Useful Tools & Software.

Video Players

Potplayer

VLC

Video Converters

Handbrake

VLC Player too has an inbuilt converter.

Download Managers

Universal

JDownloader 2 (link with official adfree version provided by the dev) : This can download any video from most videohosts. As well as direct video links.

Youtube & Videos

https://video-download.co/

Video Download Helper Works with Popular browsers for downloading youtube videos.

Clipconverter.

Android: Tubemate

IOS: Cloud Video Player

Image Downloaders.

Downthemall

Note: Downthemall does not work with the new firefox quantum. (FF version 57). Use Waterfox instead.

Instagram.

IOS: This version of Repost Saves Stories, Videos and Images. Bit of a warning, it’s loaded with too many Ads and Ad spots.

Android: Story Saver

Save High Res images.

Gif and Video Editing.

gfycat and imgur have their own inbuilt tools. However for more intricate editing.

Avidemux(Free)

Professional:Sony Vegas (easy), Premier Pro.

Mobile Editing.

Premier Clip