JF Updater is application lets you stay up-to-date with JF ROM updates. The application will check periodically for new ROM updates, and will notify you when a new one is released. The application also allows you to automatically download and apply these updates
OpenIntents Update checker manages update information of applications that are currently installed on an Android-based phone. It lists version information of all managed applications and allows to check for new versions.
OI Update can perform version check periodically or manually on user's demand