Öffi vs Postgrey
A side-by-side look at Öffi and Postgrey. For an in-depth review of either product, follow the links below.
Öffi
Travel & Location
Öffi is a free and open-source public transport app for Android and iOS. It allows users to search for routes, see departure times, and navigate using public transportation in cities around the world.
transporttransitschedulesnavigation
Postgrey
Network & Admin
Postgrey is an SMTP proxy program that temporarily delays mail delivery to help mitigate spam. It uses greylisting to reject initial email delivery attempts, forcing email servers to retry sending messages and confirming they are not spammers.
greylistingsmtpemail-deliveryantispam
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