SharePoint 2007 URL Quick List

The following is a list of SharePoint URLs to get to commonly used administrative functions on a MOSS or WSS v3 site. Not all links listed on this page are accessible to all user levels of a site. This is a quick list for speedy reference as compared to tracking down links through the admin screens or for faster jumping around sites within a site collection.
Function Add to the URL Notes
Add Web Parts Pane ?ToolPaneView=2 Add to the end of the page URL; WILL ONLY WORK IF THE PAGE IS ALREADY CHECKED OUT
Create New Site Content /_layouts/create.aspx
List Template Gallery /_catalogs/lt
Manage Site Collection Administrators /_layouts/mngsiteadmin.aspx
Manage Sites and Workspaces /_layouts/mngsubwebs.aspx
Manage People /_layouts/people.aspx
Manage User Permissions /_layouts/user.aspx
Master Page Gallery /_catalogs/masterpage Also includes Page Layouts
Modify Navigation /_layouts/AreaNavigationSettings.aspx
Recycle Bin /_layouts/AdminRecycleBin.aspx
Site Column Gallery /_layouts/mngfield.aspx
Site Content Types /_layouts/mngctype.aspx
Site Content and Structure Manager /_layouts/sitemanager.aspx
Site Settings /_layouts/settings.aspx
Site Template Gallery /_catalogs/wt
Site Usage Summary /_layouts/SpUsageWeb.aspx
User Alerts /_layouts/sitesubs.aspx
View All Site Content /_layouts/viewlsts.aspx
Web Part Gallery /_catalogs/wp

Source :
Web Part Page Maintenance ?contents=1 Add to the end of the page URL
Workflows /_layouts/wrkmng.aspx