Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Visily - The easiest and most powerful wireframe software for agile teams.
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
RemNote - All-in-One Tool For Thinking & Learning
Zeplin - Collaboration app for UI designers & frontend developers