
Description: Siphon SIP is a voice over IP (VoIP) software for making internet calls. It allows you to make free SIP calls to other Siphon users as well as cheap calls to phones globally.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Olvid is an open-source, privacy-focused messaging app for iOS and Android. It provides end-to-end encrypted messaging using advanced cryptographic protocols to ensure messages remain confidential. Key features include contact discovery without disclosing phone numbers, Perfect Forward Secrecy, encrypted cloud backup, and encrypted group conversations.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API