If you need to check on the status of your application for or renewal of your United States passport, here's where you can check.
A service that provides an API for searching and comparing prices and deals on tickets, vehicle rentals, and suchlike.
Uses OpenStreetmap data to plan navigational routing. Routes can be optimized for speed, time, or other parameters. Can technically be self hosted.
Up to 500 free isocron requests per day.
National Geographic has made available free-as-in-beer online USGS topographic maps for everyone to download and print out. Interactively select a region and get five pages of high resolution mapping data. Page 1 is an overview index map. Pages 2-5 are higher resolution quadrants of the index map.
7.5 minute resolution. Sized for 8.5x11 printing so you don't need a huge poster printer.
Requires only an e-mail address to get access.
A website where you can purchase copies of the US Bill of Rights on metal cards and luggage tags.
A far future RPG in which the players play field agents keeping the peace between a dozen civilizations by any means necessary throughout the universe. Also has strong themes of political intrigue, wonder, and responsibility. Published under the Creative Commons v3 license, though you can purchase PDFs of it from DriveThruRpg.com or buy dead trees from lulu.com if you want to support the project.
A wiki about international travel by international travelers. Talks about many different destinations, specific places and times you might want to visit, airports, local travel, things to do, food, telecommunications, and safety.
FrequencyCheck is a website that helps you determine if your current cellphone will work on the cellular networks of a particular country. You can either search for devices compatible with a particular carrier, or carriers compatible with a certain mobile device.
A website with a downloadable shell script which turns a raspi into a personal OpenVPN server. Lets you customize the configuration if you like. Appears to use a hardened OpenVPN configuration. The script will work with pretty much any Debian or Ubuntu v14.04 server you stand up someplace. The script can also be use to manage the server so you don't have to fight with the OpenVPN command lines.
Concerned about the hotel you'll be staying in? Look it up here before making reservations.
A site that lists every creditcard vendor and their Cardholder Verification Methods for the cards they issue. The site seems to be crowdsourced because the companies don't necessarily publish this stuff.