Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Better Proposals - A simple tool to help you send better proposals to your clients.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Ignition App - Reclaim time, profitability and cash flow with Ignition by automating proposals, billing, payment collection and workflows in a single platform.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Mimiran - Fun, "anti-CRM" for independent consultants who hate "selling".