Productivity
OpenSlot
Last updated 2026-08-21 · benchmark measured 2026-08-21 — deterministic & reproducible
Hosted appointment booking software for service-based businesses.
Is OpenSlot production-ready?
Legit.Show scores OpenSlot 95 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on OpenSlot (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 92/100
- Accessibility — 96/100
- Security — 100/100
- Privacy — 75/100
- Reliability — 100/100
- Standards — 100/100
- Discoverability — 100/100
What we measured
- Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 684 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: structured data, sitemap, OpenGraph image, canonical URL.
Who it's for
Therapists · Coaches · Tutors · Salons · Consultants
Pricing
Free plan (£0 forever, 1 service, up to 20 bookings/month); Solo plan (£12/month, unlimited services); Team plan (£29/month, up to 5 staff)
Visit OpenSlot → · Alternatives to OpenSlot → · How this was measured →