* [sinopia-crowd](https://www.npmjs.com/package/sinopia-crowd): auth plugin for sinopia supporting atlassian crowd.
* [sinopia-activedirectory](https://www.npmjs.com/package/sinopia-activedirectory): Active Directory authentication plugin for sinopia.
* [sinopia-github-oauth](https://www.npmjs.com/package/sinopia-github-oauth): authentication plugin for sinopia2, supporting github oauth web flow.
* [sinopia-delegated-auth](https://www.npmjs.com/package/sinopia-delegated-auth): Sinopia authentication plugin that delegates authentication to another HTTP URL
* [sinopia-altldap](https://www.npmjs.com/package/sinopia-altldap): Alternate LDAP Auth plugin for Sinopia
* [sinopia-request](https://www.npmjs.com/package/sinopia-request): An easy and fully auth-plugin with configuration to use an external API.
* [sinopia-htaccess-gpg-email](https://www.npmjs.com/package/sinopia-htaccess-gpg-email): Generate password in htaccess format, encrypt with GPG and send via MailGun API to users.
* [sinopia-mongodb](https://www.npmjs.com/package/sinopia-mongodb): An easy and fully auth-plugin with configuration to use a mongodb database.
* [sinopia-htpasswd](https://www.npmjs.com/package/sinopia-htpasswd): auth plugin for sinopia supporting htpasswd format.
* [sinopia-leveldb](https://www.npmjs.com/package/sinopia-leveldb): a leveldb backed auth plugin for sinopia private npm.
* [sinopia-gitlabheres](https://www.npmjs.com/package/sinopia-gitlabheres): Gitlab authentication plugin for sinopia.
* [sinopia-gitlab](https://www.npmjs.com/package/sinopia-gitlab): Gitlab authentication plugin for sinopia
* [sinopia-ldap](https://www.npmjs.com/package/sinopia-ldap): LDAP auth plugin for sinopia.
* [verdaccio-ldap](https://www.npmjs.com/package/verdaccio-ldap): LDAP auth plugin for verdaccio.
* [verdaccio-active-directory](https://github.com/nowhammies/verdaccio-activedirectory): Active Directory authentication plugin for verdaccio
## Caveats
Not all these plugins are been tested continuously, some of them might not work at all. Please if you found any issue feel free to notify the owner of each plugin.