Nimbus Screenshot - Take screenshots and record video from your screen
Refined Twitter - A browser extension that improves the Twitter experience
Evernote Web Clipper - Clip, don't bookmark. Web Clipper is a browser extension that lets you save any web page, article, or image into Evernote. Download now.
Typefully - Write & publish great tweets, without distractions
ksnip - Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots. - DamirPorobic/ksnip
Thread Creator - The best way to create and schedule Twitter threads