Open Source Java Projects
Discover open source software built with Java.
Kestra
Event-driven workflow orchestration platform with a YAML-based pipeline DSL, 500+ plugins, and a built-in UI editor.
Alternative to: 
Zapier
Zapier
CoMaps
A community-led fork of Organic Maps. Free offline maps for Android and iOS with no ads, no tracking, and no data collection.
Alternative to: 
Google Maps
Google Maps
NutriTrace
Self-hosted personal nutrition tracker with PWA and Android app. No telemetry, no cloud sync, full data ownership.
Alternative to: 
MyFitnessPal
MyFitnessPal
LibreOffice
A powerful free and open source office suite with word processing, spreadsheets, presentations, and more.
Alternative to: 
Microsoft 365
Microsoft 365
Organic Maps
Free offline maps app for travelers, hikers, and cyclists using OpenStreetMap data. No ads, no tracking.
Alternative to: Google Maps
Google Maps