Image Uploader alternatives

Uploading and screenshoting:

ShareX
ShareXmod
Lightshot
PickPick
monosnap
Greenshot
KiberInfinity's Screen Shooter
File & Image Uploader
Snagit  ($$)
clip2net.com
jetscreenshot.com
joxi.ru
shup.com
http://screenpic.net/

pixlr.com
droplr.com
JShot
FluffyApp
Shotty
gyazo.com
QIP Shot
snag.gy (HTML5)
Jumpshare

PostImage

PicBackMan

Rightload

MyImgur

Shutter (Linux)

Neembuu Uploader

FScreen

Pioneer Screenshoter
floomby.ru

screencapture.ru

 

licecap - not really an alternative, but a lighweight and opensource program for screen capturing to GIF

 

Making video snapshots:

thumbnailme

Video Thumbnails Maker  ($$)

Video Images Uploader 

MPC (video player)

Free Video to JPG Converter

Batch Video to Image Extractor

Video Snapshots Genius ($$)

FrameShots  ($$)

Video Snapshot Wizard ($$)

Able Video Snapshot ($$)