Cyn.in describes itself as "the first open source collaborative knowledge management appliance." It's available three ways: as a free community download, as a paid on-premise appliance or on an on-demand SaaS basis. Operating System: Windows, Linux, OS X.
42. Feng Office
Used by more than 1 million people in 150 different countries, Feng Office offers project management, billing, document management, messaging and scheduling capabilities. Feng Sky is the name for the paid, cloud-based version, and Feng Onsite is the self-hosted version, which comes in both free and paid versions. Operating System: Windows, Linux, OS X.
Egroupware's website boasts that it is "the leading online collaboration tool and the top choice for big enterprises, small businesses and teams within and across organizations all over the globe." It offers both community and enterprise editions, as well as paid hosting with several different pricing tiers. Operating System: OS Independent.
TeamLab combines document editing, mail, CRM and project management into a single package. Download the open source version, pay for a supported enterprise version, or use the hosted cloud version. Unlike most other projects, TeamLab also offers a free cloud version for non-profits. Operating System: OS Independent.
This collaboration solution includes cloud storage, mobile document access, file syncing, messaging and other capabilities. It's available in free or paid private server versions or as a cloud-based service. Operating System: Linux.
Downloaded more than 450,000 times, OpenEMM claims to be the "first open source application for e-mail marketing." See the link above for the open source version, or visit the Agnitas website for information on commercial support and eMM-Xpress, the cloud-based version of the same software. Operating System: Windows, Linux.
According to its website, phpList is "the world's most popular open source email campaign manager." In addition to the free download, it comes in a hosted version with fees based on the number of messages sent or the number of subscribers. Operating System: OS Independent.
Formerly known as Open ERP, Odoo boasts more than 2 million users, including Danone, Canonical and Singer. It includes more than 3,000 individual apps that work together to help people manage their businesses. A free open source download is available, but it's primarily sold on a SaaS basis. Operating System: Windows, Linux.
Award-winning Openbravo offers open source ecommerce and ERP solutions. The supported commercial versions are sold through third-party partners, but the company also offers a free download and hosted on-demand versions. Operating System: OS Independent.
50. xTuple PostBooks
The self-proclaimed "world's #1 open source ERP," xTuple includes tools for accounting, time & expense, CRM, sales, purchasing, manufacturing, inventory and distribution. Postbooks is the free open source version, but it comes in many other versions which can be download or used in the cloud. Operating System: Windows, Linux, OS X.
Compiere claims to be "the most modern, adaptable and affordable ERP solution." It comes in community and enterprise editions, and while it isn't available in a SaaS version, it can be easily deployed to Amazon Web Services. Operating System: Windows, Linux, OS X.
This application includes both ERP and CRM functionality, plus ecommerce, business intelligence and more. In addition to the open source version, there's also a paid professional version, and the company also has an easy-to-deploy Amazon Machine Image (AMI) that allows paid license holders to get Opentaps up and running on Amazon's cloud in just minutes. Operating System: Windows, Linux.
Used by Lufthansa, Sandals, Red Hat, Stanley Black & Decker and many other companies, OrangeHRM calls itself "the world's most popular HR software." It comes in open source, professional or enterprise versions, and all three can be deployed via OrangeHRM Live, a hosting service powered by Rackspace. Operating System: Windows, Linux, OS X.
WaypointHR software is available as an open source download or in a cloud version, which offers additional features. It places the emphasis on security and ease of use while tracking employee demographic information and employment records. Operating System: OS Independent.
SimpleInvoices describes itself as "free web based invoicing developed by the community, for the community." You can run it on a standalone Windows PC, set it up on your own Web server or use hosting services provided by a third party partner. Operating System: OS Independent.
56. Onepoint Project
Onepoint combines both project management (PM) and project portfolio management (PPM) capabilities into a single package. It comes in many different commercial and open source versions, including some cloud editions. Operating System: Windows, Linux, OS X.
Designed for educational institutions of all sizes, this student information system tracks demographics, grades, report cards, attendance and much more. It comes in community (free), school (paid) and district (paid) versions, and cloud-based hosting is also available. Operating System: OS Independent.
Instructure's Canvas learning management system aims to make it easier to implement distance learning or 1:1 learning initiatives in K-12 or higher education. The main website (link above) offers information on the commercial and cloud versions; the easiest way to get the open source version is from GitHub. Operating System: Linux, Unix, OS X.
TimeTrex tracks and manages employee scheduling, attendance, job costing and payroll. You can deploy it on premise or use the cloud hosted version. Operating System: Windows, Linux, OS X.
Connect to your network securely using OpenVPN. It's available as a paid enterprise solution, a free download or as a cloud-based service. Operating System: Windows, Linux, OS X, Android, iOS.