Clio - Clio provides a full suite of web-based practice management tools targeted specifically at the administrative needs of sole practitioners and small firms.

Freeplane - Freeplane is a powerful and free software for building mind maps.

MyCase - Practice More, Manage Less.

SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.

PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.

Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.