Used by more than 1.5 million people in 120 countries, SugarCRM is an extremely popular, award-winning open source CRM solution. The website link above is primarily devoted to selling cloud-based subscriptions, but you can find the open source version at SugarCRM.com/download. Operating System: Windows, Linux, OS X.
SplendidCRM calls itself "the clear and obvious choice for companies that prefer Microsoft IIS to Apache and SQL Server to MySQL." It's a Windows-based CRM solution that comes in multiple cloud and on-premise versions. Operating System: Windows.
Standards-based OpenKM offers "full document management capabilities including version control and file history, metadata, scanning, workflow, search, and more." It comes in a free community version, paid professional version or paid cloud version. All of the editions run in a web browser. Operating System: OS Independent.
Designed for both large and small organizations, LogicalDOC promises intuitive and accessible document management that can help users achieve a paperless office. The community version is free, or users can pay for the professional or cloud versions. Operating System: OS Independent.
Magento claims to have powered more Internet Retailer Top 1000 merchants than anyone else for three years in a row and to process more than $50 billion in transactions each year. In addition to the community edition, it comes in enterprise and enterprise cloud editions. Operating System: Windows, Linux, OS X.
Similar to Basecamp, Collabtive offers web-based project management that includes time-tracking and reporting. Download the software and host it yourself, or purchase on a SaaS basis. Operating System: OS Independent.
Group-Office combines enterprise CRM and groupware features like calendar and email. The paid professional version adds helpdesk, mobile sync, time-tracking, projects and document editing. A hosted cloud version is also available. Operating System: OS Independent.
Used by more than 500 million people, Zimbra offers a range of email and messaging tools for companies of all sizes, and it comes in both free and paid versions. Its browser-based interface was "built for the cloud, both public and private." Operating System: Linux, Unix, OS X.
This groupware tool includes wikis, blogs, file repositories, event calendars, bookmark directories, discussion boards and multimedia galleries. It comes in free and commercially supported versions, and it is also available as an on-demand cloud service. Operating System: Windows, Linux, OS X.
52. Feng Office
Feng Office boasts more than 2 million users at organizations like University of California Berkeley, Airbus, NASA, Porsche Design, Xerox and the NBA. It comes in both free and paid community editions, as well as professional and enterprise editions and the Feng Sky cloud-based option. Operating System: Windows, Linux, OS X.
EGroupware emphasizes flexibility, offering configurable custom fields and making it easy to integrate data from other applications. In addition to the free community edition, it also comes in a full version for on-premise deployment and a cloud version with several pricing tiers. Operating System: OS Independent.
With nearly 600,000 downloads, OpenEMM claims to be the "most successful e-mail software worldwide." It's available on a SaaS basis, as well as on-premise versions. Operating System: Windows, Linux.
This open source e-mail marketing solution was used to send more than 22 billion messages last year. Subscriptions to the cloud-based service start at just $1. Operating System: OS Independent.
Used by organizations like the World Wildlife Federation, Toyota, Cox Communications, Hyundai and Danone, Odoo promises to simplify omnichannel sales. It comes in a free community version or paid enterprise and online versions. Operating System: Windows, Linux.
Openbravo offers specialized ERP software for retailers, as well as a business suite for companies of all types. The open source version can be found on the company's Community Hub; paid professional and enterprise versions are available through its partners. Operating System: OS Independent.
58. xTuple PostBooks
Targeted at manufacturers and distributors, xTuple claims to be the "world's #1 open source ERP." It offers multiple editions, including a cloud hosted version. Operating System: Windows, Linux, OS X.
Compiere offers features like warehouse management, purchasing, manufacturing, sales, ecommerce, customer service, materials management, order management, financial management and reporting. It's paid professional and enterprise versions are built to be easily deployed on Amazon's EC2 service. Operating System: Windows, Linux, OS X.
This solution combines ERP and CRM functionality and is designed to help business owners manager their companies more effectively. It has pre-loaded machine images on Amazon EC2 that make it possible to get the software up and running in the cloud in just minutes. Operating System: Windows, Linux.
With 3 million users, OrangeHRM claims to be the "world's most popular open source HR software." In addition to the open source version, it comes in profession and enterprise versions for on-premise deployment, and a Live version that runs in the cloud. Operating System: Windows, Linux, OS X.
This web-based invoicing system is easy to use, sending electronic invoices as PDF files. You can download the code and host it on your own server or use the hosting services provided by Smarter Invoices. Operating System: OS Independent.
This open source school management software claims to increase student achievement and teacher performance. It is available in the open source version, a Pro version for small to medium-sized districts, and a highly scalable, cloud-based Surge version for large districts. Operating System: OS Independent.
This learning management system humbly hopes to "change the world." It comes in K-12 and higher education versions, and the website has a catalog of courses offered by organizations that use its software. Both free and paid cloud versions are available. Operating System: Linux, Unix, OS X.
The latest version of this employee time tracking system includes a facial recognition feature that allows workers to clock in just by looking at a smartphone or tablet. Besides the open source version, it comes in professional, corporate or enterprise versions, and cloud hosting is available. Operating System: Windows, Linux, OS X.