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invester
Invester, an open source investment tracking software that lets you create a custom dashboard with 10+ real-time widgets. Track your portfolio performance and market trends in real-time with easy-to-use, fully customizable tools that integrate with popular financial data sources.
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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.
I'm personally the author of Feeel, which is a fitness app in Flutter for Android and Linux.
Take a look at this https://github.com/onur-celik/invester
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.