Awesome list

Image editors

• Photopea - online Adobe Photoshop clone

HTTP & web tools

• HTTPS certificates
• crt.sh
• DIG - online DIG from Google
• HTTPBin - A simple HTTP Request & Response Service.
• Favicon Grabber - getting favicons from any URL'

Crypto

• Wasabi Wallet - Wasabi is an open-source, non-custodial, privacy-focused Bitcoin wallet for Desktop, that implements trustless CoinJoin.

Logs processing

• Filebeat
• Graylog
• Papertrails

Online publishing

• Telegra.ph - Post anything online
• pen.io

Privacy

• That One Privacy site - The site is meant to be a resource for those who value their privacy, specifically for those looking to escape from the abundance of biased, bought-and-paid-for shillery on the subject.

Tools

• Gradient Magic - A Free Gallery of Fantastic and Unique CSS Gradients
• RealFaviconGenerator - Favicon Generator. For real usage.

Font

• atipo Foundry - independent digital typeface foundry