Some Open Source Projects

Hostic
Generator for static web sites
https://github.com/holtwick/hostic

Briefing
Secure group video chat using WebRTC
https://github.com/holtwick/briefing

Peer.School
Secure video chat and whiteboard for schools
https://github.com/holtwick/peer2school
https://peer.school/

SeaSite
Static website generation
https://github.com/holtwick/seasite

XHTML2PDF
Generate PDF from HTML & CSS
https://github.com/xhtml2pdf/xhtml2pdf

More on https://github.com/holtwick/