Apache Excalibur

Our primary product is a lightweight, embeddable Inversion of Control container named Fortress that is written in java .

Free software · by Apache Software Foundation · excalibur.apache.org

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What Apache Excalibur’s own pages say

What it says it doesOur primary product is a lightweight, embeddable Inversion of Control container named Fortress that is written in java . excalibur.apache.org
Open sourceYes excalibur.apache.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.