* [shssoichiro/oxipng](https://github.com/shssoichiro/oxipng) [[oxipng](https://crates.io/crates/oxipng)] — Multithreaded PNG optimizer written in Rust. [![Build Status](https://github.com/shssoichiro/oxipng/workflows/oxipng/badge.svg)](https://github.com/shssoichiro/oxipng/actions?query=branch%3Amaster) [![Version](https://img.shields.io/crates/v/oxipng.svg)](https://crates.io/crates/oxipng)
### Utilities
* [1History](https://github.com/1History/1History) — Command line interface to backup Firefox/Chrome/Safari history to one SQLite file [![Build Status](https://github.com/1History/1History/actions/workflows/CI.yml/badge.svg)](https://github.com/1History/1History/actions/workflows/CI.yml)
@ -775,14 +773,6 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
* [jaemk/cached](https://github.com/jaemk/cached) — Simple function caching/memoization
* [mozilla/sccache](https://github.com/mozilla/sccache/) - Shared Compilation Cache, great for Rust compilation [![build badge](https://api.travis-ci.org/mozilla/sccache.svg?branch=master)](https://travis-ci.org/mozilla/sccache)
### Concurrency
* [crossbeam-rs/crossbeam](https://github.com/crossbeam-rs/crossbeam) – Support for parallelism and low-level concurrency in Rust [![build badge](https://api.travis-ci.org/crossbeam-rs/crossbeam.svg?branch=master)](https://travis-ci.org/crossbeam-rs/crossbeam)
* [orium/archery](https://github.com/orium/archery) [[archery](https://crates.io/crates/archery)] — Library to abstract from `Rc`/`Arc` pointer types. [![build badge](https://api.travis-ci.org/orium/archery.svg?branch=master)](https://travis-ci.org/orium/archery)
* [Rayon](https://github.com/rayon-rs/rayon) – A data parallelism library for Rust [![build badge](https://api.travis-ci.org/rayon-rs/rayon.svg?branch=master)](https://travis-ci.org/rayon-rs/rayon)
* [rustcc/coroutine-rs](https://github.com/rustcc/coroutine-rs) – Coroutine Library in Rust [![build badge](https://api.travis-ci.org/rustcc/coroutine-rs.svg?branch=master)](https://travis-ci.org/rustcc/coroutine-rs)
* [zonyitoo/coio-rs](https://github.com/zonyitoo/coio-rs) – Coroutine I/O for Rust [![build badge](https://api.travis-ci.org/zonyitoo/coio-rs.svg?branch=master)](https://travis-ci.org/zonyitoo/coio-rs)
### Cloud
* AWS [[aws](https://crates.io/keywords/aws)]
@ -890,6 +880,14 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
* [crossbeam-rs/crossbeam](https://github.com/crossbeam-rs/crossbeam) – Support for parallelism and low-level concurrency in Rust [![build badge](https://api.travis-ci.org/crossbeam-rs/crossbeam.svg?branch=master)](https://travis-ci.org/crossbeam-rs/crossbeam)
* [orium/archery](https://github.com/orium/archery) [[archery](https://crates.io/crates/archery)] — Library to abstract from `Rc`/`Arc` pointer types. [![build badge](https://api.travis-ci.org/orium/archery.svg?branch=master)](https://travis-ci.org/orium/archery)
* [Rayon](https://github.com/rayon-rs/rayon) – A data parallelism library for Rust [![build badge](https://api.travis-ci.org/rayon-rs/rayon.svg?branch=master)](https://travis-ci.org/rayon-rs/rayon)
* [rustcc/coroutine-rs](https://github.com/rustcc/coroutine-rs) – Coroutine Library in Rust [![build badge](https://api.travis-ci.org/rustcc/coroutine-rs.svg?branch=master)](https://travis-ci.org/rustcc/coroutine-rs)
* [zonyitoo/coio-rs](https://github.com/zonyitoo/coio-rs) – Coroutine I/O for Rust [![build badge](https://api.travis-ci.org/zonyitoo/coio-rs.svg?branch=master)](https://travis-ci.org/zonyitoo/coio-rs)
### Configuration
* [andoriyu/uclicious](https://github.com/andoriyu/uclicious) [[uclicious](https://crates.io/crates/uclicious)] — [libUCL](https://github.com/vstakhov/libucl) based feature-rich configuration library. [![CircleCI](https://circleci.com/gh/vstakhov/libucl.svg?style=svg)](https://app.circleci.com/pipelines/github/vstakhov/libucl)
@ -925,6 +923,41 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
* [vityafx/randomorg](https://github.com/vityafx/randomorg) - A random.org client library. [![Crates badge](https://img.shields.io/crates/v/randomorg.svg)](https://crates.io/crates/randomorg)
* [w3f/schnorrkel](https://github.com/w3f/schnorrkel) - Schnorr VRFs and signatures on the Ristretto group
### Data processing
* [amv-dev/yata](https://github.com/amv-dev/yata) — high perfomance technical analysis library [![Build Status](https://img.shields.io/github/workflow/status/amv-dev/yata/Rust?branch=master)](https://github.com/amv-dev/yata/actions?query=workflow%3ARust)
* [bluss/ndarray](https://github.com/rust-ndarray/ndarray) — N-dimensional array with array views, multidimensional slicing, and efficient operations
* [kernelmachine/utah](https://github.com/kernelmachine/utah) — Dataframe structure and operations in Rust
* [pola-rs/polars](https://github.com/pola-rs/polars) - Fast feature complete DataFrame library ![Build and test](https://github.com/pola-rs/polars/workflows/Build%20and%20test/badge.svg?branch=master)
* [weld-project/weld](https://github.com/weld-project/weld) — High-performance runtime for data analytics applications
### Data streaming
* [infinyon/fluvio](https://github.com/infinyon/fluvio) - Programmable data streaming platform [![CI](https://github.com/infinyon/fluvio/workflows/CI/badge.svg?branch=stable)](https://github.com/infinyon/fluvio/actions)
### Data structures
* [billyevans/tst](https://github.com/billyevans/tst) [[tst](https://crates.io/crates/tst)] — Ternary search tree collection [![build badge](https://api.travis-ci.org/billyevans/tst.svg?branch=master)](https://travis-ci.org/billyevans/tst)
* [contain-rs](https://github.com/contain-rs) — Extension of Rust's std::collections
* [danielpclark/array_tool](https://github.com/danielpclark/array_tool) — Array helpers for Rust. Some of the most common methods you would use on Arrays made available on Vectors. Polymorphic implementations for handling most of your use cases. [![build badge](https://api.travis-ci.org/danielpclark/array_tool.svg?branch=master)](https://travis-ci.org/danielpclark/array_tool)
* [fizyk20/generic-array](https://github.com/fizyk20/generic-array) – a hack to allow for arrays sized by typenums [![build badge](https://api.travis-ci.org/fizyk20/generic-array.svg?branch=master)](https://travis-ci.org/fizyk20/generic-array)
* [garro95/priority-queue](https://github.com/garro95/priority-queue)[[priority-queue](https://crates.io/crates/priority-queue)] — A priority queue that implements priority changes. [![build badge](https://api.travis-ci.org/garro95/priority-queue.svg?branch=master)](https://travis-ci.org/garro95/priority-queue)
* [mrhooray/kdtree-rs](https://github.com/mrhooray/kdtree-rs) — K-dimensional tree in Rust for fast geospatial indexing and nearest neighbors lookup
* [orium/rpds](https://github.com/orium/rpds) [[rpds](https://crates.io/crates/rpds)] — Persistent data structures in Rust. [![build badge](https://github.com/orium/rpds/workflows/CI/badge.svg)](https://github.com/orium/rpds/actions?query=workflow%3ACI)
* [RoaringBitmap/roaring-rs](https://github.com/RoaringBitmap/roaring-rs) – Roaring Bitmaps in Rust
* [tnballo/scapegoat](https://github.com/tnballo/scapegoat) [[scapegoat](https://crates.io/crates/scapegoat)] — Safe, fallible, stack-only alternative to `BTreeSet` and `BTreeMap`. [![GitHub Actions](https://github.com/tnballo/scapegoat/workflows/test/badge.svg?branch=master)](https://github.com/tnballo/scapegoat/actions)
* [xfix/enum-map](https://github.com/xfix/enum-map) [[enum-map](https://crates.io/crates/enum-map)] — An optimized map implementation for enums using an array to store values. [![build badge](https://api.travis-ci.org/xfix/enum-map.svg?branch=master)](https://travis-ci.org/xfix/enum-map)
* [yamafaktory/hypergraph](https://github.com/yamafaktory/hypergraph) [[hypergraph](https://crates.io/crates/hypergraph)] — Hypergraph is a data structure library to generate directed hypergraphs. [![ci](https://github.com/yamafaktory/hypergraph/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/yamafaktory/hypergraph/actions/workflows/ci.yml)
### Data visualization
* [djduque/pgfplots](https://github.com/djduque/pgfplots) [[pgfplots](https://crates.io/crates/pgfplots)] — A Rust library to generate publication-quality figures. [![build](https://github.com/DJDuque/pgfplots/actions/workflows/rust.yml/badge.svg)](https://github.com/DJDuque/pgfplots/actions/workflows/rust.yml)
* [igiagkiozis/plotly](https://github.com/igiagkiozis/plotly) — Plotly for Rust.
* [amv-dev/yata](https://github.com/amv-dev/yata) — high perfomance technical analysis library [![Build Status](https://img.shields.io/github/workflow/status/amv-dev/yata/Rust?branch=master)](https://github.com/amv-dev/yata/actions?query=workflow%3ARust)
* [bluss/ndarray](https://github.com/rust-ndarray/ndarray) — N-dimensional array with array views, multidimensional slicing, and efficient operations
* [kernelmachine/utah](https://github.com/kernelmachine/utah) — Dataframe structure and operations in Rust
* [pola-rs/polars](https://github.com/pola-rs/polars) - Fast feature complete DataFrame library ![Build and test](https://github.com/pola-rs/polars/workflows/Build%20and%20test/badge.svg?branch=master)
* [weld-project/weld](https://github.com/weld-project/weld) — High-performance runtime for data analytics applications
### Data streaming
* [infinyon/fluvio](https://github.com/infinyon/fluvio) - Programmable data streaming platform [![CI](https://github.com/infinyon/fluvio/workflows/CI/badge.svg?branch=stable)](https://github.com/infinyon/fluvio/actions)
### Data structures
* [billyevans/tst](https://github.com/billyevans/tst) [[tst](https://crates.io/crates/tst)] — Ternary search tree collection [![build badge](https://api.travis-ci.org/billyevans/tst.svg?branch=master)](https://travis-ci.org/billyevans/tst)
* [contain-rs](https://github.com/contain-rs) — Extension of Rust's std::collections
* [danielpclark/array_tool](https://github.com/danielpclark/array_tool) — Array helpers for Rust. Some of the most common methods you would use on Arrays made available on Vectors. Polymorphic implementations for handling most of your use cases. [![build badge](https://api.travis-ci.org/danielpclark/array_tool.svg?branch=master)](https://travis-ci.org/danielpclark/array_tool)
* [fizyk20/generic-array](https://github.com/fizyk20/generic-array) – a hack to allow for arrays sized by typenums [![build badge](https://api.travis-ci.org/fizyk20/generic-array.svg?branch=master)](https://travis-ci.org/fizyk20/generic-array)
* [garro95/priority-queue](https://github.com/garro95/priority-queue)[[priority-queue](https://crates.io/crates/priority-queue)] — A priority queue that implements priority changes. [![build badge](https://api.travis-ci.org/garro95/priority-queue.svg?branch=master)](https://travis-ci.org/garro95/priority-queue)
* [mrhooray/kdtree-rs](https://github.com/mrhooray/kdtree-rs) — K-dimensional tree in Rust for fast geospatial indexing and nearest neighbors lookup
* [orium/rpds](https://github.com/orium/rpds) [[rpds](https://crates.io/crates/rpds)] — Persistent data structures in Rust. [![build badge](https://github.com/orium/rpds/workflows/CI/badge.svg)](https://github.com/orium/rpds/actions?query=workflow%3ACI)
* [RoaringBitmap/roaring-rs](https://github.com/RoaringBitmap/roaring-rs) – Roaring Bitmaps in Rust
* [tnballo/scapegoat](https://github.com/tnballo/scapegoat) [[scapegoat](https://crates.io/crates/scapegoat)] — Safe, fallible, stack-only alternative to `BTreeSet` and `BTreeMap`. [![GitHub Actions](https://github.com/tnballo/scapegoat/workflows/test/badge.svg?branch=master)](https://github.com/tnballo/scapegoat/actions)
* [xfix/enum-map](https://github.com/xfix/enum-map) [[enum-map](https://crates.io/crates/enum-map)] — An optimized map implementation for enums using an array to store values. [![build badge](https://api.travis-ci.org/xfix/enum-map.svg?branch=master)](https://travis-ci.org/xfix/enum-map)
* [yamafaktory/hypergraph](https://github.com/yamafaktory/hypergraph) [[hypergraph](https://crates.io/crates/hypergraph)] — Hypergraph is a data structure library to generate directed hypergraphs. [![ci](https://github.com/yamafaktory/hypergraph/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/yamafaktory/hypergraph/actions/workflows/ci.yml)
### Data visualization
* [djduque/pgfplots](https://github.com/djduque/pgfplots) [[pgfplots](https://crates.io/crates/pgfplots)] — A Rust library to generate publication-quality figures. [![build](https://github.com/DJDuque/pgfplots/actions/workflows/rust.yml/badge.svg)](https://github.com/DJDuque/pgfplots/actions/workflows/rust.yml)
* [igiagkiozis/plotly](https://github.com/igiagkiozis/plotly) — Plotly for Rust.