Amicus integrates your calendar, contacts, email, phone calls and matters and reminds you to create docket entries for all appointments, emails, calls, documents, etc. The beauty and economic benefit of the software is that it helps you to capture your time and to keep you organized. Over the years, Amicus has added things like Amicus mobile (which allows you to access features from your mobile device or any web browser) and a client portal (which allows you to permit clients to access certain information).
I have always considered the most important element of the software to be the communications module. If you turn on email integration and make notes of all of your calls using the software, you can quickly review what has been happening in a case by turning to the communications module. You won't forget to docket your time for all those communications.
While many other features have been added, the developers have not made material improvements to the communications module since email integration was added in about 2001. Obvious improvements have been needed since then. For instance, you cannot access scanned or faxed letters from the communications module. These can be added and viewed in the documents module and in a chronology module (added in about 2015), but neither option is not ideal. Flipping through communications should be as easy as flipping the pages of a paper file, but it's not. It is the organizational equivalent of having one file folder with your emails and phone calls, and another file folder with your faxes and letters. You have to flip from one folder to the other to view each. Also, you should be able to filter communications. For instance, you should be able to display only client communications, or only counsel communications, but you can't (even though there is a field for role on file for each contact attached to a file). The chronology module will put everything including all communications and documents (including letters and faxes) in chronological order, but you can't filter the chronology to show only communications (it will also show every document, docket, calendar appointment, etc.).
I have looked at alternative practice management software several times over the years and haven't seen one that I am adequately attracted to want to make what would be a painful change.