CONVERTERS

Convert media free, fast and online - www.online-convert.com

Easily Convert Bitmap Images To Clean Vector Art - www.vectormagic.com

File Converter. Online & Free - convertio.co

TRANSFERING FILES

WeTransfer - www.wetransfer.com

RADIO

Radio Garden - radio.garden

ENGLISH LESSONS

Free english video lessons - www.engvid.com

Duolingo - www.duolingo.com

TOOLS

RegExp - regexr.com

BOOKS

Programming Notes for Professionals books - goalkicker.com