WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time. The core software is built by hundreds of community volunteers, and when you're ready for more there are thousands of plugins and themes available to transform your site into almost anything you can imagine. Over 60 million people have chosen WordPress to power the place on the web they call "home" we'd love you to join the family.

Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage. While the default package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use framework with the power for professional applications.

Dotclear is an open-source web publishing software created in 2002 by Olivier Meunier. A one man's project at first, Dotclear soon gathered a team comprising different personalities with various backgrounds. The project's purpose is to provide a user-friendly tool allowing anyone to publish on the web, regardless of their technical skills.

SitePad Build Professional websites using an Easy to Use Editor and Publish static web pages 380+ Responsive Themes which cover a wide range of categories like Blog, Business, Portfolio, Restaurants, Travel and many more 80+ Widgets like Image/Video Slider, Image Galleries, Rich Text, Video, Audio, Service Box, Google Maps, Contact Form, Social Media and many more to help you build your website.

b2evolution is an advanced weblog tool, i-e software allowing you to run your own blogs, newsfeeds or even photo stream. b2evolution is a medium scale CMS centered around the Blog concept, fully featured with multiple blogs, content/presentation separation, full user management, full internationalization (i18n), workflow management... and extending towards features normally provided by Wikis, Trackers or hierarchy driven CMSes.

Textpattern is a web application designed to help overcome the hurdles to publishing online, and to simplify the production of well-structured, standards-compliant web pages. Textpattern is a flexible, elegant and easy-to-use content management system. It is both free and open source.

Nibbleblog Easy, fast and free CMS Blog The database used is based on XML files and this way it is not necessary to use MySQL or similar DBMS.

FlatPress is a blogging engine that saves your posts as simple text files. Forget about SQL! You just need some PHP.

PivotX is free software to help you maintain dynamic sites such as weblogs, online journals and other frequently updated websites in general. It's written in PHP and uses MySQL or flat files as a database. PivotX is also a great tool to maintain more complex websites as well. Its powerful core and flexible template system make it easy for developers to adjust and extend. Whether you want an easy-to-use, robust blogging tool or are looking to push things to the max - PivotX offers the best of both worlds.

Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone.

ProcessWire is a free PHP5 content management system and framework (open source CMS/CMF) built to save you time and work the way you do. ProcessWire gives simpler and stronger control over your pages, fields, templates and markup at any scale. And it provides a powerful template system that works the way you already do. ProcessWire’s jQuery-inspired API makes working with your content easy and enjoyable. Managing and developing a site in ProcessWire is shockingly simple–and fun–compared to what you may be used to.

Grav is a Fast, Simple, and Flexible file-based Web-platform. Although Grav follows principles similar to other flat-file CMS platforms, it has a different design philosophy than most. The underlying architecture of Grav is built using well established and best-in-class technologies.

Sitemagic CMS is the world's most beautiful Content Management System. With Sitemagic CMS you can create some of the most stunning and captivating websites on the planet. The built-in Designer lets you create truly professional designs in literally minutes with simple point and click. The Editor lets you easily modify and lay out your content. The new cards inspired design concept everybody is talking about is built right into the new Editor, making your website the most hip on the web. And while Sitemagic CMS is packed with great new features, it is still the most user friendly CMS on the market. It ships with tips and tricks built right in, making sure you get the most out of your new Content Management System.

ImpressPages CMS is user friendly software. Its tools enable user to manage the content of website in a convenient way. The advantage of ImpressPages is the opportunity to see how the website which is being edited will look like after the changes. All the information could be administered directly in the website. There is no need to perform monotonous lay-out tasks. Insertion of text, pictures, galleries and video is very simple.

Monstra is a fast and small content management system written in PHP! Monstra is the best CMS to manage a small-business website. Monstra provides amazing api's for plugins, themes and core developers!

Bludit is a simple web application to make your own blog in seconds, it's completly free and open source. Bludit uses flat-files (text files in JSON format) to store the posts and pages, you don't need to install or configure a database.

Mahara is an open source e-portfolio system with a flexible display framework. Mahara, meaning 'think' or 'thought' in Te Reo Māori, is user centred environment with a permissions framework that enables different views of an e-portfolio to be easily managed. Mahara also features a weblog, resume builder and social networking system, connecting users and creating online learner communities.

Fork is an open source CMS that will rock your world. Fork CMS is dedicated to creating a user friendly environment to build, monitor and update your website. Fork takes great pride in being the Content Management System of choice for beginners and professionals.

Kirby is a file-based CMS with a beautiful web interface and thousands of customers world-wide. Its flexible data structure and powerful template engine makes it easy to develop fast and high-standard websites in no time. From portfolios, to blogs, to full-blown company sites, Kirby has all you need. Being file-based comes with extra perks, such as version controllable content, super-easy deployments and blazing-fast performance.

Tiki is a CMS/Groupware which offers a large number of features "out-of-the-box" arguably more than any other Open Source Web Application. It can be overwhelming, even to an experienced user or administrator. Tiki has all the classic CMS and portal features of other applications, but also includes features not available anywhere else. Tiki is highly configurable and modular; all features are optional and can be administered through Tiki's browser-based interface.

WHMCS is an all-in-one client management, billing and support solution for online businesses. WHMCS handles everything from signup to termination, with automated billing, provisioning and management. With WHMCS, you're in control with a very powerful business automation tool. You will need a License to install and run WHMCS.

LiteCart is a free e-commerce platform focusing on simplicity and lightweight with logical design and a simple to use interface. LiteCart is known for it's it's small footprint and minimalistic design. The extreme performance is making it one of the world's highest performing e-commerce frameworks. Founded by swedish developer T. Almroth.

ClientExec offers online help desk software intended to enhance the ability of small and mid-sized hosting businesses to manage help and support issues. Because the online help desk software can be accessed from any web browser, managers and staff can increase the flexibility and effectiveness with which they address client support issues. ClientExec's software includes an easy-to-use interface that enhances communication between clients and staff. E-mail messages sent through the online help desk software are automatically routed and tracked, so you don't have to spend time chasing after lost messages. Support tickets can be quickly sorted, filtered, and assigned to individual team members, ensuring that the tickets are addressed in the most efficient possible manner. You will need to purchase a license to use Clientexec.

MyBB is a free bulletin board system software package developed by the MyBB Group. A lot of thought has gone into the MyBB interface to make it easy to use. MyBB uses a standard discussion board structure, so your visitors will feel familiar with the way MyBB works.

Vanilla Forums are open-source, standards-compliant, customizable discussion forums.

It is specially made to help small communities grow larger through SEO mojo, totally customizable social tools, and great user experience. Vanilla is also built with integration at the forefront, so it can seamlessly integrate with your existing website, blog, or custom-built application.

FluxBB is a free open source forum application designed to be fast, light and user friendly. FluxBB's code, written in PHP, has a proven track record of stability and security. FluxBB is being actively developed.

TCExam is a FLOSS system for electronic exams (also know as CBA - Computer-Based Assessment, CBT - Computer-Based Testing or e-exam) that enables educators and trainers to author, schedule, deliver, and report on quizzes, tests and exams.

Omeka is a free, flexible, and open source web-publishing platform for the display of library, museum, archives, and scholarly collections and exhibitions. Omeka makes launching an online exhibition as easy as launching a blog. Omeka is designed with non-IT specialists in mind, allowing users to focus on content and interpretation rather than programming. It brings Web 2.0 technologies and approaches to academic and cultural websites to foster user interaction and participation.

Piwigo is a photo gallery software for the web, built by an active community of users and developers. Extensions make Piwigo easily customizable. Icing on the cake, Piwigo is free and opensource.

Coppermine is a multi-purpose fully-featured and integrated web picture gallery script written in PHP using GD or ImageMagick as image library with a MySQL backend. CPG is so fully featured it's not enough to fully list them.

TinyWebGallery is a free php based photo album / gallery that is very easy to install, extremely user friendly, does not need a database (uses xml files) but still has all the features you should expect and much more!

TinyWebGallery can be configured very fast for a professional gallery like a model agency but also for the pictures from the last ski holiday! Just check out the demos and the list of all functions.

Monsta FTP is a free web-based FTP/SFTP file manager that connects you to your server to upload, download, and edit files directly from any browser. Features include a responsive interface, login manager, code-friendly editor, zip uploads (to extract on server), drag and drop folders and files from your desktop, download multiple files as a zip, view file properties, and chmod.

Group Office is an enterprise CRM and collaboration tool. Share projects, calendars, files and e-mail online with co-workers and clients. Easy to use and fully customizable.

Zurmo is an Open Source Customer Relationship Management (CRM) application that is mobile, social, and gamified. We use a test-driven methodology for building every part of the application. This means you can create and maintain a custom-built CRM system with the assurance that future updates are not going to break your installation.

phpList is an open-source newsletter manager. phplist is free to download, install and use, and is easy to integrate with any website. phplist is downloaded more than 10000 times per month.

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 for maximum compatibility across browsers. SquirrelMail has all the functionality like email client, including strong MIME support, address books, and folder manipulation.

RainLoop webmail Simple, modern & fast web-based email client. RainLoop webmail was designed with efficient memory use in mind, so it can work fine even on low-end web servers. Regardless of mailbox size and number of mails in it, memory use per active user is always kept at a minimum, even when very large mails are processed.

DokuWiki is a standards compliant, simple to use Wiki, mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain readable outside the Wiki and eases the creation of structured texts. All data is stored in plain text files, no database is required.

PmWiki is a wiki-based system for collaborative creation and maintenance of websites. PmWiki pages look and act like normal web pages, except they have an "Edit" link that makes it easy to modify existing pages and add new pages into the website, using basic editing rules. You do not need to know or use any HTML or CSS. Page editing can be left open to the public or restricted to small groups of authors.

MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis. MediaWiki is designed to be run on a large server farm for a website that gets millions of hits per day. MediaWiki is an extremely powerful, scalable software and a feature-rich wiki implementation that uses PHP to process and display data stored in a database, such as MySQL.

Seo Panel A complete open source seo control panel for managing search engine optimization of your websites. Seo Panel is a seo tool kit includes latest hot seo tools to increase and track the performace of your websites. Any one can easily develop and install required plugins for their seo panel.

YOURLS is a small set of PHP scripts that will allow you to run your own URL shortening service (a la TinyURL). You can make it private or public, you can pick custom keyword URLs, it comes with its own API. You will love it.

Form Tools is a PHP / MySQL script that provides any existing web form with a backend database and a user-friendly interface to manage the form submission data.

webtrees is the web's leading on-line collaborative genealogy application. It is open source software, and costs $ zero - yes, that means totally FREE! All you need to use it is a website with PHP and MySQL installed. It works from standard GEDCOM files, and is therefore compatible with every major desktop application; and it aims to be efficient and effective by using the right combination of third-party tools, design techniques and open standards.

Hesk is Free PHP Help Desk Software that runs with a MySQL database. It allows you to setup a web based ticket support system (helpdesk) for your website. Once the Help Desk Software is installed your customers will be able to submit support tickets and staff will have an easy-to-use web interface to manage customer support requests.

Live helper chat is Free & Flexible & Open source - Live Support chat for your website. Web and desktop clients. XMPP notifications, GTalk, Jabber, OpenFire, Chrome extension, Node.js support, MySQL, PostgreSQL.

HelpDeskZ is a FREE and Open Source help desk solution for your business. It is easily integrated to your site and support requests can be created via email or web-based forms. It will give you a friendly interface for your site's tickets management. You can create a wide knowledge base for your customers and with the opportunity to create Canned Responses for the most popular requests, your will improve your support sytem productivity. In resume, powerful, easy to use, reliable, open source and FREE.

phpMyFAQ is an open source FAQ system using PHP. phpMyFAQ is a multilingual, completely database-driven FAQ-system. It supports various databases to store all data, PHP 5.3.3 (or higher) is needed in order to access this data. phpMyFAQ also offers a multi-language Content Management-System with a WYSIWYG editor and an Image Manager, flexible multi-user support with user and group based permissions on categories and records, a wiki-like revision feature, a news system, user-tracking, language modules, enhanced automatic content negotiation, templates, extensive XML-support, PDF-support, a backup-system, a dynamic site map, related articles, tagging, RSS feeds, built-in spam protection systems, LDAP support, Twitter and Facebook support and an easy to use installation script.

phpMyAdmin is a free software tool written in PHP intended to handle the administration of MySQL over the World Wide Web. phpMyAdmin supports a wide range of operations with MySQL. The most frequently used operations are supported by the user interface (managing databases, tables, fields, relations, indexes, users, permissions, etc), while you still have the ability to directly execute any SQL statement.

SIDU stands for SQL Select Insert Delete Update. SIDU is a FREE database client working via web browser. SIDU is a simple, intuitive and easy database admin tool. SIDU works via web browsers such as Firefox, IE, Opera, Safari, Chrome, etc. SIDU looks like database font-end software GUI rather than web pages. SIDU is not only a joy tool, it helps you to have an easy life with databases, and enjoy the relaxation at work.

Adminer is a full-featured database management tool written in PHP. Conversely to phpMyAdmin, Adminer consist of a single file ready to deploy to the target server. Adminer is available for MySQL, PostgreSQL, SQLite, MS SQL and Oracle.

LimeSurvey (formerly PHPSurveyor) is an open source online survey application written in PHP based on a MySQL, PostgreSQL or MSSQL database. It enables users without coding knowledge to develop, publish and collect responses to surveys. Surveys can include branching, custom preferred layout and design (using a web template system), and can provide basic statistical analysis of survey results.

Advanced Poll is a polling system with powerful administration tool. It features: multiple polls, templates, unlimited options, multi-language support, IP-Logging, IP-Locking, cookie support, comment feature, vote expire feature, random poll support and more.

Logaholic is a powerful web analytics solution that delivers reliable, objective information about the performance of your web site content, traffic, keywords and marketing. Get useful insights that will help you improve your site today. Logaholic's low impact Javascript tracking tags ensure that collecting data won't slow down your website. If tracking should fail, it does so without delays in load time, invisible to the user.

Collabtive is web-based project management software. Collabtive is intended for small to medium-sized businesses and freelancers. Collabtive is cloud based groupware easy and efficient for your projects.

qdPM is a free web-based project management tool suitable for a small team working on multiple projects. It is fully configurable. You can easy manage Projects, Tasks and People. Customers interact using a Ticket System that is integrated into Task management.

Kanboard is a project management software that uses the Kanban methodology. Kanboard is not for everybody, it's made for people who want to manage their projects efficiently and simply.

LuxCal is an innovative web based event calendar for home use and small businesses. It is easy to setup and allows easy and fast management of your calendar events at home, in the office, on business trips or when on holiday. LuxCal is feature rich, has been designed for user-friendliness and will help you to make error-free data inputs. The user interface colors are easy to customize.

selfoss is a new multipurpose rss reader, live stream, mashup, aggregation web application. selfoss supports all modern browsers, including Mozilla Firefox, Safari, Google Chrome, Opera and Internet Explorer. You can easily add your own data sources. Spouts (aka plugins) fetch the content from the different sources.