtime tool.
  • dns-root-data – DNS root data including root zone and DNSSEC key.
  • dnsmasq-base – Small caching DNS proxy and DHCP server.
  • dosfstools – Utilities for making and checking MS-DOS FAT filesystems.
  • dovecot-core – Secure IMAP and POP3 server.
  • dovecot-imapd – IMAP server component for Dovecot.
  • dovecot-lmtpd – LMTP server component for Dovecot.
  • dovecot-managesieved – ManageSieve protocol server for Dovecot.
  • dovecot-pgsql – PostgreSQL support for Dovecot.
  • dovecot-sieve – Sieve filters support for Dovecot.
  • dpkg – Debian package management system.
  • dpkg-dev – Debian package development tools.
  • dwz – DWARF optimization and duplicate removal tool.
  • e2fsprogs – Utilities for ext2/ext3/ext4 file systems.
  • ed – Classic UNIX line editor.
  • efibootmgr – Tool to manipulate UEFI Firmware Boot Manager.
  • elasticsearch – Search and analytics engine.
  • emacsen-common – Common facilities for all emacsen.
  • ethtool – Utility for controlling network drivers and hardware.
  • fail2ban – Ban hosts that cause multiple authentication errors.
  • fakeroot – Gives a fake root environment.
  • fdisk – Disk partitioning utility.
  • ffmpeg – Multimedia framework to decode, encode, transcode, mux, demux, stream, filter and play.
  • file – Determines file type using “magic” numbers.
  • librtmp1:amd64 – Toolkit for RTMP streams
  • librttopo-dev:amd64 – RT Topology Library (development files)
  • librttopo1:amd64 – RT Topology Library
  • librubberband2:amd64 – Audio time-stretching and pitch-shifting library
  • libruby3.0:amd64 – Libraries necessary to run Ruby 3.0
  • libsamplerate0:amd64 – Audio sample rate conversion library
  • libsasl2-2:amd64 – Cyrus SASL – authentication abstraction library
  • libsasl2-modules:amd64 – Cyrus SASL – pluggable authentication modules
  • libsasl2-modules-db:amd64 – Cyrus SASL – pluggable authentication modules (DB)
  • libsctp-dev:amd64 – Development files for the SCTP libraries
  • libsctp1:amd64 – Stream Control Transmission Protocol library
  • libsdl2-2.0-0:amd64 – Simple DirectMedia Layer library
  • libseccomp-dev:amd64 – Development files for libseccomp
  • libseccomp2:amd64 – High-level interface to Linux seccomp filter
  • libselinux1:amd64 – SELinux runtime shared libraries
  • libsemanage-common – Common files for SELinux policy management libraries
  • libsemanage2:amd64 – SELinux policy management library
  • libsensors-config – Configuration files for libsensors
  • libsensors5:amd64 – Library to read temperature/voltage/fan sensors
  • libsepol2:amd64 – SELinux library for manipulating binary security policies
  • libserd-0-0:amd64 – Lightweight RDF syntax library
  • libsgutils2-2:amd64 – Utilities for working with generic SCSI devices
  • libshine3:amd64 – Fixed-point MP3 encoding library
  • libsigc++-2.0-0v5:amd64 – Type-safe Signal Framework for C++
  • libsigsegv2:amd64 – Library for handling page faults in user mode
  • libslang2:amd64 – S-Lang programming library
  • libsm-dev:amd64 – X11 Session Management library (development headers)
  • libsm6:amd64 – X11 Session Management library
  • libsmartcols1:amd64 – Table or column based output library
  • libsmbios-c2 – Provide access to (SM)BIOS information
  • libsnappy1v5:amd64 – Fast compression/decompression library
  • libsndfile1:amd64 – Library for reading/writing audio files
  • libsndio7.0:amd64 – Small audio and MIDI framework
  • libsocket-wrapper – Wrapper library for socket functions
  • libsocket6-perl – Perl extensions for IPv6
  • libsodium23:amd64 – Sodium cryptographic library
  • libsord-0-0:amd64 – Lightweight RDF storage library
  • libsort-naturally-perl – Perl module for sorting strings naturally
  • libsoup2.4-1:amd64 – HTTP client/server library for GNOME
  • libsoup2.4-common – HTTP client/server library for GNOME – common files
  • libsoxr0:amd64 – High quality 1D sample-rate conversion library
  • libspatialite-dev:amd64 – Geospatial extension for SQLite – development files
  • libspatialite7:amd64 – Geospatial extension for SQLite
  • libspeex1:amd64 – The Speex codec runtime library
  • libspf2-2 – Sender Policy Framework (SPF) library
  • libsphinxbase3:amd64 – SphinxBase support library required by Pocketsphinx
  • libsqlite3-0:amd64 – SQLite 3 shared library
  • libsqlite3-dev:amd64 – SQLite 3 development files
  • libsratom-0-0:amd64 – Library for serialising LV2 atoms to/from Turtle
  • libsrt1.4-gnutls:amd64 – Secure, Reliable, Transport library
  • libss2:amd64 – Command-line interface parsing library
  • libssh-4:amd64 – Tiny C SSH library
  • libssh-gcrypt-4:amd64 – Tiny C SSH library (gcrypt flavor)
  • libssh2-1:amd64 – SSH2 client-side library
  • libssl-dev:amd64 – Secure Sockets Layer toolkit – development files
  • libssl3:amd64 – Secure Sockets Layer toolkit – shared libraries
  • libstdc++-11-dev:amd64 – GNU Standard C++ Library v3 (development files)
  • libstdc++6:amd64 – GNU Standard C++ Library v3
  • libstemmer0d:amd64 – Snowball stemming algorithms for use in Information Retrieval
  • libsub-override-perl – Perl module for easily overriding subroutines
  • libsuperlu-dev:amd64 – Direct solution of large, sparse systems of linear equations
  • libsuperlu5:amd64 – Direct solution of large, sparse systems of linear equations
  • libswitch-perl – switch statement for Perl programs
  • libswresample-dev:amd64 – FFmpeg library for audio resampling, rematrixing etc. – development files
  • libswresample3:amd64 – FFmpeg library for audio resampling, rematrixing etc. – runtime files
  • libswscale-dev:amd64 – FFmpeg library for image scaling and various conversions – development files
  • libswscale5:amd64 – FFmpeg library for image scaling and various conversions – runtime files
  • libsys-hostname-long-perl – Figure out the long (fully-qualified) hostname
  • libsystemd-dev:amd64 – systemd utility library – development files
  • libsystemd0:amd64 – systemd utility library
  • libsz2:amd64 – HDF5 library for handling compressed datasets
  • libtalloc-dev:amd64 – Hierarchical pool based memory allocator – development files
  • libtalloc2:amd64 – Hierarchical pool based memory allocator
  • libtasn1-6:amd64 – Manage ASN.1 structures (runtime)
  • libtasn1-6-dev:amd64 – Manage ASN.1 structures (development)
  • libtasn1-doc – Manage ASN.1 structures (documentation)
  • libtbb-dev:amd64 – Intel Threading Building Blocks (TBB) – development files
  • libtbb12:amd64 – Intel Threading Building Blocks (TBB) – runtime
  • libtbbmalloc2:amd64 – Intel Threading Building Blocks (TBB) – scalable malloc
  • libtcl8.6:amd64 – Tcl (the Tool Command Language) v8.6 – run-time library files
  • libteamdctl0:amd64 – Library to control teamd daemon
  • libterm-readkey-perl – A perl module for simple terminal control
  • libtevent0:amd64 – talloc-based event loop library – shared library
  • libtext-charwidth-perl – get display widths of characters on the terminal
  • libtext-iconv-perl – converts between character sets in Perl
  • libtext-wrapi18n-perl – internationalized substitute of Text::Wrap
  • libtfm1:amd64 – X11 Font Services library
  • libthai-data – Data files for Thai language support library
  • libthai0:amd64 – Thai language support library
  • libtheora-dev:amd64 – Theora Video Compression Codec (development files)
  • libtheora0:amd64 – Theora Video Compression Codec
  • libtie-ixhash-perl – Perl module to order associative arrays
  • libtiff-dev:amd64 – Tag Image File Format library (TIFF), development files
  • libtiff5:amd64 – Tag Image File Format library (TIFF), runtime files
  • libtiffxx5:amd64 – Tag Image File Format library (C++ runtime files)
  • libtimedate-perl – collection of modules to manipulate date/time information
  • libtinfo5:amd64 – shared low-level terminfo library (legacy version)
  • libtinfo6:amd64 – shared low-level terminfo library
  • libtinyxml2.6.2v5:amd64 – C++ XML parsing library
  • libtirpc-common – transport-independent RPC library – common files
  • libtirpc-dev:amd64 – transport-independent RPC library – development files
  • libtirpc3:amd64 – transport-independent RPC library
  • libtk8.6:amd64 – Tk toolkit for Tcl and X11, v8.6 – run-time files
  • lrzip – Long Range ZIP or Lzma RZIP, a compression utility.
  • lsb-base – Linux Standard Base 4.1 init script functionality.
  • lsb-release – Linux Standard Base version reporting utility.
  • lshw – Hardware Lister.
  • lsof – List open files.
  • lto-disabled-list – List of packages that disable link-time optimization.
  • lua-basexx – Base encoding/decoding of any given alphabet using lua.
  • lua-bitop:amd64 – Bitwise operations on numbers.
  • lua-cjson:amd64 – JSON support for Lua.
  • lua-event:amd64 – Binding of libevent to lua.
  • lua-expat:amd64 – SAX XML parser based on the Expat library.
  • lua-filesystem:amd64 – File System Library for the Lua Programming Language.
  • lua-inspect – Lua code analysis.
  • lua-lpeg:amd64 – Parsing Expression Grammars For Lua.
  • lua-luaossl:amd64 – OpenSSL binding for Lua.
  • lua-sec:amd64 – Lua binding for OpenSSL library to provide TLS/SSL communication.
  • lua-socket:amd64 – Network support library for the Lua language.
  • lua5.2 – Lua programming language, version 5.2.
  • luajit – Just-In-Time Compiler for the Lua programming language.
  • lvm2 – Logical Volume Manager 2.
  • lxd-agent-loader – LXD agent loader.
  • lz4 – Extremely fast compression algorithm.
  • lzip – Data compressor based on the LZMA algorithm.
  • lzop – Fast file compressor.
  • m4 – Macro processing language.
  • mailcap – Mechanism to specify mailcap files.
  • mailutils – GNU Mailutils.
  • mailutils-common – Common files for GNU Mailutils.
  • make – GNU make utility to maintain groups of programs.
  • man-db – Tools for searching and reading man pages.
  • manpages – Manual pages for Linux.
  • manpages-dev – Development-related manpages.
  • mariadb-client-10.6 – MariaDB database client.
  • mariadb-client-core-10.6 – MariaDB database core client.
  • mariadb-common – MariaDB common metapackage.
  • mariadb-server – MariaDB database server.
  • mariadb-server-10.6 – MariaDB database server (version 10.6).
  • mariadb-server-core-10.6 – MariaDB database core server.
  • mawk – An interpreter for the AWK Programming Language.
  • mc – Midnight Commander, a file manager.
  • mc-data – Midnight Commander data files.
  • mdadm – Tool for managing Linux Software RAID arrays.
  • media-types – Media types and their use on the Internet.
  • mesa-va-drivers:amd64 – Mesa VA-API video acceleration drivers.
  • mesa-vdpau-drivers:amd64 – Mesa VDPAU video acceleration drivers.
  • mesa-vulkan-drivers:amd64 – Mesa Vulkan video acceleration drivers.
  • mime-support – MIME files ‘mime.types’ & ‘mailcap’, and support programs.
  • mlocate – Merging locate/updatedb implementation.
  • mlock – Locks a mailbox to interlock access.
  • racc – LALR(1) parser generator for Ruby
  • rake – Ruby Make, a build utility for Ruby
  • rar – Archive utility with support for RAR files
  • re2c – Tool for generating C-based recognizers from regular expressions
  • readline-common – GNU Readline library common files
  • redis-server – In-memory data structure store, used as a database, cache, and message broker
  • redis-tools – Command-line tools for Redis server
  • resolvconf – Framework for managing DNS resolver configuration files
  • rpcsvc-proto – RPC service protocol definitions
  • rpm-common – Common files for RPM Package Manager
  • rpm2cpio – Tool to convert RPM package to CPIO archive
  • rsync – Utility for fast incremental file transfer
  • rsyslog – Rocket-fast system for log processing
  • ruby – Dynamic, open source programming language with a focus on simplicity and productivity
  • ruby-dev:amd64 – Header files for compiling extension modules for Ruby
  • ruby-hocon – Ruby library for the HOCON configuration format
  • ruby-kramdown – Markdown converter in Ruby
  • ruby-mini-portile2 – Simplistic port-like solution for developers
  • ruby-mustache – Logic-less Ruby templates
  • ruby-net-telnet – Provides telnet client functionality in Ruby
  • ruby-nokogiri – HTML, XML, SAX, and Reader parser for Ruby
  • ruby-pkg-config – pkg-config implementation for Ruby
  • ruby-ronn – Builds manuals for Ruby libraries and applications
  • ruby-rouge – Pure-ruby colorizer based on pygments
  • ruby-rubygems – Ruby standard for publishing and managing third-party libraries
  • ruby-webrick – HTTP server toolkit for Ruby
  • ruby-xmlrpc – Standard XML-RPC library for Ruby
  • ruby3.0 – Ruby 3.0 interpreter
  • ruby3.0-dev:amd64 – Header files for Ruby 3.0
  • ruby3.0-doc – Documentation for Ruby 3.0
  • rubygems-integration – Integration of Debian Ruby packages with Rubygems
  • run-one – Utility for running just one instance of a command and its args at a time
  • screen – Terminal multiplexer with VT100/ANSI terminal emulation
  • sed – Stream editor for filtering and transforming text
  • sensible-utils – Utilities for sensible alternative selection
  • session-migration – Tool for migrating settings between desktop sessions
  • sg3-utils – Utilities for working with generic SCSI devices
  • sg3-utils-udev – Udev rules for sg3-utils
  • shared-mime-info – Core database of common MIME types
  • shtool – GNU shtool shell tool
  • snapd – Service for delivering and managing snap packages
  • socat – Multipurpose relay for bidirectional data transfer
  • software-properties-common – Manage the repositories that you install software from
  • sosreport – Set of tools to gather troubleshooting data from a system
  • spamass-milter – Milter (mail filter) for SpamAssassin
  • spamassassin – Advanced email filter which can identify spam
  • spamc – Client for SpamAssassin spam filtering daemon
  • sqlite3 – Software library that provides a relational database management system
  • squashfs-tools – Tools to create and append to squashfs filesystems
  • ssh-import-id – Import SSH public keys from a variety of public key servers
  • ssl-cert – Simple debconf wrapper for OpenSSL
  • strace – Diagnostic, debugging and instructional userspace utility for Linux
  • sudo – Utility allowing users to run commands as another user
  • suricata – High performance Network IDS, IPS and Network Security Monitoring engine
  • sysstat – Performance monitoring tools for Linux
  • systemd – System and service manager for Linux
  • systemd-hwe-hwdb – Hardware Database for systemd (HWE version)
  • systemd-sysv – SysV init compatibility for systemd
  • systemd-timesyncd – Network time synchronization daemon
  • sysvinit-utils – System-V-like utilities
  • tar – Archiving utility designed to store and extract files
  • tcl – Tool Command Language, a robust general-purpose scripting language
  • tcl-dev:amd64 – Development files for the Tcl language
  • tcl8.6 – Tcl 8.6 scripting language runtime
  • tcl8.6-dev:amd64 – Development files for Tcl 8.6
  • tcpdump – Command-line network traffic analyzer
  • telnet – User interface to the TELNET protocol
  • thermald – Linux Thermal Daemon
  • thin-provisioning-tools – Tools for handling thin-provisioned device-mapper targets
  • tilix – Tiling terminal emulator for Linux
  • tilix-common – Common files for Tilix
  • time – Utility for monitoring a program’s use of system resources
  • tk – Graphical toolkit for the Tcl scripting language
  • tk-dev:amd64 – Development files for the Tk toolkit
  • tk8.6 – Tk 8.6 graphical toolkit runtime
  • tk8.6-dev:amd64 – Development files for Tk 8.6
  • tmux – Terminal multiplexer
  • tpm-udev – Udev rules for TPM (Trusted Platform Module)
  • tzdata – Time zone and daylight-saving time data
  • ubuntu-advantage-tools – Tools for managing Ubuntu Advantage subscription
  • ubuntu-drivers-common – Detect and install additional Ubuntu driver packages
  • ubuntu-keyring – GnuPG keys of the Ubuntu archive
  • ubuntu-mono – Ubuntu Mono icon theme
  • ubuntu-release-upgrader-core – Manage release upgrades
  • ucf – Update Configuration File(s): preserve user changes to config files
  • udev – Device file manager for the Linux kernel
  • udisks2 – D-Bus service to access and manipulate storage devices
  • ufw – Uncomplicated Firewall, a program for managing a netfilter firewall
  • unattended-upgrades – Automatic installation of security upgrades
  • unixodbc-common – Basic ODBC configuration files and low-level drivers
  • unixodbc-dev:amd64 – ODBC libraries for UNIX (development files)
  • unrar – Tool for extracting files from RAR archives
  • unrar-free – Free implementation of unrar
  • unzip – De-archiver for .zip files
  • update-manager-core – Core functionality for the update manager
  • update-notifier-common – Files shared between update-notifier and other packages
  • upower – D-Bus service to query and set power devices status
  • usb-modeswitch – Mode switching tool for controlling “flip flop” USB devices
  • usb-modeswitch-data – Data files for usb-modeswitch
  • usb.ids – Repository of USB IDs
  • usbutils – Linux USB utilities
  • usrmerge – Tool for merging /bin, /sbin, /lib* into /usr
  • util-linux – Miscellaneous system utilities for Linux
  • uuid-dev:amd64 – Universally Unique Identifier library – headers and static libraries
  • uuid-runtime – Tools for generating and parsing UUIDs
  • va-driver-all:amd64 – Video Acceleration (VA) API — driver metapackage
  • vdpau-driver-all:amd64 – Video Decode and Presentation API for Unix – driver metapackage
  • vim – Vi IMproved, a text editor
  • vim-common – Common files for Vim
  • vim-runtime – Files needed for Vim at runtime
  • vim-tiny – Small version of Vim compiled with a subset of features
  • vtk9 – The Visualization Toolkit (VTK) v9
  • wget – Network utility to retrieve files from the web
  • whiptail – Display dialog boxes from shell scripts
  • whois – Intelligent WHOIS client
  • wireless-regdb – Wireless regulatory database for Linux
  • wpasupplicant – WPA/WPA2/IEEE 802.1X Supplicant
  • x11-common – Common files for X11
  • x11-utils – X11 utilities
  • x11-xserver-utils – X server utilities
  • x11proto-dev – X11 protocol headers
  • xdg-user-dirs – Tool to manage well known user directories
  • xdg-utils – Command line tools that assist applications with a variety of desktop integration tasks
  • xfsprogs – Utilities for managing the XFS filesystem
  • xkb-data – X Keyboard Extension (XKB) data
  • xorg-sgml-doctools – Common tools for building X.Org SGML documentation
  • xtrans-dev – X transport library (development files)
  • xxd – Tool to make a hexdump or do the reverse
  • xz-utils – Compression and decompression in the LZMA format – command line utility
  • yajl-tools – Yet Another JSON Library – tools
  • yarn – Fast, reliable, and secure dependency management
  • zerofree – Tool to zero free blocks on an ext2/3/4 filesystem
  • zip – Archiver for .zip files
  • zlib1g:amd64 – Compression library – runtime
  • zlib1g-dev:amd64 – Compression library – development
  • zstd – Zstandard – Fast real-time compression algorithm
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