Most downloaded Rust crates (last 90 days)

1. 1
   hashbrown↗

   ● Rust

   A Rust port of Google's SwissTable hash map

   v0.17.1
   ⤓869.4Mdownloads
2. 2
   syn↗

   ● Rust

   Parser for Rust source code

   v3.0.9
   ⤓850Mdownloads
3. 3
   getrandom↗

   ● Rust

   A small cross-platform library for retrieving random data from system source

   v0.4.3
   ⤓775.8Mdownloads
4. 4
   rand↗

   ● Rust

   Random number generators and other randomness functionality.

   v0.10.3
   ⤓608.3Mdownloads
5. 5
   rand_core↗

   ● Rust

   Core random number generator traits and tools for implementation.

   v0.1.1
   ⤓604.6Mdownloads
6. 6
   bitflags↗

   ● Rust

   A macro to generate structures which behave like bitflags.

   v2.13.2
   ⤓568.9Mdownloads
7. 7
   thiserror↗

   ● Rust

   derive(Error)

   v2.0.21
   ⤓505.8Mdownloads
8. 8
   thiserror-impl↗

   ● Rust

   Implementation detail of the `thiserror` crate

   v2.0.21
   ⤓505.7Mdownloads
9. 9
   windows-sys↗

   ● Rust

   Rust for Windows

   v0.61.2
   ⤓503.8Mdownloads
10. 10
    base64↗

    ● Rust

    encodes and decodes base64 as bytes or utf8

    v0.23.1
    ⤓496.9Mdownloads
11. 11
    quote↗

    ● Rust

    Quasi-quoting macro quote!(...)

    v1.0.47
    ⤓471.3Mdownloads
12. 12
    libc↗

    ● Rust

    Raw FFI bindings to platform libraries like libc.

    v0.2.191
    ⤓469.1Mdownloads
13. 13
    indexmap↗

    ● Rust

    A hash table with consistent order and fast iteration.

    v2.14.2
    ⤓467.2Mdownloads
14. 14
    proc-macro2↗

    ● Rust

    A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case.

    v1.0.107
    ⤓463.5Mdownloads
15. 15
    memchr↗

    ● Rust

    Provides extremely fast (uses SIMD on x86_64, aarch64 and wasm32) routines for 1, 2 or 3 byte search and single substring search.

    v2.8.3
    ⤓450.9Mdownloads
16. 16
    itertools↗

    ● Rust

    Extra iterator adaptors, iterator methods, free functions, and macros.

    v0.15.0
    ⤓444.6Mdownloads
17. 17
    unicode-ident↗

    ● Rust

    Determine whether characters have the XID_Start or XID_Continue properties according to Unicode Standard Annex #31

    v1.0.27
    ⤓442.4Mdownloads
18. 18
    cpufeatures↗

    ● Rust

    Lightweight runtime CPU feature detection for aarch64, loongarch64, and x86/x86_64 targets, with no_std support and support for mobile targets including Android and iOS

    v0.3.1
    ⤓431.6Mdownloads
19. 19
    cfg-if↗

    ● Rust

    A macro to ergonomically define an item depending on a large number of #[cfg] parameters. Structured like an if-else chain, the first matching branch is the item that gets emitted.

    v1.0.5
    ⤓431Mdownloads
20. 20
    serde_json↗

    ● Rust

    A JSON serialization file format

    v1.0.154
    ⤓415.8Mdownloads
21. 21
    serde↗

    ● Rust

    A generic serialization/deserialization framework

    v1.0.229
    ⤓414.2Mdownloads
22. 22
    itoa↗

    ● Rust

    Fast integer primitive to string conversion

    v1.0.18
    ⤓409.7Mdownloads
23. 23
    serde_derive↗

    ● Rust

    Macros 1.1 implementation of #[derive(Serialize, Deserialize)]

    v1.0.229
    ⤓402Mdownloads
24. 24
    digest↗

    ● Rust

    Traits for cryptographic hash functions and message authentication codes

    v0.11.3
    ⤓400.5Mdownloads
25. 25
    block-buffer↗

    ● Rust

    Buffer types for block processing of data

    v0.12.1
    ⤓395Mdownloads
26. 26
    rand_chacha↗

    ● Rust

    ChaCha random number generator

    v0.10.0
    ⤓392Mdownloads
27. 27
    crypto-common↗

    ● Rust

    Common traits used by cryptographic algorithms

    v0.2.2
    ⤓388.6Mdownloads
28. 28
    log↗

    ● Rust

    A lightweight logging facade for Rust

    v0.4.35
    ⤓376.3Mdownloads
29. 29
    serde_core↗

    ● Rust

    Serde traits only, with no support for derive -- use the `serde` crate instead

    v1.0.229
    ⤓373.1Mdownloads
30. 30
    socket2↗

    ● Rust

    Utilities for handling networking sockets with a maximal amount of configuration possible intended.

    v0.6.5
    ⤓370.2Mdownloads
31. 31
    smallvec↗

    ● Rust

    'Small vector' optimization: store up to a small number of items on the stack

    v1.16.5
    ⤓370Mdownloads
32. 32
    once_cell↗

    ● Rust

    Single assignment cells and lazy values.

    v1.21.4
    ⤓368.8Mdownloads
33. 33
    cc↗

    ● Rust

    A build-time dependency for Cargo build scripts to assist in invoking the native C compiler to compile native C code into a static archive to be linked into Rust code.

    v1.11.1
    ⤓368.1Mdownloads
34. 34
    heck↗

    ● Rust

    heck is a case conversion library.

    v0.5.0
    ⤓366.7Mdownloads
35. 35
    sha2↗

    ● Rust

    Pure Rust implementation of the SHA-2 hash function family including SHA-224, SHA-256, SHA-384, and SHA-512.

    v0.11.1
    ⤓365.3Mdownloads
36. 36
    autocfg↗

    ● Rust

    Automatic cfg for Rust compiler features

    v1.5.1
    ⤓363.6Mdownloads
37. 37
    winnow↗

    ● Rust

    A byte-oriented, zero-copy, parser combinators library

    v1.0.5
    ⤓360.6Mdownloads
38. 38
    regex-syntax↗

    ● Rust

    A regular expression parser.

    v0.8.11
    ⤓357.4Mdownloads
39. 39
    rustix↗

    ● Rust

    Safe Rust bindings to POSIX/Unix/Linux/Winsock-like syscalls

    v1.1.6
    ⤓349.5Mdownloads
40. 40
    regex-automata↗

    ● Rust

    Automata construction and matching using regular expressions.

    v0.4.18
    ⤓346.8Mdownloads
41. 41
    shlex↗

    ● Rust

    Split a string into shell words, like Python's shlex.

    v2.0.1
    ⤓342Mdownloads
42. 42
    zmij↗

    ● Rust

    A double-to-string conversion algorithm based on Schubfach and xjb

    v1.0.23
    ⤓340.7Mdownloads
43. 43
    linux-raw-sys↗

    ● Rust

    Generated bindings for Linux's userspace API

    v0.12.1
    ⤓331.7Mdownloads
44. 44
    toml_datetime↗

    ● Rust

    A TOML-compatible datetime type

    v1.1.3+spec-1.1.0
    ⤓330.3Mdownloads
45. 45
    aho-corasick↗

    ● Rust

    Fast multiple substring searching.

    v1.1.5
    ⤓329.5Mdownloads
46. 46
    foldhash↗

    ● Rust

    A fast, non-cryptographic, minimally DoS-resistant hashing algorithm.

    v0.2.0
    ⤓322.8Mdownloads
47. 47
    zerocopy↗

    ● Rust

    Zerocopy makes zero-cost memory manipulation effortless. We write "unsafe" so you don't have to.

    v0.8.63
    ⤓321.8Mdownloads
48. 48
    bytes↗

    ● Rust

    Types and traits for working with bytes

    v1.12.1
    ⤓320.5Mdownloads
49. 49
    http↗

    ● Rust

    A set of types for representing HTTP requests and responses.

    v1.5.0
    ⤓318.2Mdownloads
50. 50
    regex↗

    ● Rust

    An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.

    v1.13.1
    ⤓317.2Mdownloads

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