“Complexity is the worst enemy of security” security expert Bruce Schneier said over twenty years ago. The complexity of our systems grows steadily.

Therefore it is important to reduce complexity.

The tools listed here should be

• free software (open source software)
• Privacy respecting
• simple in design (i.e. not complex), see also How we measure
• lightweight (i.e. no bloatware), see also How we measure
• easy to learn and simple to use
• non-elitist
• still maintained