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foundry
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
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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.
https://github.com/gakonst/foundry Its dapptools but in rust, which if you don't know what dapptools is I highly recommend this talk https://www.youtube.com/watch?v=N9pJ9JieX10 highly efficient testing framework and good if you are into ultra-optimizations
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.