Qiqqa is by far the strongest solution for research and managing pdf's. Zotero, named as a comparison is weak as it does not allow pdf;s to be loaded into its interface - you need to use a pdf reader, which defeats its whole purpose. With Qiqqa documents in a library can be searched together. It has excellent maps of your libraries. It is not prefect, having a few glitches, but still is the only one of its kind.
Based on our record, Trillian seems to be more popular. It has been mentiond 5 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I can’t believe trillian is still a thing. What a blast from the past. Thanks for that. Source: over 1 year ago
Yeah I think that was a long time ago. These days I think it's just another IM: https://trillian.im/. Source: over 1 year ago
You might look at https://trillian.im but I think corporate changes have harmed them as well. Source: almost 2 years ago
Two decades ago I used trillian and mirianda for all the popular messaging protocols, https://trillian.im/. - Source: Hacker News / over 2 years ago
Trillian supports XMPP and seems like it would meet your requirements. Source: almost 3 years ago
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Pidgin - Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.