In March 2015, OsiriX version 6.5 was released under a new closed-source license, which upset many people in the open-source community. Instead, the software is now available free as a demo application, known as OsiriX Lite, or as a paid version with full functionality known as OsiriX MD, which is licensed starting at $70 per month. This license convention even enables developers to enhance the product and separately license their version for a fee (assuming they abide by the license requirement).īy contrast, OsiriX started as an open-source project but is no longer truly open-source. What's more, the Horos software is issued under the GNU Lesser General Public License (GPL), which enables users to add their own plugins to Horos and to establish legal protections for their code. This is especially valuable and relevant for people who might want to access or contribute to the source code or integrate it with other software, such as plugin developers, scientists, and academic researchers. Horos is totally free and open-source software (FOSS), which means that its source code is available to anyone who wants to use it.

If you're looking for an alternative to your medical image viewing software, or are just interested in what's out there, here's what you need to know about the differences between the two. However, the products have different functionalities and work very differently in many respects. Horos and OsiriX are the top two medical image viewers for Apple computers.

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