Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Standuply - Run daily standup meetings and track your metrics in Slack
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.
MeetNotes - Increase Productivity with Meeting Notes Tool. More effective minutes, Prepare Agenda, Collaborative Notes & Action Items.
TextMe - TextMe is a free calls and messaging application at both local and international levels.