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Best Open Source Product & Project Management Tools in 2026

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Unleash

stars 13.7Kforks 883

LaunchDarkly alternative with SDK for 30+ languages, self-hosted

Feature Flag A/B Testing DevOps Tools+5

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darktable

stars 12.9Kforks 1.4K

Non-destructive RAW photo editor and darkroom workflow

Photo Management Graphic Design Open Core+2