Best Open Source Alternatives to Sematext Synthetics

Compare the best free and open-source alternatives to Sematext Synthetics — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 3 alternatives

Sematext Synthetics

Proprietary SaaS

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Sematext Synthetics alternatives compared

Open-source alternatives to Sematext Synthetics, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Uptime Kuma	89,704	MIT	LinuxDocker	Yes	Aug 2026	Visit
Gatus	11,673	Apache-2.0	LinuxDocker	Yes	Jul 2026	Visit
Vigil	1,935	MPL-2.0	LinuxDocker	Yes	May 2026	Visit

Top open-source Sematext Synthetics alternatives

Uptime Kuma89,704MIT

Fancy self-hosted monitoring tool.

LinuxDocker

vs Sematext Synthetics: a free, open-source option you fully control, licensed MIT.

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Gatus11,673Apache-2.0

Developer-oriented service health dashboard.

LinuxDocker

vs Sematext Synthetics: a free, open-source option you fully control, licensed Apache-2.0.

Visit Details

Vigil1,935MPL-2.0

Microservices status page and uptime monitoring server.

LinuxDocker

vs Sematext Synthetics: a free, open-source option you fully control, licensed MPL-2.0.

Visit Details