Best Free Software for Linux

Best Free Programming for Linux

Best Free HTML Editor for Linux

KompoZer , one of the best free WYSIWYG editors is KompoZer, our top recommendation for newbies. It's designed for non-technical computer users who want to create an attractive web site without needing to know HTML. Features include integrated file management (upload to and edit files on a web server), tabbed editing (allowing work on multiple pages), and support for forms, tables and templates. (Review)

NetBeans started life as a Java Editor but with recent releases it has developed into a powerful text editor for web scripting.

At first glance, NetBeans is a little intimidating. Most of the menu items can be ignored by ordinary mortals. Using it as an HTML/PHP editor is akin to using a steam hammer to crack a peanut. Nevertheless the code completion, code colouring and the professional look and feel make it an excellent choice. (Review)

Best Free NFO Viewer for Linux

NFO Viewer , a simple viewer for NFO files with preset font, encoding settings, automatic window size and clickable hyperlinks.

Best Free Programming Editor for Linux

Bluefish , a lightweight yet powerful editor designed for experienced programmers and web designers, and works as a general purpose editor as well with the IDE.

Its user interface is complete with toolbars, dialogs and user-customized menus to facilitate insertion of markups and codes. Options are available for writing websites, scripts and programming codes in many programming and markup languages, with many other useful features. (Review)

Atom , a cross-platform and open-source text editor that is modern and customizable with themes, multiple panes, file system browser, smart autocompletion, code folding, syntax highlight, find and replace, spell check and built-in package manager to add new features and functionality such as Teletype collaboration and IDE.

Kate , an advanced and easy-to-use editor supporting scriptable syntax highlighting, indentation and code folding for many source files, loads fast and runs stably. (Review)

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BlueProximity - add security to your desktop by automatically locking and unlocking the screen when you and your phone leave/enter the desk:

http://sourceforge.net/projects/blueproximity/

Steel - Command line password manager: http://www.steelpasswordmanager.org

"... Linuxbrew is a fork of Homebrew, the Mac OS package manager, for Linux ...":

http://brew.sh/linuxbrew/

Mutate is a simple launcher inspired by Alfred (OS X app) for Linux:

https://github.com/qdore/Mutate

PPSSPP can run your PSP games on your PC in full HD resolution:
http://www.ppsspp.org/

Passion Audio Player:

http://www.passionplayer.com/passion_audio_player.html

"... cclive is a tool for downloading media from YouTube and similar websites. It has a low memory footprint compared to other existing tools ...":

http://cclive.sourceforge.net/index.html#about

GKrellM is a single process stack of system monitors:
http://gkrellm.srcbox.net/

"... Wbar is a simple and highly customizable quick-launch dock that adds a little dimension and color to an LXDE or Openbox desktop without adding much additional weight or being gaudy ...":

http://lxlinux.com/wbar.html

Open-Sankoré is a multiplatform, open-source program that is compatible with every type of interactive hardware:
http://open-sankore.org/

rpCalc:

http://rpcalc.bellz.org/index.html

Prometheus - an open-source service monitoring system and time series database:

http://prometheus.io/

Gambas is a full-featured object language and development environment built on a BASIC interpreter:

http://gambas.sourceforge.net/en/main.html

Kubernetes is an open source orchestration system for Docker containers:

http://kubernetes.io/

"... CRIU is a software tool for Linux operating system. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at ...":

http://criu.org

"... StackStorm Community is a powerful automation tool that wires together all of your apps, services and workflows ...":

https://stackstorm.com/

RethinkDB is the first open-source, scalable JSON database built from the ground up for the realtime web:

https://www.rethinkdb.com/

"... D is a language with C-like syntax and static typing. It pragmatically combines efficiency, control, and modeling power, with safety and programmer productivity ...":

http://dlang.org/

N1 - mail client: https://www.nylas.com/N1/

App Grid is an alternative to the Software Center:

http://www.appgrid.org/

"... rsnapshot makes it easy to make periodic snapshots of local machines, and remote machines over ssh ...":

http://rsnapshot.org/

Ampache - a web based audio/video streaming application and file manager allowing you to access your music&videos from anywhere, using almost any internet enabled device:

http://ampache.org/

"... Mbox introduces a novel sandbox usage model; when executing a program in the sandbox, Mbox prevents programs from modifying the host filesystem while giving them the impression that they are in fact making those modifications ...":

https://pdos.csail.mit.edu/archive/mbox/

"... LiteStore - a lightweight, self-contained, RESTful, multi-format NoSQL document store server ...":
https://h3rald.com/litestore/

"... saldl - a multi-platform command-line downloader optimized for speed and early preview ...":

https://github.com/saldl/saldl

FrostWire - YouTube downloader, BitTorrent client and media player:

http://www.frostwire.com/

SAWS - a Supercharged AWS CLI:
https://github.com/donnemartin/saws

oVirt is a production-ready virtual machine manager for the datacenter that also provides an awesome KVM management interface for multi-node virtualization:

http://www.ovirt.org/

The Irrlicht Engine is a cross-platform high performance realtime 3D engine written in C++:

http://irrlicht.sourceforge.net/

RPGboss:

http://rpgboss.com/

Stencyl starter is a game creation platform:

http://www.stencyl.com/

Twine is an open-source tool for telling interactive, nonlinear stories:

http://twinery.org/

"... SwiperProxy - a lightning-fast, open source web proxy that is easy for you to run and customize ...:"

https://swiperproxy.github.io/

Mattermost is an open source, on-prem Slack-alternative:

http://www.mattermost.org/

"... ScyllaDB - world's fastest NoSQL column store database ...:"

http://www.scylladb.com/

"... Jaro Mail is an integrated suite of interoperable tools to manage e-mail communication in a private and efficient way, without relying too much on on-line services, in fact encouraging users to store their email locally ...":

https://www.dyne.org/software/jaro-mail/

"... Monkey X free is a next-generation games programming language that allows you to create apps on multiple platforms with the greatest of ease ...":

http://www.monkey-x.com/

"... Apache Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs ...":

http://pig.apache.org/

"... pigz, which stands for parallel implementation of gzip, is a fully functional replacement for gzip that exploits multiple processors and multiple cores to the hilt when compressing data ...":

http://www.zlib.net/pigz/

Libgdx is a Java game development framework that provides a unified API that works across all supported platforms:

https://libgdx.badlogicgames.com/

"... PostInstallerF will install all the software that Fedora doesn't include commonly, after running Fedora for the first time ...":

https://github.com/kuboosoft/postinstallerf

pev - the PE file analysis toolkit:
http://pev.sourceforge.net/

HaxeFlixel is a 2D Game framework that lets you create cross-platform games easier with free, open source technology:
http://haxeflixel.com/

Overlap2D is an open source game UI, level and content editor:

http://overlap2d.com/

"... YARA is a tool aimed at (but not limited to) helping malware researchers to identify and classify malware samples. With YARA you can create descriptions of malware families (or whatever you want to describe) based on textual or binary patterns ...":
https://plusvic.github.io/yara/

CMake is a family of tools designed to build, test and package software:
http://www.cmake.org/

Rainbowstream - terminal-based Twitter client:

http://www.rainbowstream.org/

https://github.com/DTVD/rainbowstream

PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It supports Java, JavaScript, XML, XSL:
http://sourceforge.net/projects/pmd/

"... Kite is a webmail designed to look a lot like gmail and to be easily deployable on a single server ...":

http://khamidou.github.io/kite/

Lumail is a modern console-based email client:

http://lumail.org/

tcpflow is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis and debugging:

https://github.com/simsong/tcpflow

Fervor - a graphical, modeless, cross-platform text editor:
https://github.com/jangler/fervor

"... Bash Scanner is a fast and reliable way to scan your server for outdated software and potential exploits ...":

http://seclist.us/bash-scanner-a-fast-way-to-scan-your-server-for-outdat...

"... DNSCrypt is a protocol that authenticates communications between a DNS client and a DNS resolver. It prevents DNS spoofing. It uses cryptographic signatures to verify that responses originate from the chosen DNS resolver and haven't been tampered with ...":
http://dnscrypt.org/

Spriter free:

http://www.brashmonkey.com/spriter.htm

JOSM is an extensible editor for OpenStreetMap:
https://josm.openstreetmap.de/

easystroke is a gesture-recognition application:

http://sourceforge.net/projects/easystroke/

"... Corebird is a modern, easy and fun Twitter client ...":

http://corebird.baedert.org/

Galaxy Forces 2 - a 2D multiplayer space shooter game:

http://sourceforge.net/projects/galaxyv2/

Endless Sky - a space exploration and combat game similar to Escape Velocity:

http://endless-sky.github.io/

Viper is a binary management and analysis framework dedicated to malware and exploit researchers:

http://viper.li/

OpenVAS is a framework of several services and tools offering a comprehensive and powerful vulnerability scanning and vulnerability management solution:
http://www.openvas.org/index.html

Turbulenz is an HTML5 game engine and server-side APIs available in JavaScript and TypeScript for building and distributing 2D and 3D games that run on platforms that support HTML5 features such as modern browsers without the need for plugins:
https://github.com/turbulenz/turbulenz_engine

Freeminer is a Minecraft-inspired sandbox game:

https://github.com/freeminer/freeminer

"... NASC ... Its an app where you do maths like a normal person. It lets you type whatever you want and smartly figures out what is math and spits out an answer on the right pane. Then you can plug those answers in to future equations and if that answer changes, so does the equations its used in ...":
http://parnold-x.github.io/nasc/

Malheur is a tool for the automatic analysis of malware behavior (program behavior recorded from malicious software in a sandbox environment):

http://www.mlsec.org/malheur/

mitmproxy is a console tool that allows interactive examination and modification of HTTP traffic:
https://mitmproxy.org/doc/mitmproxy.html

NetworkMiner Free is a Network Forensic Analysis Tool (NFAT). NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect operating systems, sessions, hostnames, open ports etc. without putting any traffic on the network:
http://www.netresec.com/?page=NetworkMiner

tcpdump - a powerful command-line packet analyzer:

http://www.tcpdump.org/

"... Malcom is a tool designed to analyze a system's network communication using graphical representations of network traffic, and cross-reference them with known malware sources. This comes handy when analyzing how certain malware species try to communicate with the outside world ...":
https://github.com/tomchop/malcom

Minilens:

http://kobuge-games.github.io/minilens/

Craft:

http://www.michaelfogleman.com/craft/

OpenDungeons is an open source, real time strategy game sharing game elements with the Dungeon Keeper series and Evil Genius. Players build an underground dungeon which is inhabited by creatures. Players fight each other for control of the underground by indirectly commanding their creatures, directly casting spells in combat, and luring enemies into sinister traps:

http://opendungeons.github.io/

Tahoe-LAFS is a Free and Open decentralized cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire file store continues to function correctly, preserving your privacy and security:

https://tahoe-lafs.org/trac/tahoe-lafs

Arx Libertatis is a cross-platform, open source port of Arx Fatalis:

http://arx-libertatis.org/

ioquake3 is a free software first person shooter engine based on the Quake 3: Arena and Quake 3: Team Arena source code:

http://ioquake3.org/

Browsersync:

http://www.browsersync.io/

OpenAge - free clone of the Age of Empires II engine:

http://openage.sft.mx/

Sup is a console-based email client for people with a lot of email:

http://supmua.org/

Notmuch:

http://notmuchmail.org/

Eric is a full featured Python and Ruby editor and IDE:
http://eric-ide.python-projects.org/index.html

Elkarbackup:

http://elkarbackup.github.io/

ZinjaI is a free C/C++ IDE:
http://zinjai.sourceforge.net/index_en.php?page=portada_en.php

Pritunl free VPN server:
http://pritunl.com/

SoftEther VPN:
https://www.softether.org/1-features

sshuttle:

https://github.com/apenwarr/sshuttle

GitPrep - a GitHub clone:

http://gitprep.yukikimoto.com/

Glastopf:

https://github.com/mushorg/glastopf

Sensu Core is an open-source monitoring framework:

https://sensuapp.org/#features

Cowrie is a medium interaction SSH honeypot designed to log brute force attacks and, most importantly, the entire shell interaction performed by the attacker:
https://github.com/micheloosterhof/cowrie

"... Shinken is a monitoring framework. It's a Python Nagios® Core total rewrite enhancing flexibility and large environment management ...":

http://www.shinken-monitoring.org/

Amanda Community Edition - open source backup and recovery software:

http://amanda.zmanda.com/

http://www.zmanda.com/download-amanda.php

Candy — a JavaScript-based multi-user chat client:

http://candy-chat.github.io/candy/

Prosody is a modern XMPP communication server:

https://prosody.im/

"... Cherokee is an innovative, feature rich, lightning fast and easy to configure open source web server designed for the next generation of highly concurrent secured web applications ...":

http://cherokee-project.com/

lighttpd - web server:

http://www.lighttpd.net/

OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response:
http://www.ossec.net/

Consul:

https://www.consul.io/intro/index.html

Attic - a backup software:

https://attic-backup.org/

bareos:

https://www.bareos.org/en/

Archipel is a solution to manage and supervise virtual machines:

http://archipelproject.org/

"... Bro is an open source network security platform that illuminates your network's activity in detail ...":

https://www.bro.org/

DenyHosts is a script intended to be run by Linux system administrators to help thwart SSH server attacks (also known as dictionary based attacks and brute force attacks):

http://denyhosts.sourceforge.net/

Tupi - a design and authoring tool for digital artists interested in 2D Animation, offering an interface experience focused on 8-100 years old kids:

http://www.maefloresta.com/portal/about

"... Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU. Combine statistics from every Riak node in your cluster and forward to Graphite. Track user activity from second to second ...":

http://riemann.io/

strongSwan - IPsec-based VPN Solution:

https://www.strongswan.org/

tinc is a VPN daemon that uses tunnelling and encryption to create a secure private network between hosts on the Internet:

http://www.tinc-vpn.org/

OpenVZ is container-based virtualization for Linux. OpenVZ creates multiple secure, isolated Linux containers (otherwise known as VEs or VPSs) on a single physical server enabling better server utilization and ensuring that applications do not conflict. Each container performs and executes exactly like a stand-alone server; a container can be rebooted independently and have root access, users, IP addresses, memory, processes, files, applications, system libraries and configuration files:

http://openvz.org/Main_Page

Cabot is a free, open-source, self-hosted infrastructure monitoring platform:

http://cabotapp.com/

https://github.com/arachnys/cabot

Xymon is a system for monitoring of hosts and networks, inspired by the Big Brother system. It provides real-time monitoring, an easy web-interface, historical data, availability reports and performance graphs:

http://xymon.sourceforge.net/

Linux Malware Detect (LMD) is a malware scanner that is designed around the threats faced in shared hosted environments:

https://www.rfxn.com/projects/linux-malware-detect/

Fail2ban scans log files and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc.:

http://www.fail2ban.org/

fwknop:

https://www.cipherdyne.org/fwknop/

Backupninja allows you to coordinate system backup by dropping a few simple configuration files into /etc/backup.d/:

https://labs.riseup.net/code/projects/backupninja