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Vigi-Sky

Free tools that measure sky brightness, forecast aurorae and satellite passes, and analyse submitted UAP sighting reports.

Actively maintained

At a glanceswept Oct 14, 2026

≈ 1visits/mo

Little sign of use · estimate, read Oct 14, 2026

For
Citizen sky observers and amateur astronomers who want tools to measure and report unusual lights in the sky.
Activity
Actively maintainedsite updated 4 weeks ago
Company
since 2026per their site
Used for
  • measure a light in the sky by azimuth
  • submit an observation for review and analysis
  • check whether a sky photo or video is authentic
Worth knowingcomputed from what we read · each with its source
The companyeach fact with its source · read Oct 21, 2026
How a program reaches itfound, not claimed · read Oct 21, 2026
  • MCP serverfr.vigi-sky/vigiskyverified in the MCP registry
  • Stateanswers, 24 toolschecked 2026-10-21
  • Address to connectvigi-sky.fr/mcp
  • MCP docsvigi-sky.fr/mcp/documentationthe vendor's page ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Analyticsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Vigi-Sky?

    Free tools that measure sky brightness, forecast aurorae and satellite passes, and analyse submitted UAP sighting reports. It is listed in the Atlas under Analytics.

  • Who is Vigi-Sky for?

    Citizen sky observers and amateur astronomers who want tools to measure and report unusual lights in the sky.

  • Do people use Vigi-Sky?

    Little sign of use: ≈ 1 visits/mo · estimate, 2026-10.

  • Is Vigi-Sky still maintained?

    Actively maintained: site updated 4 weeks ago.

  • What are alternatives to Vigi-Sky?

    In Analytics, by use: Xweather, Skopx, Lucent, SnowSure, Fraoula Data Auditor, StackSpend.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk