Conversion Tools
Multiple Conversions (you name it, they convert it): https://gchq.github.io/CyberChef/
64bit Hex to Dec floating point: https://babbage.cs.qc.cuny.edu/ieee-754.old/64bit.html
Multi Timestamp decoder: https://www.digital-detective.net/dcode/
Miscellaneous
Various systems' UI and settings for walkthroughs: https://www.chasms.com
File Signatures: https://www.garykessler.net/library/file_sigs.html