When comparing Zulip vs Jami (formerly GNU Ring, SFLphone), the Slant community recommends Jami (formerly GNU Ring, SFLphone) for most people. In the question“What are the best Skype alternatives?” Jami (formerly GNU Ring, SFLphone) is ranked 7th while Zulip is ranked 20th. The most important reason people chose Jami (formerly GNU Ring, SFLphone) is:
Calls have crystal clear audio.
Ranked in these QuestionsQuestion Ranking
Pro Helps keep track of different conversations
Instead of rooms or channels Zulip is built around topics. This allows you to have multiple conversations at the same time without conversations interfering with each another. It also allows you to reference conversations without clutter.
Pro Free and open source software
Zulip is free and open source under the Apache 2.0 license.
Pro Easy asynchronous conversations
Its threaded model helps people working in different timezone's communicate effectively.
Pro Apps for every platform
Pro Hosted or on-premise, with data export tools so you can migrate
Pro Crystal clear audio
Calls have crystal clear audio.
Pro Free and open-source code
Contribute to and/or audit the source code here.
Pro Video conferences
Make audio and video calls with multiple people on Jami. Easily add new participants. Because Jami does not rely on servers, the conference is hosted by the device of the person who initiates it. It mixes the audio and video feeds from all the participants and sends it back to them so everyone can see and hear each other. For this reason, the maximum number of participants depends on the hosting device's computing power and available bandwidth. The developers have tested video conferencing with up to sixteen members; however, it could potentially go higher.
Pro Screen sharing and media streaming
You can change the source of the video feed you send your friends during a call, allowing you to share either your entire screen or only sections. You can also stream any audio and video media files, allowing your friends to see or hear them without having to transfer them first. This is accessed by right-clicking on the screen during a call.
Pro 4K/UHD video calling
If your device has a 4K camera, you can use it to its full potential with Jami thanks to the support for Ultra HD resolution. It is only really useful if the other person has a 4K screen, but if it's the case, they will see you as clearly as if you were there.
Pro Audio and video messages
Record and send audio and video messages. This is convenient for when you want to send a quick message without typing.
Pro Active project
Active community with frequent articles posted on their blog.
Pro Works without Internet access
If required, works within a Local Area Network (LAN) without the need for an Internet connection.
Pro Open development
The Jami software has many features and is stable; yet, the rate of development is increasing as more developers are contributing to provide even more features while keeping the software stable.
Pro No central server required
If there is a wired and/or wireless connection between the caller and receiver, you can make a call.
Pro Language support
Translated into many languages and open for more translations.
Pro SIP support
Answer and make VoIP telephone calls from anywhere in the world where you are connected to the internet.
Pro Intercom calls and file transfers between devices
The same account can be setup on multiple devices. You can then make calls between the same account on different devices. You can also transfer files between devices without using third-party services (like email accounts).
Pro File sharing
Send files of all sizes between Jami users. FLAC, GIF, JPEG, JPG, MKV, MP3, MP4, OGG, PNG, WAV, WEBM and WEBP file extensions are automatically downloaded.
Pro Cross platform support (computers, smartphones and televisions)
Works with devices running Android, Android TV, GNU/Linux, iOS, macOS and Windows operating systems.
Pro Supports multiple accounts
You can have multiple Jami and SIP accounts active concurrently.
Con Takes some getting used to
As most chat software uses the concept of channels or rooms, getting in the habit of splitting each topic off in a separate category can require some getting used to and discipline.
Con Rename contact/conversation
Unable to rename a contact/conversation in the list.
Con Chat history shared across devices
Con Group text chat
Not yet supported; however, group video conferences are supported.