@ -44,6 +44,7 @@ A curated list of mostly [*free* and open source](https://en.wikipedia.org/wiki/
- [Delta Chat](https://delta.chat/en/) - *Alternative to WhatsApp* — Delta Chat doesn’t have their own servers but uses the most massive and diverse open messaging system ever: the existing e-mail server network. Chat with anyone if you know their e-mail address, no need for them to install DeltaChat! All you need is a standard e-mail account.
- [Jitsi](https://jitsi.org) - *Alternative to Zoom* — Jitsi is a collection of free and open-source multiplatform voice (VoIP), videoconferencing and instant messaging applications for the web platform, Windows, Linux, macOS, iOS and Android.
- [Wire](https://wire.com) - *Alternative to Slack/Whatsapp/SMS* - Wire is an encrypted communication and collaboration app created by Wire Swiss. It is available for iOS, Android, Windows, macOS, Linux, and web browsers such as Firefox. Wire offers a collaboration suite featuring messenger, voice calls, video calls, conference calls, file-sharing, and external collaboration all protected by a secure end-to-end-encryption. Wire offers three solutions built on its security technology: Wire Pro which offers Wire's collaboration feature for businesses, Wire Enterprise includes Wire Pro capabilities with added features for large-scale or regulated organizations, and Wire Red the on-demand crisis collaboration suite. They also offer Wire Personal, which is a secure messaging app for personal use.
- [Eqivo](https://eqivo.org) - *Alternative to Twilio & Plivo* — Started as a reimplementation of the open source Plivo Framework (unmaintained as of 2015), Eqivo provides the connective tissue between web applications and voice-enabled endpoints, such as traditional phone lines (PSTN), VoIP phones, webRTC clients etc.