Useful services

Online Hosting

[Koding](https://koding.com/)

Deploy and test an Ubuntu VM for free (dies after 20 minutes of inactivity). Has a browser file explorer, text editor and terminal. Allows ssh connections.

[000webhost](http://www.000webhost.com/)

Free server. Low space and few tools (php, mysql, cron and ftp), but it's free!

[neocities](https://neocities.org/)

Free website hosting. Basic, but neat interface.

Security

[Have I been Pwned](https://haveibeenpwned.com/)

Check if you have an account that has been compromised in a data breach

Browser's TLS/SSL

Check the state of your browser's TLS/SSL with How's my SSL or SSL labs

Inspect HTTP requests:

These allow you to inspect your HTTP requests, such as POST: Request Bin, Henry's HTTP Post Dumping Server, httpbin(1)

Others

[You Pronounce It](http://youpronounce.it/)

Find the English pronunciation of words with youtube.