According to the different metrics found on internet, globally the following startups are using these apps to increase efficiency-
Slack
The best example of new sort of communication system comes from Slack. It conceived three years ago. Five million people now use the messaging software. It cuts down on time-consuming emails and permits team members to connect with each other instantly.
CamCard
If you have the habit of losing the business card or cannot carry many business cards in your wallet, then the app is for you. It is now one of the most used apps in the world of business card apps. This emerging app can scan and read cards in over 15 languages.
Google Drive
If you travel a lot and want to edit documents or download it, then Google Drive is the perfect resource for you. Along with online storage space, it provides you with the feature that the whole team can edit the doc, ppt, excel sheet at the same time and can chat in it too.
Evernote
The top student in the class always take note, and before the exam, almost everyone rushes to him/her, and this hampers his/her study a bit. However, if you use Evernote, then you can avoid this by making notes and sharing it with classmates. You can also record lectures and write them at the same time.
Grammarly
Are you confident what you are writing is error-free and easy to read? If you do not have the confidence, then this is for you. It detects the grammatical error and shows you the corrected version of it.