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Should I use Compadre (ComPADRE)?

Digital library of physics and astronomy teaching resources - compadre.org

Depends. Evidence is thin, but Compadre.org appears to be a free academic resource library for physics and astronomy educators, not a product you buy. Use it if you teach physics; move on if you came shopping for software.

Confidence

Low. Based on ~7 usable public sources; confidence low because most 'Compadre' search results describe unrelated products.

Ratings

  • Value for money
  • Ease of useNo usability evidence found
  • Feature depthNo feature evidence found
  • Support qualityNo support evidence found
  • Security posture

Pricing

Free

Compadre access

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes

Best for

  • Physics and astronomy teachers
  • Physics education researchers
  • Students wanting curated lesson material

Not for

  • Software buyers — nothing here to purchase
  • Non-science educators
  • Teams expecting vendor support or SLAs
  • Guitarists and knife shoppers — wrong Compadre

Gotchas - check before you buy

medium

XSS reported on via Open Bug Bounty; remediation status unclear

medium

Physlet simulations require legacy Java browser configuration; may fail on modern setups

low

Name collision: pedal, knife, and restaurant 'Compadre' results clutter research

Pros and cons

Pros

  • Hosts physics and astronomy teaching resources for educators
  • Backed by physics societies; AAPT publishes its policies
  • Runs niche portals like Physlets and PER-Central
  • Publishes a site security page

Cons

  • Flagged for cross-site scripting in an Open Bug Bounty report
  • Legacy Physlet content needs Java browser settings
  • Searches are polluted by unrelated Compadre products and restaurants

Sources & method

Analyzed 10/02/2026 - 8 sources - One community-reported XSS via Open Bug Bounty; the site publishes its own security page.

official x4review x2security x1news x1
  • Cross-site scripting report on compadre.org, Open Bug Bounty report 4333477 flags an XSS vulnerability; fix status not confirmed in sources.

Key stats

  • Value for money: 5/5

    Rating

  • Free

    Starting price

  • 8

    Sources

  • Analyzed

  • Value for money: 5/5. Free educational resource library
  • Ease of use. No usability evidence found
  • Feature depth. No feature evidence found
  • Support quality. No support evidence found
  • Security posture: 2/5. One community-reported XSS finding
  • 2005 Launched Covered in APS News, March 2005
  • Free Cost No paid tiers found in sources
  • 1 Security reports Open Bug Bounty XSS report
  • ~7 Usable sources Most 'Compadre' coverage is unrelated products

Pricing

Compadre access

Free

  • Open educational resource library
  • No commercial tiers found in sources

Security

One community-reported XSS via Open Bug Bounty; the site publishes its own security page.

  • Cross-site scripting report on compadre.orgOpen Bug Bounty report 4333477 flags an XSS vulnerability; fix status not confirmed in sources.⁴

What users say

No user reviews of Compadre.org itself surfaced; nearly all 'Compadre' reviews found concern unrelated products like a Strymon guitar pedal.

Full analysis

Based on ~7 usable public sources; confidence low because most 'Compadre' search results describe unrelated products.

Free physics/astronomy teaching library, not software. Great for educators; nothing to buy for anyone else.

Methodology

Based on ~7 usable public sources; confidence low because most 'Compadre' search results describe unrelated products.

Sources

  1. ComPADRE Brings Digital Resources to Physics and Astronomyaps.org
    news
  2. ComPADRE Policies (AAPT)aapt.org
    official
  3. Compadre.org Product Security Pagecompadre.org
    official
  4. compadre.org Cross Site Scripting vulnerability (Open Bug Bounty)openbugbounty.org
    security
  5. Java Security and Browser Settings — Physlet Physics on Compadrecompadre.org
    official
  6. PER-Central item hosted on Compadreper-central.org
    official
  7. Strymon Compadre pedal review (unrelated product)guitarplayer.com
    review
  8. Reddit r/guitarpedals thread on Strymon Compadre (unrelated product)reddit.com
    review

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