# Known

Open-source PHP platform for social publishing, where one or more users post blog posts and status updates to a site they run.


Source: https://findsoftware.frbit.cloud/known/
Last reviewed: 2026-10-20
Listed since: 2026-10-19

## Record

### Links

- home: https://idno.co
- repository: https://github.com/idno/idno

### Identity

- status: active
- maintainer: Known, Inc
- maintainerType: company
- parent: unknown
- firstRelease: unknown
- hqCountry: unknown

### Kind

- category: cms
- hosting: php
- language: php
- runtime: php
- runtimeMin: php 8.1
- basedOn: unknown

### Content

- contentStore: database
- databases: mysql, mariadb, mongodb
- adminUi: unknown
- headlessApi: unknown
- templating: unknown
- i18n: unknown

### Rendering and deploy

- runsAs: per-request, always-on, scheduled
- renderingModes: unknown
- installMethod: composer create-project idno/idno, release archive, or git clone with composer install

### License

- licenseModel: open-source
- license: Apache-2.0

### Releases

- currentMajor: 1
- latestReleaseDate: 2026-03-01

### Adoption

- githubStargazers: 1126
- packagistDownloads: unknown
- npmWeeklyDownloads: not applicable
- contributors: 89
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: unknown
- dependentPackages: unknown

### Sources

- urls: https://idno.co (read 2026-10-20)
- urls: https://api.github.com/repos/idno/idno (read 2026-10-20)
- urls: https://withknown.com/opensource (read 2026-10-20)
- maintainer: https://github.com/idno/idno/blob/dev/LICENSE (read 2026-10-20)
- category: https://withknown.com (read 2026-10-20)
- language: https://api.github.com/repos/idno/idno (read 2026-10-20)
- runtime: https://github.com/idno/idno/blob/1.6.4/composer.json (read 2026-10-20)
- runtimeMin: https://github.com/idno/idno/blob/1.6.4/composer.json (read 2026-10-20)
- license: https://github.com/idno/idno/blob/1.6.4/composer.json (read 2026-10-20)
- licenseModel: https://withknown.com/opensource (read 2026-10-20)
- currentMajor: https://api.github.com/repos/idno/idno/releases/latest (read 2026-10-20)
- latestReleaseDate: https://api.github.com/repos/idno/idno/releases/latest (read 2026-10-20)
- githubStargazers: https://api.github.com/repos/idno/idno (read 2026-10-20)
- contributors: https://api.github.com/repos/idno/idno/contributors (read 2026-10-20)
- installMethod: https://github.com/idno/idno/blob/1.6.4/README.md (read 2026-10-20)
- runsAs: https://github.com/idno/idno/blob/1.6.4/README.md (read 2026-10-20)

## Notes

Known is a publishing platform for groups and individuals, where any number of users post blog posts and status updates to one shared site. It is written in PHP and keeps its content in MySQL, MariaDB or MongoDB, behind a web server with URL rewriting. It installs with Composer or from a release archive, and the project also runs Known as a hosted service at withknown.com.

## Worth knowing

By default Known processes events such as Webmention pings and ActivityPub deliveries inside the web request that triggered them. An asynchronous queue moves that work into a background worker, which the README says is required for ActivityPub. The worker must stay running, started by systemd or once a minute by cron.

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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