# Install wolfmqtt with Homebrew Small, fast, portable MQTT client C implementation. Version 2.1.0 via Homebrew; verified 2026-07-03. ## Install ```sh sudo av install brew:wolfmqtt ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install wolfmqtt ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:wolfmqtt - **Package manager:** Homebrew - **Package manager page:** - **Version:** 2.1.0 - **Source summary:** Small, fast, portable MQTT client C implementation - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** GPL-3.0-or-later - **Source archive:** - **Last updated:** 2026-07-03T00:12:41Z - **Generated:** 2026-07-08T18:08:21+00:00 ## Executables - wolfmqtt-config (cli) - wolfmqtt-config (alias) ## Dependencies - wolfssl ## Build dependencies - autoconf - automake - libtool ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 2.1.0 - Package-manager updated: 2026-07-03 - Local data: ok - Upstream repository: https://github.com/wolfSSL/wolfMQTT - Upstream latest detected: v2.1.0 (current) ## Project history and usage wolfMQTT is wolfSSL's small C MQTT client library for embedded and resource-constrained systems. It provides MQTT client functionality with plain TCP or TLS via wolfSSL, and the project positions itself around portability, low code size, QoS 0-2 support, MQTT 3.1.1, MQTT 5.0, and MQTT-SN. ### Project history wolfSSL's changelog says wolfMQTT has existed since the project's beginning in 2015, and GitHub release metadata shows early public releases in November and December 2015. The GitHub repository was created in October 2015, matching the changelog's project-start chronology. The library is part of the wolfSSL product family rather than an independent MQTT broker or application. Its README and product page describe it as an MQTT Client written in C for embedded use and built from the ground up to be multi-platform, space conscious, and extensible, with TLS supplied through wolfSSL. ### Adoption history wolfMQTT's adoption follows the same embedded-security channel as wolfSSL: users who already rely on wolfSSL for TLS can add MQTT without bringing in a large runtime or a separate TLS stack. Its repository and releases show steady maintenance into the 2020s, with 2.0.0 released in March 2026. A notable protocol transition was MQTT 5.0 support. wolfSSL's 2019 post noted that wolfMQTT, originally based on MQTT 3.1.1, also supported MQTT v5.0 after the OASIS standardization work, bringing features such as scalability improvements, better error reporting, capability discovery patterns, user properties, and support for small clients. ### How it is used Users embed wolfMQTT into firmware, gateways, RTOS applications, and C programs that need to publish or subscribe to broker topics. The examples include a general MQTT client, firmware update examples, and WebSocket broker tests, making the package useful both as a library dependency and as a reference implementation for constrained MQTT clients. ### Why package nerds care The package matters because it is an MQTT client in the same packaging and licensing orbit as wolfSSL. For embedded package maintainers, that means a small C MQTT stack whose TLS story is deliberately aligned with the wolfSSL library already used for HTTPS, DTLS, and device-security work. ### Timeline - 2015: wolfMQTT project begins; early GitHub releases v0.2 and v0.3 published in November. - 2016: 0.x releases continue as the library matures. - 2019: wolfSSL documents wolfMQTT support for MQTT v5.0 after OASIS standardization. - 2022: changelog records wolfMQTT 1.12.0 with MQTT v5 fixes and multithreading-related API work. - 2026: wolfMQTT v2.0.0 released. ### Related projects - wolfSSL supplies the TLS layer wolfMQTT uses for secure MQTT connections. - MQTT 3.1.1, MQTT 5.0, and MQTT-SN are the protocol specifications wolfMQTT targets. ### Sources - - - - - - ## Security Notes broad file, network, media, or database tool signal. - **Geiger risk:** blue / medium - broad file, network, media, or database tool signal ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** wolfmqtt - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Related links - [Secret-risk packages](https://www.automicvault.com/pkg/secret-risk-packages/) - Has protected-tool coverage, approval-gate, or non-low Geiger security signals. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [wolfssl](https://www.automicvault.com/pkg/brew/wolfssl/) - Runtime dependency declared by Homebrew. - [autoconf](https://www.automicvault.com/pkg/brew/autoconf/) - Build dependency declared by Homebrew. - [automake](https://www.automicvault.com/pkg/brew/automake/) - Build dependency declared by Homebrew. - [libtool](https://www.automicvault.com/pkg/brew/libtool/) - Build dependency declared by Homebrew. - [cdk](https://www.automicvault.com/pkg/brew/cdk/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [esphome](https://www.automicvault.com/pkg/brew/esphome/) - Shares av.db curated category or tags: cli, developer-tools, iot. - [expat](https://www.automicvault.com/pkg/brew/expat/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [fstrm](https://www.automicvault.com/pkg/brew/fstrm/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [libevent](https://www.automicvault.com/pkg/brew/libevent/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [libxml2](https://www.automicvault.com/pkg/brew/libxml2/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [libxo](https://www.automicvault.com/pkg/brew/libxo/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [libxslt](https://www.automicvault.com/pkg/brew/libxslt/) - Shares av.db curated category or tags: c-library, cli, developer-tools, libraries. - [yaz](https://www.automicvault.com/pkg/brew/yaz/) - Local metadata places this package in an adjacent workflow. Shared terms: c-library, cli, client, config, developer. ## Combined YAML source View the package source record on GitHub. [combined/wolfmqtt.yml](https://github.com/automic-vault/db/blob/main/combined/wolfmqtt.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - cross-ecosystem install command graph