Blink vs PortSIP Softphone

Blink is a real-time communications client that uses SIP to connect with service providers, Bonjour on a local network and SIP2SIP. A SIP account from a provider is required. Voice and video features include Opus audio, H.264, VP8 and VP9 video, acoustic echo cancellation and ZRTP media encryption. Messaging supports MSRP chat, OTR encryption, SIMPLE presence and XCAP server storage. File transfers use MSRP and TLS and include progress reports and delivery confirmation. Screen sharing can run with audio, while conferences can combine participant management, VoIP, messaging, presence, file transfers and screen sharing. Blink supports multiple SIP accounts, iCloud syncing between computers and built-in account sign-up through SIP2SIP. It also lists OpenPGP messaging support and says it does not collect end-user data. The free plan is free and lists Linux, Mac and Windows downloads. Available features may differ by operating system and version, and some conferencing functions require a conference server. Blink was founded in 2002.

PortSIP Softphone is a free app for Windows, iOS, and Android with browser calling and SIP support. It is the legacy app for PortSIP PBX v16.x; the maker directs users of PBX v22.x to PortSIP ONE. The broader PortSIP PBX offering brings calls, messaging, and meetings together, including call routing, SMS, WhatsApp, team messaging, contact center tools, and voice and video meetings. Contact center functions include skill-based routing, queue strategies, live wallboards, analytics, real-time monitoring, and training tools. The maker also describes AI features for call and voicemail transcription, notes, summaries, and sentiment analysis. PBX deployments can run on customer infrastructure, Azure, AWS, or GCE, in a cloud, data center, or on premises using Docker. Microsoft 365 integration supports user provisioning, single sign-on in web and native apps, and directory and contact syncing. The PBX Free Edition costs nothing and supports 3 extensions and 2 simultaneous calls. Paid PBX licenses require a quote and may be perpetual or annual.