Which is best free online video editing software?

[Cezarr]

Which is best free online video editing software? What tools do you use?

[Gregorry]

Free List:
Virtualdub
Davinci Resolve
Movie Maker
Although free version will not help much, especially at a advanced level, you will get struck.
Its better to go for the best pro one at the cheap price.

[Mcterner]

Which is best free online video editing software? What tools do you use?

I use only fast tools. For example if you want to rotate your video you can use https://rotatevideo.online/ this free service. Very comfortable. You only need to open video, rotate it and download.