I've put up a new site running on Google App Engine: Techstacks Tools. Presently, there are a couple of tools there useful for web site administrators and bloggers but I have some ideas for some additional things that should get out on the site soon. Right now, there are two mini-apps:
bling, which is a port of my blog ping script to run as a web application. I'm not really sure if developing the command line script will continue unless folks want me to. I would appreciate any feedback.
smping, which is a subset of bling that is meant for sending out sitemap pings to search engines when a web site has been updated, but the site in question is not a blog (so there is no need to send notifications out to.
I use both presently whenever I post changes to my blog and to the HOWTO site and they both seem to work well. I will need to make some additional changes to them in the near future to get a contact form working and to make the required fields actually be required but for version 0.7.5, I'm pretty happy so far.