[opensourcedex]

best-of ranking · updated nightly

Best Open Source Internet of Things (IoT) Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 3 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    Home Assistant ★ 91K

    Local control smart home automation with privacy first

    Apache-2.0 Python pushed 2026-09-17 details →
  2. 2
    CrateDB ★ 4.4K

    Scalable SQL database for real-time analytics

    Apache-2.0 Java pushed 2026-09-17 details →
  3. 3
    Gladys Assistant ★ 3.2K

    Self-hosted home automation without the cloud

    Apache-2.0 JavaScript pushed 2026-09-16 details →
method stars desc · snapshot from github api refresh nightly related Design & Prototyping, Finance & Fintech, Logistics & Supply Chain, Media & Streaming, Photo & Video Editors, Gaming

Related best-of lists

best Design & Prototyping →best Finance & Fintech →best Logistics & Supply Chain →best Media & Streaming →best Photo & Video Editors →best Gaming →

last updated nightly · ranking method: github stars, live-tracked

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Frequently asked questions

What is the best open source Internet of Things (IoT) tool in 2026?

Home Assistant leads the ranking with 90,654 GitHub stars, ahead of CrateDB. Rankings use live GitHub star counts, refreshed nightly.

How is this list of Internet of Things (IoT) tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best Internet of Things (IoT) tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.