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CuraEngine
CuraEngine is a powerful, fast and robust engine for processing 3D models into 3D printing instruction for Ultimaker and other GCode based 3D printers. It is part of the larger open source project called "Cura". (by ThomasRahm)
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
You can try out the new Tree Support Algorithm in the Cura XMas Alpha release which is a bit less prone to this problem as it usually generates much more sparse trees, but the problem still appears some times.
NOTE:
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Hence, a higher number means a more popular project.