| Key | Value |
| ACL | Access Control List |
| AFAICS | As far as I can see |
| AFAIK | As far as I know |
| AFAIR | As far as I remember |
| API | Application Programming Interface |
| ASAP | As soon as possible |
| ASCII | American Standard Code for Information Interchange |
| BTW | By the way |
| CMS | Content Management System |
| CSS | Cascading Style Sheets |
| DNS | Domain Name System |
| EOF | End of file |
| EOL | End of line |
| EOM | End of message |
| EOT | End of text |
| FAQ | Frequently Asked Questions |
| FTP | File Transfer Protocol |
| FOSS | Free & Open-Source Software |
| FLOSS | Free/Libre and Open Source Software |
| FUD | Fear, Uncertainty, and Doubt |
| FYI | For your information |
| GB | Gigabyte |
| GHz | Gigahertz |
| GPL | GNU General Public License |
| GUI | Graphical User Interface |
| HTML | HyperText Markup Language |
| IANAL | I am not a lawyer (but) |
| IE | Internet Explorer |
| IIRC | If I remember correctly |
| IMHO | In my humble opinion |
| IMO | In my opinion |
| IOW | In other words |
| IRC | Internet Relay Chat |
| IRL | In real life |
| KISS | Keep it simple stupid |
| LAN | Local Area Network |
| LGPL | GNU Lesser General Public License |
 | Laughing out loud |
| MathML | Mathematical Markup Language |
| MB | Megabyte |
| MHz | Megahertz |
| MSIE | Microsoft Internet Explorer |
| OMG | Oh my God |
| OS | Operating System |
| OSS | Open Source Software |
| OTOH | On the other hand |
| PITA | Pain in the Ass |
| RFC | Request for Comments |
| ROTFL | Rolling on the floor laughing |
| RTFM | Read The Fine Manual |
| spec | specification |
| TIA | Thanks in advance |
| TL;DR | Too long; didn't read |
| TOC | Table of Contents |
| URI | Uniform Resource Identifier |
| URL | Uniform Resource Locator |
| W3C | World Wide Web Consortium |
| WTF? | What the f*** |
| WYSIWYG | What You See Is What You Get |
| YMMV | Your mileage may vary |