What powers spack.io?
Last seen Jun 2026 · 15 technologies across 11 categories
Analytics
Google Analytics
since Jan 2021
Caching
Varnish
since Jun 2022
CDN
Font scripts
Google Font API
since Jan 2024
JavaScript frameworks
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
PaaS
Amazon Web Services
since Aug 2022
GitHub Pages
since Jun 2022
Programming languages
Ruby
since Oct 2022
Security
HSTS
since Sep 2022
Static site generator
Jekyll
since Jan 2021
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| spack | #1 | 440 |
| spack package manager | #1 | 15 |
| spack documentation | #2 | 6 |
| spack install | #3 | 5 |
| spack package manager | #5 | 2 |
| install spack | #6 | 2 |
| spack packages | #32 | 1 |
| spack definition | #15 | 1 |
| python pack | #83 | 1 |
| install spack | #10 | 1 |
| c package manager | #51 | 0 |
| c package | #59 | 0 |
| what is spack | #88 | 0 |
| what is spack | #72 | 0 |
| what is spack | #40 | 0 |
| r&d magazine | #42 | 0 |
| r d 100 award | #68 | 0 |
| spack tutorial | #19 | 0 |
| spack stack | #67 | 0 |
| spack software | #80 | 0 |
| spack modules | #21 | 0 |
| spack documentation | #20 | 0 |
| spack concretize | #19 | 0 |
| os packages | #61 | 0 |
| os packages | #59 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 100% desktop
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
5.95 / 10 · ranked #113,138 of all domains
192 referring domains · OpenPageRank
Search traffic
480 est. monthly organic visits (US)
28 keywords in Google's top 30
Core Web Vitals
| LCP | 0.8 s |
| INP | 75 ms |
| CLS | 0.15 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- CDN: Fastly
- Weight: 0.4 MB · 13 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| spack.io | 12 |
| packages.spack.io | 10 |