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Top Open Source Cloud Cost & Optimization Tools in 2026

A curated collection of the 4 best free and open-source Cloud Cost & Optimization tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.

  • AutoMQ

    Diskless Kafka on S3 with sub-10ms latency

    Stars
    10,576
    Last commit
    11d ago
    License
    Apache-2.0

  • OpenMeter

    Open source usage-based billing and metering

    Stars
    2,231
    Last commit
    10d ago
    License
    Apache-2.0

  • Flexprice

    Billing infrastructure for AI-native and SaaS teams

    Stars
    4,453
    Last commit
    12d ago
    License
    AGPL-3.0

  • 1Panel

    Modern open-source Linux server management panel

    Stars
    36,659
    Last commit
    10d ago
    License
    GPL-3.0
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Showing 4 of 4 open-source tools