# iodine

C-powered HTTP and WebSocket application server for Ruby Rack applications, with built-in Pub/Sub.


Source: https://findsoftware.frbit.cloud/iodine/
Last reviewed: 2026-10-29
Listed since: 2026-10-29

## Record

### Links

- repository: https://github.com/boazsegev/iodine
- docs: https://www.rubydoc.info/github/boazsegev/iodine

### Identity

- status: active
- maintainer: Boaz Segev
- maintainerType: individual
- parent: unknown
- firstRelease: 2015
- hqCountry: unknown

### Kind

- category: web-server
- hosting: ruby
- language: c
- runtime: ruby
- runtimeMin: ruby 3.2
- basedOn: unknown

### Content

- contentStore: not applicable
- databases: not applicable
- adminUi: not applicable
- headlessApi: not applicable
- templating: not applicable
- i18n: not applicable

### Rendering and deploy

- runsAs: always-on
- renderingModes: not applicable
- installMethod: RubyGems (gem install iodine)

### License

- licenseModel: open-source
- license: MIT

### Releases

- currentMajor: 0
- latestReleaseDate: 2026-10-26

### Adoption

- githubStargazers: 991
- packagistDownloads: not applicable
- npmWeeklyDownloads: not applicable
- contributors: 24
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: 47
- dependentPackages: 9

### Sources

- urls: https://api.github.com/repos/boazsegev/iodine (read 2026-10-29)
- urls: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- maintainer: https://raw.githubusercontent.com/boazsegev/iodine/master/LICENSE.txt (read 2026-10-29)
- maintainerType: https://raw.githubusercontent.com/boazsegev/iodine/master/LICENSE.txt (read 2026-10-29)
- category: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- language: https://api.github.com/repos/boazsegev/iodine/languages (read 2026-10-29)
- runtime: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- runtimeMin: https://github.com/boazsegev/iodine/blob/v0.8.3/iodine.gemspec (read 2026-10-29)
- runsAs: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- installMethod: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- installMethod: https://raw.githubusercontent.com/boazsegev/iodine/master/README.md (read 2026-10-29)
- license: https://api.github.com/repos/boazsegev/iodine/license (read 2026-10-29)
- licenseModel: https://raw.githubusercontent.com/boazsegev/iodine/master/LICENSE.txt (read 2026-10-29)
- currentMajor: https://api.github.com/repos/boazsegev/iodine/releases/latest (read 2026-10-29)
- latestReleaseDate: https://api.github.com/repos/boazsegev/iodine/releases/latest (read 2026-10-29)
- firstRelease: https://rubygems.org/api/v1/versions/iodine.json (read 2026-10-29)
- githubStargazers: https://api.github.com/repos/boazsegev/iodine (read 2026-10-29)
- contributors: https://api.github.com/repos/boazsegev/iodine/contributors?per_page=1 (read 2026-10-29)
- dependentRepos: https://packages.ecosyste.ms/api/v1/registries/rubygems.org/packages/iodine (read 2026-10-29)
- dependentPackages: https://packages.ecosyste.ms/api/v1/registries/rubygems.org/packages/iodine (read 2026-10-29)

## Notes

iodine is a Ruby gem that provides a C-powered HTTP and WebSocket server for Rack and NeoRack applications. Its README lists built-in WebSockets, Server-Sent Events, Pub/Sub, static file serving and TLS, and describes a master process that monitors worker processes. The Pub/Sub engine can use Redis or Valkey when a deployment needs an external broker.

It is installed with gem install iodine or added to a Gemfile for Bundler-managed applications. It runs as a long-lived server in front of the application, not as a script that runs per request. Boaz Segev is the copyright holder named in the MIT license, and the API reference is published on rubydoc.info.

## Worth knowing

The project has no website of its own: the repository and the API reference are its pages. On Windows the README describes single-process mode.

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Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attributes are recorded, never scored; absent means unknown.
Credit, in full: FindSoftware, CC BY 4.0