OpenRefine is a free, open source power tool for working with messy data and improving it
- datacleansing
- data-analysis
- java
- opendata
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Charts library for Android compatible with API 8+, several chart types with scaling, scrolling and animations 📊
Statistical Machine Intelligence & Learning Engine
- machine-learning
- regression
- clustering
- manifold-learning
Horizon - Simple visual equaliser for Android
DecoView: Android arc based animated charting library