Hall

Getting in touch with your work colleagues is easy with a tool like Hall, a mobile app you can use to contact them or share important documents in just a few taps. Its interface is similar to other common communication apps, so it's easy to figure out how to use it.

One of the best features in Hall is that you can search for other users with a phone number or email address. That way, if you have a long list of contacts for colleagues, suppliers, and customers, this app can create a comprehensive list of all the people you know who are also using Hall. You can also register your profile with a unique email address if you'd rather not be searchable to everyone.

When you chat, you can send text, photos, documents, and files stored on your Dropbox account. This makes it much easier to attach important files stored on the cloud, though to do so, you'll have to have your Dropbox account open.

Hall also has technical support to help you solve your problems at any time of day with a live chat feature. You can get help for basic issues or talk to specialized technicians for more specific problems.