Just some websites I personaly like. In no specific order
Recorded Future Triage - A nice place to scan, and play around with viruses; basically a VM Sandbox to test files for their harm, this also has very detailed reports, 10/10
Twitter Emoji For Everyone - Twitter’s open source emoji has you covered for all your project's emoji needs. With support for the latest Unicode emoji specification, featuring 3,245 emojis, and all for free. Has image formats of SVG and PNG, providing constant emojis over your platform. 9.5/10
Winaero Tweaker - Winaero Tweaker is a freeware app. It is an all-in-one application that comes with dozens of options for fine-grained tuning of various Windows settings and features. It also includes most options which were available in free standalone apps at Winaero.com and extends them as much as possible. 10/10