Alviy vs Postgrey
A side-by-side look at Alviy and Postgrey. For an in-depth review of either product, follow the links below.
Alviy
Office & Productivity
Alviy is an open-source alternative to Visio developed by Alvian Software. It is a vector graphics editor optimized for creating flowcharts, UML diagrams, BPMN diagrams, network diagrams, mocks, prototyping and more. Alviy is cross-platform and works on Windows, Mac and Linux.
flowchartdiagrammockupwireframeprototype
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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