# Install rmcast with Homebrew IP Multicast library. Version 2.0.0 via Homebrew; verified 2026-05-19. ## Install ```sh sudo av install brew:rmcast ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install rmcast ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:rmcast - **Package manager:** Homebrew - **Package manager page:** - **Version:** 2.0.0 - **Source summary:** IP Multicast library - **Homepage:** - **Upstream docs:** - **License:** QPL-1.0 - **Source archive:** - **Last updated:** 2026-05-19T07:51:07-04:00 - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - mcastproxy (cli) - rmchat (cli) - mcastproxy (alias) - rmchat (alias) ## Build dependencies - autoconf - automake - libtool ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura ## Freshness - Page generated: 2026-07-08 - Package-manager version: 2.0.0 - Package-manager updated: 2026-05-19 - Local data: ok - Upstream repository: https://web.archive.org/web/20250722003825/https://www.land.ufrj.br/tools/rmcast/rmcast.html - info: Release/tag comparison is only available for GitHub repositories. ## Project history and usage rmcast packages RML, the Reliable Multicast Library, a free software library for reliable data transmission over IP multicast. ### Project history The official archived project page explains that IP multicast saves bandwidth by sending one packet across each physical link, but that UDP-based multicast lacks reliability. RML was developed to provide a reliable multicast environment and was distributed under the QPL. ### Adoption history The project appears to have been a niche academic and systems-networking library rather than a broad user-facing tool. Homebrew packaging keeps the library and the `mcastproxy` and `rmchat` executables installable for legacy multicast experiments. ### How it is used Package-level usage centers on the reliable multicast library and the shipped command-line programs `mcastproxy` and `rmchat`; the official project page says the release tarballs included a manual. ### Why package nerds care rmcast is notable to package maintainers as a preserved multicast library with old release tarballs, bundled manual material, and QPL licensing. It represents the kind of specialized networking code that survives mostly through Unix package collections. ### Timeline - 2004: Version 1.5 released on 2004-09-26. - 2005: Version 1.6 released on 2005-12-14. - 2006: Versions 1.7 and 1.8 released. - 2008: Version 1.9 released on 2008-05-01. - 2009: Version 2.0.0 released on 2009-08-06. ### Related projects - Related technologies include IP multicast, UDP, reliable multicast protocols, `mcastproxy`, and `rmchat`. ### Sources - - - source_facts.executables ## Security Notes library-like package without higher-risk signals. - **Geiger risk:** green / low - library-like package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** rmcast - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** yes - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Related links - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Archive and compression packages](https://www.automicvault.com/pkg/archive-compression-tools/) - Matched archive or compression metadata. - [Networking and protocol packages](https://www.automicvault.com/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [Web development packages](https://www.automicvault.com/pkg/web-dev-tools/) - Matched web development metadata. - [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. - [proxygen](https://www.automicvault.com/pkg/brew/proxygen/) - Shares av.db curated category or tags: cli, library, networking. - [ldns](https://www.automicvault.com/pkg/brew/ldns/) - Shares av.db curated category or tags: cli, library, networking. - [c-ares](https://www.automicvault.com/pkg/brew/c-ares/) - Shares av.db curated category or tags: cli, library, networking. - [czmq](https://www.automicvault.com/pkg/brew/czmq/) - Shares av.db curated category or tags: cli, library, networking. - [gupnp](https://www.automicvault.com/pkg/brew/gupnp/) - Shares av.db curated category or tags: cli, library, networking. - [libnatpmp](https://www.automicvault.com/pkg/brew/libnatpmp/) - Shares av.db curated category or tags: cli, library, networking. - [libnet](https://www.automicvault.com/pkg/brew/libnet/) - Shares av.db curated category or tags: cli, library, networking. - [libproxy](https://www.automicvault.com/pkg/brew/libproxy/) - Shares av.db curated category or tags: cli, library, networking. ## Combined YAML source View the package source record on GitHub. [combined/rmcast.yml](https://github.com/automic-vault/db/blob/main/combined/rmcast.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