Daum Equation Editor is a free, online tool for quickly writing equations that you can save as text or images to use in documents. You can use the equation editor by typing on your keyboard and or selecting symbols from the Daum Equation Editor's menu.
Magic Scroll is a Chrome web app that you can use to read ePub files on your desktop or laptop even if you do not have an internet connection.
Quick Note is a sticky note application that runs in your Chrome web browser. You can take notes offline in your browser and sync when you reconnect to the web. If you utilize the Chrome syncing option, you can access your notes from any computer. Quick Note can sync with Diigo too.
Useful Periodic Table is a reference app for chemistry students. Useful Periodic Table contains the information high school chemistry students need. The app also includes some practice quiz activities.
If you or your students struggle to come up with strong passwords, Password Chameleon is an app to try. This app will generate a random, secure password for any site that you visit.
Geo Notepad is a Chrome application that offers a different take on reminders and notes. While most note-taking and reminder services are based on time stamps, Geo Notepad is based on location. When you write notes, you can assign them to locations. Then when you return to that location Geo Notepad will show you a list of your notes from that place. For example, I could create a list of notes that are tied to my house and a list tied to school. Then when I get to school in the morning Geo Notepad will open the list of school-based notes for me.
If you're a frequent user of Google Docs like I am, you will want to install the Chrome App for Google Docs. The Chrome App for Google Docs allows you to edit your documents when you're not online. When you reconnect to the web your documents will be synced to your Google Docs online account.