Here’s the documentation of all the searchboxes I found across WordPress.org. Feel free to doublecheck me. Included screenshots for cases different from the standard header searchbox.
Homepage – https://wordpress.org/
- Standard Searchbox in header (Searches Documentation/Codex)
- Screenshot: http://cl.ly/2u2M0R0J0H3X2h2B2C2d
Showcase – https://wordpress.org/showcase/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Site Searchbox in Right Column (Searches entire Showcase/Same search parameters regardless of Tag or Flavor)
- Screenshot: http://cl.ly/130G1e0J0y43073a2B0m
Extend – https://wordpress.org/extend/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Extend/Plugins – https://wordpress.org/extend/plugins/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Plugin search box in main content area (Searches plugin directory)
- Screenshot: http://cl.ly/0G0o3x1v0d121V2v0Q0Q
- Extend/Plugins/Search – ex. https://wordpress.org/extend/plugins/search.php?q=jetpack&sort=
- Standard Searchbox in the header (Searches Documentation/Codex)
- Plugin Searchbox in main body (searches plugin directory)
- Screenshot: http://cl.ly/441t10200i2z1h0h1501
- Extend/Plugins/Tags – ex. https://wordpress.org/extend/plugins/tags/widget
- Standard Searchbox in the header (Searches Documentation/Codex)
- Plugin Searchbox in left column (Searches entire plugin directory)
- Screenshot: http://cl.ly/0A1P1I0I3G370V1f2g0l
- Extend/Plugins/Developer Center – ex. https://wordpress.org/extend/plugins/about/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Plugin Searchbox in left column (Searches entire plugin directory)
- Screenshot: http://cl.ly/0A1P1I0I3G370V1f2g0l
- All subpages with the same scheme.
- Extend/Themes – https://wordpress.org/extend/themes/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Theme Directory search box in main content area (Searches theme directory)
- Screenshot: http://cl.ly/3o1F0v370U0v012m0q3h
- Subpages only have the standard Searchbox in the header
- Extend/Ideas – https://wordpress.org/extend/mobile/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Idea Searchbox in the main body (Searches Ideas Forum)
- Screenshot: http://cl.ly/3T1D290G082U0V0p0P2c
- Extend/Ideas/Search – ex. https://wordpress.org/extend/ideas/search.php?search=database&forum_id=0
- Standard Searchbox in the header (Searches Documentation/Codex)
- Not as pretty Idea Search in the main body (Searches Ideas Forum)
- Screenshot: http://cl.ly/1j1R4046181I1r0x0J0N
About – https://wordpress.org/about/
- Standard Searchbox in the header (Searches Documentation/Codex)
- All Subpages have the same searchbox scheme
Docs – https://codex.wordpress.org/Main_Page
- Standard Searchbox in the header (Searches Documentation/Codex, has different placeholder text: Search the Codex vs Search WordPress.org)
- All Subpages have the same searchbox scheme
Blog – https://wordpress.org/news/
- Standard Searchbox in the header (Searches Documentation/Codex)
- All Subpages have the same searchbox scheme
Forums – https://wordpress.org/support/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Forum Searchbox in the left column
- Screenshot: http://cl.ly/423B3N0i280e1N133R2J
- Subpages and Forum Templates only have the standard Searchbox in the header
Hosting – https://wordpress.org/hosting/
- Standard Searchbox in the header (Searches Documentation/Codex)
Download – https://wordpress.org/download/
- Standard Searchbox in the header (Searches Documentation/Codex)
- Subpages and Forum Templates only have the standard Searchbox in the header
Also, found this to be a little unsightly: when on the Hosting page, the active tab in the main navigation touches up against the Downlaod tab. Could we add some margin here? Screenshot: http://cl.ly/101U161b411q19461x1D