All 305,250 crates, alphabetically

log_644/5 beavers prefer log_645,394MIT log_argsA simple procedural macro to log function arguments using the tracing crate.3,108MIT OR Apache-2.0Development tools::DebuggingDevelopment tools::Procedural macro helpers log_bookRecord observations in a logbook file, or list previous observations.22MIT OR Apache-2.0Command line utilities log_bufferA zero-allocation ring buffer for storing text logs68,995MIT/Apache-2.0 log_collectorlog collector20MIT log_domainLogarithmic representation of floats5,422BSD-3-Clause log_errLog error messages from Unwrap and Expect with log crate22,681UnlicenseRust patterns log_fileA simple lib to log the process in any rust project.2,975MIT log_halA log hal for embed system and Iot2,663non-standard log_hzA logging library that provides macros for logging at a throttled rate.11,975MITDevelopment tools::Debugging log_initSmart logging initialization with automatic backend detection / 智能日志初始化与自动后端检测18,799MulanPSL-2.0AsynchronousConfiguration log_kvA hashmap backed by a log of inserts. The log is read at initialisation to rebuild the hashmap2,346MIT log_libA simple logging library.1,231MIT log_limitA rate limiting logging crate288,122MIT OR Apache-2.0Command-line interfaceConfiguration log_lokiProvides loki logging for use with the log crate. Can be used standalone or with a logging framework like fern.3,256MPL-2.0Development tools::Debugging log_macroMacro to print variable name and value only (stripped from release builds)9,550MITDevelopment tools log_managerlog manager using tracing crates2,380Apache-2.0 log_nonblockAsyncronus logger that prints all messages to STDOUT or STDERR in non blocking mode61,189MIT log_parser_by_syn1akA parser for analyzing structured log files, utilizing the Pest parsing library. `log_parser` extracts components such as date,…2,680MIT log_parser_kmaRust-based log file parser, helping extract datetime, log levels and messages3,497MIT log_pweaseStupid "logging" library made in 5 minutes just to check how to publish a crate.1,671MIT log_settingsa tiny crate allowing libraries to change logger settings1,015,507MIT log_stdImpl log hal for std1,768non-standard log_structured_storeA high-throughput append-oriented storage engine built in Rust using batched buffer-ring writes, direct I/O (O_DIRECT), and async…20GPL-3.0 log_tA simple logging library written by somebody learning Rust at the time2,815MITFilesystem log_targetsMacro for registering log targets to distributed slice with linkme451MIT log_testerTest for log messages produced by the log crate3,983GPL-3.0-onlyDevelopment tools::DebuggingDevelopment tools::Testing log_timesample code860MIT log_wrapperJust some boilerplate code to a logger wrapper over the log crate that logs to STDOUT3,230MIT/Apache-2.0 log_zeroA zero (non-std)-dependency logging tool. Simply use 1 of 5 logging macros and enjoy!0Apache-2.0 logaCombined logging and error handling75,625ISC logaddexpstable implementations of logaddexp and logsumexp42,356MITMathematicsScience logaiAI-powered log analyzer with MCP integration - Groups errors, suggests fixes, and connects external tools93MITCommand line utilitiesDevelopment tools loganLogic Analyzer and Protocol Decoder library3,041MIT loganaTurn any log source — files, compressed archives, Docker, or OTel streams — into structured data. Filter by pattern, field, or…303GPL-3.0Command line utilitiesDevelopment tools::Debugging logappendExecute child process, read from stdin and stderr, emit into files, truncate at given total content sizes.7,664GPL-3.0-or-later logbarLog-friendly progress bar5,867GPL-3.0-or-later logbookA tiny CLI that gives every repo a single logbook.md for why-I-made-this-decision and what-I-rejected — the architectural context…61MITCommand line utilitiesDevelopment tools logbook_4Record observations in a logbook file, or list previous observations.117MIT OR Apache-2.0Command line utilities logbook_dyRecords observations in a logbook file, or lists previous observations.645MITCommand line utilities logbook_test_babyRecord observations in a logbook file, or list previous observations.314MIT OR Apache-2.0Command line utilities logbrewPublic LogBrew Rust SDK for building, validating, and flushing event batches.63MITAPI bindingsDevelopment tools logbrew-cliPublic command-line interface for LogBrew.380MITCommand line utilitiesDevelopment tools logbullA modern logging library for sending structured logs to LogBull277MITDevelopment tools::Debugging logca simple logging library with fancy colors5,071GPL-3.0 logcallAn attribute macro that logs the function return value.309,914MITDevelopment tools::Debugging logcapA library for capturing log output.26,729MITDevelopment tools::DebuggingDevelopment tools::Testing logcastSimple helper to send logs via TCP772MIT logcatA simple and lightweight logging library.986MIT OR Apache-2.0 logchopLog your `Result` and `Option` chains with inline methods.5,953Apache-2.0Development tools::DebuggingRust patterns logcompactCompact noisy logs into token-efficient diagnostics91MITCommand line utilitiesDevelopment tools logcompact-builtinsDeterministic compiler, linter, runtime, and test log parsers341MITDevelopment toolsParsing tools logcompact-coreDeterministic streaming state machine for bounded log reduction360MITDevelopment toolsParsing tools logcontrolAbstract types for the systemd logcontrol interface7,551MIT OR Apache-2.0Development tools::Debugging logcontrol-loglog backend for the log control interface2,787MIT OR Apache-2.0Development tools::Debugging logcontrol-tracingTracing backend for the log control interface4,952MIT OR Apache-2.0Development tools::Debugging logcontrol-zbuszbus-based DBus frontend for the logcontrol interface8,421MIT OR Apache-2.0Development tools::Debugging logcryptCLI tool for encrypting private data in log files292MIT logdLogging data collector.2,591MIT/Apache-2.0 logdashLogdash.io simple client1,899MIT logdbEmbedded, append-only, crash-recoverable, optionally tamper-proof local log database96Apache-2.0CryptographyDatabase implementations logdb-brokerKafka-style consumer-group coordinator (shard assignment + rebalance) for logdbd17Apache-2.0 logdb-broker-protoProtobuf definitions for logdb-broker — the Kafka-style consumer-group coordinator23Apache-2.0 logdb-clientRust client SDK for logdbd — the append-only audit log database72Apache-2.0 logdb-exporterCDC exporter for logdbd — Scan + Tail → external sink16Apache-2.0 logdbdClustered log service built on logdb60Apache-2.0 logdbd-protoProtobuf definitions for logdbd — the clustered audit log database96Apache-2.0 logdiveFast, self-hosted query engine for structured JSON logs79MIT OR Apache-2.0 logdive-apiRead-only HTTP API server for a logdive index84MIT OR Apache-2.0 logdive-coreCore library for logdive: structured JSON log parsing, SQLite indexing, and query engine173MIT OR Apache-2.0Command line utilitiesDatabase interfaces logdna-clientwrapper around LogDNA's Ingest API68,847MIT logdogA command-line tool for bug bounty hunters to log steps and capture terminal output.27MIT logdrainOnline Drain log-template mining with path-preserving tokenization, masks, and persistence165Apache-2.0 OR MITAlgorithmsParsing tools logdrain-cliCommand-line log-template miner (ships the `logdrain` binary)127Apache-2.0 OR MITCommand line utilitiesParsing tools logdrillerTool to visualize application log output in the terminal299MIT logeA analysis friendly logger with formatted output.28,014MIT/Apache-2.0Development tools::Debugging logerrSeamless error type logging4,860MIT OR Apache-2.0Development toolsDevelopment tools::Debugging logexA simple logger for Rust command line applications7,502MPL-2.0Command-line interfaceDevelopment tools::Debugging logfastInsanely fast logging with a simple interface8,336GPL-2.0-only logfatherA simple and straightforward logging library for Rust.16,205MIT logfence-clientClient library for sending structured syslog messages to logfenced or rsyslog72MIT OR Apache-2.0 logfence-client-cC API wrapper for the logfence-client library49MIT OR Apache-2.0 logfence-daemonValidating syslog filter daemon — forwards valid JSON messages to rsyslog34MIT OR Apache-2.0 logfence-protoShared syslog message types and framing codecs for logfence93MIT OR Apache-2.0 logfileA logfile writer build upon the log crate18MIT OR Apache-2.0 logfireRust SDK for Pydantic Logfire66,893MIT logfire-clientLogfire client SDK, query your Pydantic Logfire logs and metrics using SQL!14MIT logfire-coreShared types for Pydantic Logfire SDKs2,210MIT logfire-sdkPlease use the `logfire` package instead.2,747MIT logflowA beautiful, customizable, and performant logging library for Rust with perfect terminal UI304MIT OR Apache-2.0Development tools::Debugging logflumeA low latency logging library 🪵.7,654MIT logfmtlogfmt parser for Rust356,642MIT logfmt-zerocopyA lightweight parser for Logfmt2,254MIT logfmt_loggerLogging interface implementing Heroku's logfmt.4,146MIT logfnprovides the logfn attribute macro for inserting logging code into your function.2,162MIT OR Apache-2.0 logfoldCollapse repetitive log output into a ranked summary without dropping rare events7MITCommand line utilitiesDevelopment tools::Debugging logformlogform for rust15,301MITDevelopment tools::Debugging logforthA versatile and extensible logging implementation.881,710Apache-2.0Development tools::Debugging logforth-append-asyncAsynchronous appender for Logforth.6,104Apache-2.0Development tools::Debugging logforth-append-fastraceFastrace appender for Logforth.186,038Apache-2.0Development tools::Debugging logforth-append-fileFile appender for Logforth with optional rollover strategy.305,752Apache-2.0Development tools::Debugging logforth-append-journaldJournald appender for Logforth.1,654Apache-2.0Development tools::Debugging logforth-append-opentelemetryOpemtelemetry appender for Logforth.154,929Apache-2.0Development tools::Debugging logforth-append-syslogSyslog appender for Logforth.1,202Apache-2.0Development tools::Debugging logforth-bridge-logBridge Logforth with the log crate.451,609Apache-2.0Development tools::Debugging logforth-coreCore structs and functions for Logforth.454,158Apache-2.0Development tools::Debugging logforth-diagnostic-fastraceFastrace diagnostic for Logforth.45,846Apache-2.0Development tools::Debugging logforth-diagnostic-task-localTask-local diagnostic for Logforth.12,012Apache-2.0Development tools::Debugging logforth-filter-rustlogRUST_LOG directive pattern filter for Logforth.26,397Apache-2.0Development tools::Debugging logforth-layout-google-cloud-loggingGoogle Cloud Structured Logging layout for Logforth.1,072Apache-2.0Development tools::Debugging logforth-layout-jsonJSON layout for Logforth.449,939Apache-2.0Development tools::Debugging logforth-layout-logfmtLogfmt layout for Logforth.4,967Apache-2.0Development tools::Debugging logforth-layout-textOptionally colored text layout for Logforth.449,048Apache-2.0Development tools::Debugging logfsSimple append-only log based filesystem with encryption and compression1,084MIT OR Apache-2.0 logfs-cliCLI for logfs - a simple append-only log based filesystem with encryption and compression642MIT OR Apache-2.0 logfusionUnified logging and error handling for Rust with structured data, tracing integration, and cross-language support409MITAPI bindingsDevelopment tools::Debugging loggThis software I use to throw logs into my system3,204WTFPL loggaA minimal logger and console printer for my loggas3,948MITCommand line utilitiesDevelopment tools::Cargo plugins logged-streamLogging of all read/write operations, errors and drop of underlying IO object.23,844MIT OR Apache-2.0AsynchronousData structures logged_fu_skaterHuman readable string obfuscation library.8,187MIT logged_tcp_proxyCommand line interface for proxying TCP connections with payload output into console which can be formatted different ways.4,060MIT OR Apache-2.0Command line utilitiesDevelopment tools::Debugging loggerLogging middleware for the Iron framework.253,218MIT logger-archiverPluggable staging archivers for the SyncLite logger.20Apache-2.0 logger-configConfiguration loader for the SyncLite logger (synclite.conf).18Apache-2.0 logger-coreCore types, errors, and IDs for the SyncLite logger runtime.32Apache-2.0 logger-db-duckdbDuckDB backend for the SyncLite logger.19Apache-2.0 logger-db-sqliteSQLite backend for the SyncLite logger.19Apache-2.0 logger-db-traitsBackend-agnostic traits for SyncLite database devices.23Apache-2.0 logger-logLog-segment writer for the SyncLite logger (SQLite-backed segments).23Apache-2.0 logger-metadataMetadata manager (status, sequence numbers) for the SyncLite logger.13Apache-2.0 logger-nxA high-performance hourly-rotating file logger implementing the `log` facade, with TTL-based cleanup. Behaviorally equivalent to…725MITDevelopment tools::Debugging logger-rsLogging utilities for Rust1,877MIT logger-rustA crate for logger with 5 logging types and 3 types of level logging22,079non-standardDevelopment tools::Debugging logger-shipperBackground worker that ships finalized log segments through one or more archivers.18Apache-2.0 logger2A modern, feature-rich replacement for the classic `logger` CLI: syslog (local/remote, RFC3164 & RFC5424), truecolor hex output,…14MIT OR Apache-2.0Command line utilities logger_broA simple TUI for monitoring scientific computation tasks.1,076MIT OR Apache-2.0Command line utilitiesDevelopment tools::Debugging logger_chotest crate8,604MIT logger_rust_i18nMacro rust-i18n into logger and user prompt2,526MITCommand line utilitiesInternationalization (i18n) logger_utcLogging with time stamp library for Rust17,953Apache-2.0 loggerheadWeb viewer for Bazaar/Breezy branches32GPL-2.0-or-later loggerithmA logging library for everyone.9,295MITDevelopment tools::Debugging loggerlogLightweight CLI log search tool powered by SQLite FTS517MITCommand line utilitiesDatabase interfaces loggerrGErr Logging backend for log facade12MIT loggerssimple logger2,049Apache-2.0 loggervA simple log implementation that logs to stdout and stderr with colors340,641MITCommand line utilities loggeryA lightweight, `no_std`-friendly logging library for Rust25MITDevelopment tools::DebuggingEmbedded development loggestA high performance logging facility for Rust's log crate11,771Apache-2.0 loggestdA daemon for high-performance logging8,948Apache-2.0 loggilog inspection tool that allows running logql queries (partialy) on local files2,406GPL-3.0 loggifySmall and simple rust logger9,625MIT logginglogging inspired by the python logging fascility.17,704MIT logging-allocatorGlobal allocator that logs on allocation for debug purposes.14,718MIT/Apache-2.0 logging-battery-packBattery pack for logging and tracing in Rust322MIT OR Apache-2.0 logging-client-rustMinimal Rust logging client call to GCP906MIT logging-optionsReusable `clap` options for logging (e.g. `--quiet` vs `--debug`) with pluggable logging providers.174MIT logging-rslogging-rs helps you add logging to your projects using simple macros.2,796MITDevelopment tools::Debugging logging-subscribersimple logging subscriber which can be silenced7,988MIT logging-toolkitLogging utilities9,927MIT OR Apache-2.0 Logging4Dummiesan easy to use and still higly configurable logging libary1,288GPL-2.0-only Logging4Dummysan easy to use and still higly configurable logging libary8,967GPL-2.0-only logging_contentAPI for interacting with the UpdateHub Cloud7,530Apache-2.0 logging_timerSimple timers that log the elapsed time when dropped823,964MITDevelopment tools::Debugging logging_timer_proc_macrosProc-macro implementation for the logging_timer crate812,645MITDevelopment tools::Debugging logginggLogging funcs75MIT loggitLoggit is a lightweight, easy-to-use logging library for Rust.7,451MIT loggixA powerful, structured logging library for Rust inspired by Logrus. Features thread-safe logging, structured fields, custom…4,421MITAsynchronousDatabase interfaces logglyUnofficial Rust library for the Loggly API2,632MIT loggrsimple logger5,063MIT OR Apache-2.0 loggrepA smarter log parser with color-coded severity, time filtering, regex matching, and stats27MITCommand line utilitiesText processing loggsA simple opinionated logger for Windows and Linux applications1,334MIT OR Apache-2.0 loggur로깅 크레이트713MITCommand line utilitiesDevelopment tools::Debugging loggyAn opinionated library for developing and testing rust applications that use logging.25,759MITDevelopment tools::DebuggingDevelopment tools::Testing loggy-macrosProcedural macros for the loggy crate.4,427MITDevelopment tools::DebuggingDevelopment tools::Testing loggy-nekologgy-neko is a thread-safe logging tool with dynamic log level configuration.2,348MIT loggy_rsA modern, cool and nice looking logger for better DX on your CLI apps.1,306Apache-2.0 loghawkA cli tool to display large CSV files2,776GPL-3.0 loghewA TUI log viewer23MIT logiA modern, cool and nice looking logger for better DX on your CLI apps.9,492Apache-2.0Command-line interface logi-iconsFuzzy-find a cloud or kubernetes icon and copy it to the clipboard. All icons (AWS, Azure, GCP, CNCF, Kubernetes) embedded in the…18MITCommand line utilitiesMultimedia::Images logi_codeA scripting language do executing combinational circuits1,343Apache-2.0 logicpropositional logic2,049MIT logic-batteriesInstall Logic Batteries — composable Prolog rule modules — into any SWI/Scryer project. Checksummed, removable, no server…18MITCommand line utilitiesDevelopment tools logic-circusOpen source logic circuit simualtor written in Rust.5,457WTFPLMathematicsSimulation logic-evalA prolog-like logic evaluator564Apache-2.0 OR MIT logic-eval-utilutility for logic-eval667Apache-2.0 OR MIT logic-formRust library for representing Cube, Clause, CNF and DNF17,678MIT logic-gatesLogic Gates1,223MIT logic-irUniversal Tri-Axial Fractal Topology (ZYModel) implementation in Rust.22Apache-2.0CompilersDevelopment tools logic-lockMySQL logic locks implemented over sea-orm7,593MITDatabase interfaces logic-longSupercell's Logic Long implemented in Rust12,605MIT logic-meshControl logic engine using event based and reactive blocks written in Rust.13,881BSD-3-ClauseAsynchronousWebAssembly logic-parserA simple lexer & parser for logical expressions that supports output as AST, JSON and SVG6,883MIT OR GPL-2.0-or-later logic-rsLibrary for representing logical formulas with support for temporal robustness semantics2,924BSD-3-ClauseMathematics logic_based_learning_pathsA system for organizing project-based learning paths2,489MIT logic_constructorMove combat and ability logic out of code and into HOCON config — designers tweak damage, healing, and targeting in a text file;…19MIT OR Apache-2.0ConfigurationGame development logic_gateLogic Gates7,675MIT logic_mesh_block_macroMacros for easy defining of block.8,537BSD-3-Clause logic_tracerRecognize a logic proposition and trace its truth value, also generate a truth table (still in development)14,329MITCompilersData structures logic_trioxideA simple Logic Gate simulating Library1,396MIT logicaffeine-baseTier-0 foundation for logicaffeine: arena, interner, spans, the exact numeric/quantity/money/time/UUID value-type tower, and the…1,761BUSL-1.1CompilersMathematics