MightyText 16.67

SMS from your computer, or Tablet, using your Android phone # (SMS & MMS)

Publisher: MightyText: SMS Texting w/ PC - SMS Messaging 

WaSend: WhatsApp Any File Send 1.7

Publisher: iDad Labs 

Firechat 9.0.14

Free messaging. No signal or mobile data needed.INTERNET OF US (TM)

Publisher: SKYBLU 

eBuddy Messenger 3.6.1

Publisher: eBuddy 

Signal 5.50.1

Say “hello” to privacy.

Publisher: Signal Foundation 

Email TypeApp 1.9.8.108

Make your email smarter

Publisher: TypeApp LLC 

GroupMe 5.67.7

Stay in touch with the people who matter most.

Publisher: GroupMe 

K-9 Mail 6.305

K-9 Mail is a 100% free and open source email client for Android.

Publisher: K-9 Dog Walkers 

Sketch Guru - Handy Sketch Pad 1.3.0

An amazing sketch book for you to enjoy sketch fun anytime and anywhere!

Publisher: Doodle Joy Studio 

TU Me 1.4.1

Make calls and send messages using Wi-Fi or 3G data

Publisher: Telefónica Digital UK