Based on our record, Polar Cloud seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Do you need to access your printer over the internet? Possibly not. But your position is that BL are sending data to their cloud service without good reason. That it offers a feature not provided by Octoprint and Mainsail is that good reason. There are even 3rd party services for Octoprint to ADD this functionality and they charge money for it e.g. https://polar3d.com/. Source: about 1 year ago
Polar Cloud is hosted in the west and in my opinion integrates better with the printer than Flashcloud. Source: over 2 years ago
Have 3 flashforge guider IIs that connect to polar cloud, https://polar3d.com/. Don’t know if this is a flashforge program or 3rd party. There is a setting to allow for polar cloud connect. Source: over 2 years ago
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MatterControl - MatterControl is a free, open source app that lets you organize and manage your 3D prints.
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AstroPrint - Slice, Store, and Print your 3D files from any web enabled device.
ChituBox - Slicer compatible with a wide range of DLP/LCD/SLA 3D printers.