Thanks everyone for sharing yours :) , here are the ones I like:
- Hacker Newsletter: http://www.hackernewsletter.com/
- Schneier's Crypto-Gram: https://www.schneier.com/crypto-gram/
- Changelog: https://changelog.com/
- JS Weekly: http://javascriptweekly.com/
- Frontend Focus: http://frontendfocus.co/
- Pycoder's Weekly: http://pycoders.com/
- The Exponential: https://www.getrevue.co/profile/azeem
- Not a mailing list, but yields so much interesting stuff that I have to link to it: http://kottke.org/
- [fr] Nouveau Projet : http://us3.forward-to-friend1.com/forward/preview?u=a94ef0ee...
- And various other RSS feeds, via https://feedly.com/