Free Communication Software
Viber
Viber is a cross-platform voice over IP application that allow people to make free and secure calls and messages to anyone, anywhere. With Viber, you can create group chats and make group calls, send stickers and emojis over chats that are 100% synced between devices, including 1-tap transfer of calls. Viber is available for free on Android, iOS, macOS, Linux and Windows.
BuddyCloud
Buddycloud is an open source project that helps developers add chat, video and social features to their app without being locked into a proprietary solution. With BuddyCloud it's easy to build communities that facilitates rich communication. The open-source toolset is written in Java and is designed to scale well and save you your team time, when building an online community.
Google Hangouts
With Google Hangouts, you can keep in touch with through chat, video or voice calls in person or as a group. Google Hangouts is a cross-platform messaging app developed by Google that is available for Android, Chrome OS, iOS, Google Chrome or any browser that is compatible with Google Chrome Extensions.
Contact Form 7
Contact Form 7 is a WordPress plugin that can be used to create and manage multiple contact forms. The plugin allow you to customize your forms and connect them to email to send confirmation emails designed with flexible and simple markup. Contact Form 7 also provides CAPTCHA and spam filtering with Akismet.
K-9 Mail
K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email. K-9 Mail is designed for both novice and power users and offers lots of features for everyone. It provides features like Push IMAP Support, GPG & PGP/MIME support, Per Account Notifications, Unified Inbox, White and Dark Theme, and Signatures.
Airtable
Airtable is a cloud collaboration software that is part spreadsheet and part database. With Airtable, teams can orginaize their work, their own way utilizing powerful filtering, sorting, and grouping viewed in different ways including grid view, gallery view, kanban view and calendar view on the web or on a mobile device. Airtable also integrates with many popular third-party software and provides a robust API that can be used to access your content programatically.
Medium
Medium is an open bloging and publishing platform where readers find dynamic thinking, and where expert and undiscovered voices can share their writing on any topic.
Minds
Minds is an alternative, blockchain-based social media platform. With Minds you can earn money or cryptocurrency for using the platform and interactive with other people. Tokens can be used to boost posts or crowdfund other users and their cause. Minds was to be a privacy-focused social network that is censorship resistant, and where users can interact without having their personal data harvested.
Twitter
Twitter is a popular social network and microblogging site for breaking news in entertainment, sport, politics and nice topics. On Twitter, users can share their ideas in 280 characters or less, or retweet others that they agree with or want to amplify. What makes Twitter unique is the opportunity to discover what's happening in the world in close to real-time. The fact that you can follow a specific audience in a specific niche also makes twitter a great tool for diving deeper and staying up-to-date with topics of your interest.
LOVOO
More than 70 million people use LOVOO to meet new people with same interests or a similar lifestyle nearby. LOVOO is an online dating app for flirting, chatting, and meeting new people for Android and iOS. With LOVOO you can discover stories next door, get connected with new people around you, and express yourself by sharing amazing moments. LOVOO is more than just a profile with a picture, its a way to discover love and friendship in your area through events.