Lib.rs

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  1. syn

    Parser for Rust source code

    v2.0.117 98.8M #proc-macro #syntax-tree #syntax-tree-node #macro-input #parse-stream #error-handling #macro-derive #source-file #spans-information

  2. cargo_metadata

    structured access to the output of cargo metadata

    v0.23.1 12.0M #cargo-subcommand #structured-output #json-output #manifest-path #diagnostics #metadata-command #metadata-parser #message-format

  3. combine

    Fast parser combinators on arbitrary streams with zero-copy support

    v4.6.7 11.5M #combinator #parser-combinator #parser

  4. rstml

    Rust templating for XML-based formats (HTML, SVG, MathML) implemented on top of proc-macro::TokenStreams

    v0.12.1 254K #rsx #syn #jsx #html

  5. tool-parser

    Tool/function call parser for LLM model outputs

    v1.2.0 171K #tool-calling #llm-function-calling #function-calling #llm #api-bindings

  6. verus_syn

    Parser for Rust source code extended to support Verus

    v0.0.0-2026-05-10-0145 16K #proc-macro #syntax-tree #syntax-tree-node #syn

  7. rust-rule-engine

    blazing-fast Rust rule engine with RETE algorithm, backward chaining inference, and GRL (Grule Rule Language) syntax. Features: forward/backward chaining, pattern matching, unification…

    v1.20.2 140 #rules-engine #artificial-intelligence #grl #ml

  8. pjson-rs

    Priority JSON Streaming Protocol - high-performance priority-based JSON streaming (requires nightly Rust)

    v0.6.0 #streaming-json #simd-json #protocols #simd-performance

  9. ai-dispatch

    Multi-AI CLI team orchestrator

    v8.99.10 #aid #multi-agent #agent-cli

  10. fastxml

    A fast, memory-efficient XML library with XPath and XSD validation support

    v0.8.1 #xpath #xml #streaming-parser #xsd #parser

  11. redis-oxide

    High-performance async Redis client for Rust with automatic cluster support, multiplexing, and advanced features

    v0.2.6 #redis #redis-cluster #cache #database #async

  12. json-stream-parser

    A JSON parser that is capable of parsing incomplete JSON strings that are streamed in

    v0.1.5 310 #streaming-parser #json-stream #stream-parser #json #reactive

  13. itch5

    Parser for Nasdaq TotalView-ITCH 5.0

    v0.1.5 #nasdaq #order-book #itch #control-flow #byte-parser #trading #trade #price #zero-copy-parser #5-0

  14. laminar-sql

    SQL layer for LaminarDB with streaming extensions

    v0.22.0 #sql #lookup-tables #data-fusion #clause #sql-parser #emit #translator #temporal #udf #query-plan

  15. liblas

    parse .las files

    v0.0.2 #las #las-file #lasso #cwls-las #well-logs

  16. yscv-video

    Video decoding (H.264, HEVC), MP4 parsing, and camera I/O

    v0.1.9 #onnx #image-processing #computer-vision #deep-learning #video

  17. ifc-lite-core-cat

    High-performance IFC/STEP parser for building data, built on comp-cat-rs

    v0.1.1 #ifc #bim #step #aec #parser

  18. quoth

    scannerless (no-lexing), developer-friendly parsing library for implementing DSLs and syntax parsers in Rust

    v0.3.0 550 #parser-dsl #dsl #parser

  19. emotiv-cortex-v2

    Rust client for the Emotiv Cortex v2 WebSocket API

    v0.3.4 #eeg #bci #emotiv #cortex

  20. mnemosyne-cli

    AI-powered JVM heap analysis tool — parse HPROF dumps, detect memory leaks, trace GC paths

    v0.2.0 #heap-dump #analysis #hprof #jvm #heap-memory #memory-analysis

  21. rill-json

    A fast, 100% safe, and RFC 8259-compliant streaming JSON parser and serializer, built from scratch in Rust

    v0.5.0 #parser #streaming-json #streaming-parser #no-unsafe #serializer

  22. sig_rp2040_matrix_board

    Server for applets on framework LED Matrix

    v0.1.4 240 #led-matrix #graphics #framework

  23. java-serialization

    Java object serialization stream parser written in Rust

    v0.1.0 #java #deserialize #security #serialization #parser

  24. fast-html-parser

    SIMD-optimized HTML parser for web scraping — fast tokenization, CSS selectors, XPath, encoding detection

    v0.1.0 #html-parser #css-selectors #web-scraping #simd

  25. newsfresh

    CLI and library for querying, filtering, and analyzing GDELT Global Knowledge Graph (GKG) v2.1 data — the world's largest open news event dataset

    v0.1.0-beta.2 #nlp #gkg #gdelt #geopolitics #news

  26. oxionnx-proto

    ONNX protobuf parser for OxiONNX — zero-dependency wire format decoder

    v0.1.2 550 #onnx #protobuf #protobuf-parser #pure-rust

  27. discord-stream-rs

    Discord voice/video streaming library for selfbots, ported from @dank074/discord-video-stream

    v0.1.3 #video-stream #video-streaming #h264 #voice #web-rtc #encryption #video-codec #h265 #e2ee #stream-key

  28. async-ffmpeg-sidecar

    Wrap a standalone FFmpeg binary in an intiutive Stream interface

    v0.0.4 290 #async-stream #ffmpeg #sidecar #binary #wrap #video-frame

  29. syn-impersonated

    Parser for Rust source code

    v0.1.18 #proc-macro #syntax-tree #syn #macro-input #syntax-tree-node #parse-stream #error-handling #macro-derive #source-file

  30. emdoc

    A fast, lossless serialEM MDOC parser and writer for cryo-electron microscopy. Eg. cryo-ET mdoc file.

    v0.1.1 #mdoc #cryo-et #serial-em #cryo-em

  31. tinywasm-parser

    Parser and lowering pipeline for TinyWasm

    v0.9.0 #tiny-wasm #wasm-interpreter #wasm #no-std #interpreter

  32. binator

    Parser Combinator

    v0.3.0 380 #parser-combinator #combinator #parser

  33. gem-index-filter

    Fast streaming filter for RubyGems versions index files

    v0.2.0 #streaming #compact-index #filter #bundler #rubygems

  34. nexo-driver-claude

    Spawn the claude CLI under nexo-rs, parse stream-json events, and resume sessions across turns. Phase 67.1 of the agent framework.

    v0.1.7 #ai-agent #nats #agent-framework #llm #framework

  35. varpulis-parser

    Parser for VPL language

    v0.10.0 #ast #vpl #streaming-analytics #events #column #grammar #mistakes

  36. combine_wasi

    Fast parser combinators on arbitrary streams with zero-copy support

    v4.6.6 #combinator #parser-combinator #parser

  37. m3u_parser

    parsing and manipulating M3U files

    v0.1.3 180 #m3u #stream #parser #url #information #playlist

  38. serde_jsonrc

    A lenient JSON serialization file format

    v0.1.0 56K #serde-json #json #serialize #serialization

    39. Try searching with DuckDuckGo or on crates.io.

  39. syn-pub-items

    Parser for Rust source code (patched for pub items)

    v0.15.30 #proc-macro #syn #syntax-tree #syntax-tree-node #macro-input #parse-stream #source-file #error-message #data-structures #macro-derive

  40. proc_micro

    Small conveniences for high-quality macros

    v0.1.0 #proc-macro #macro-error #convenience #micro #attributes #strum

  41. assert-parse

    The util to assert macro parsing

    v1.0.2 #macro-parser #testing #assert #parse-input #error-derive #parse-stream #error-handling

  42. yap_streaming

    Yap extension crate for parsing streams

    v0.2.0 #stream-parser #streaming-parser #yap #extension #token #parse-stream

  43. timrs_macro_utils

    Macro helpers for Tim.rs

    v1.1.0-rc.6 #testing-macro #tim-rs #macro-helpers #helper #lint

  44. deluxe-core

    Core traits and helpers for Deluxe procedural macro attribute parser

    v0.5.0 79K #proc-macro #macro-attributes #extract-attributes #container #field-attributes #parse-stream #parse-attributes #tuple-struct

  45. kerf

    tokio-based trace event collector

    v0.1.2 #events #trace-event #routing #tokio-based #collector #warnings

  46. pipegate

    A payment authentication middleware with stablecoins

    v0.6.0 330 #blockchain #ethereum #payment

  47. xcodebuild

    command wrapper, runner and log parser

    v0.1.10 #command-runner #log-parser #compilation-time #logging #stream #command-output

  48. splint

    Custom Rust Linting

    v1.1.0 220 #linting #rules #src #rust-analyzer

  49. join_impl

    join! macro

    v0.3.1 #try-join #branch #macro #combinator #chain #transpose #future-stream #thread-sync

  50. welly-parser

    An artisanal parser for the Welly programming language

    v0.3.0 330 #welly #parser

  51. respico

    very small RESP parser

    v0.1.0 #redis #parser #stream #parse-stream

  52. coreos-stream-metadata

    Fetch and parse stream metadata for Fedora CoreOS and derivatives

    v0.1.0 #core-os #fedora #metadata #stream #image #parse-stream #fetch-and-parse

  53. atm0s-sdn-rpc

    RPC service in atm0s-sdn

    v0.1.4 #rpc-service #atm0s-sdn #service-in-atm0s-sdn

  54. unquote

    A reverse quote macro... that is: A macro to parse input from a ParseStream according to a given pattern.

    v0.0.8 480 #syn #quote #parse-stream

  55. nys

    A declarative parer generator library

    v0.1.0 #generator #declarative #quote #parser-generator #struct-fields

  56. assert-parse-core

    The core for 'assert-parse'

    v1.0.0 #parser #macro-parser #error-handling #assert #parse-input #parse-stream

  57. assert-parse-register-assert-macro

    The util macro for 'assert-parse'

    v1.0.4 #assert-parse #parser #macro #register #ident #macro-parser #error-handling #parse-input #parse-stream