The 50 FREE Tech Resources listed below are truly free and are cross platform (many are web-based). There is no cost to download, nor do they have an expiration date/trial period. This list includes everything you would need to operate your organization or your business, aside from your computer and internet access. It even includes free web design, hosting, and domain name.
This not a comprehensive list of free cross platform tools. This list is made up of tools that I have used and tested (among many others not listed here). When it comes to “making the cut” I selected tools based upon 1. its ease of use 2. its ability to accomplish the task at hand 3. up-time. A tool that can perform miracles is great, but if no one knows how to use it, or if its constantly broke, its useless. Please also keep in mind that this is my list as of today’s publish date.
Productivity Suites
These suites include word processing, presentation, and spreadsheets, and more.
Open Office (download)
Google Docs
Zoho
Synchronous Collaboration (Real-Time)
Dim Dim (free for 20 people)
Elluminate (free for 3 people)
Document Collaboration
Google Docs
Writeboard
Wiki Spaces
Adobe Buzzword
Survey/Polls
Survey Monkey (max 10 questions & max 100 respondents per survey)
Survey Gizmo (max 250 respondents per month)
Doodle
Database
Zoho Creator (max 2 users, 3 databases, 1000 records)
Phone
Google Voice (you have to request an invite)
Skype (download)

Discussion Forums
PunBB (download & requires web server installation)
phpBB (download & requires web server installation)
Chat
Calendar
Event Registration
Project Management
File Sharing
Media Fire (unlimited amount of files, each can’t exceed 100MB)
4Shared (store up to 5GB, each can’t exceed 100MB)
Video Converter
Handbrake
Squared 5
Media Convert (download or service)
Video Editor
Platform specific but both come pre-installed.
- iMovie (mac)
- Windows Video Maker (windows)
Video Player
QuickTime (cross-platform BUT to view .wma & .wmv on Mac use with free Flip4Mac)
Flip4Mac
VLC

Audio Editor
Image Editor
eLearning
Udutu
(free course authoring/export)
Moodle (requires installation on a server)
Basic Website Creation
Weebly (includes hosting & free domain name)
Yola (includes hosting & several widgets)
Advanced Website Creation
KompoZer (HTML/CSS Editor & includes FTP)
Joomla (content management systems and templates)
Drupal (content management systems and templates)
Open Source Web Design (free web design templates)
Blog
WordPress (service or web server install with your own domain)


I recommend easy to use, free tech services and resources that I've personally used/tested. I select free tech tools to review based upon my past & current work with various non-profit organizations in which I provide(d) a wide variety of tech support services including general tech consulting, web design, database dev, and elearning. Additionally, I like to help those new to technology learn more through tips and simple explanations.
Gorgeous list!!