1crm.comSoftware by 1CRM Corp.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Pipeliner CRM - Pipeliner CRM empowers small to medium-sized sales teams to close more deals and lower risk. Implementation and training are a breeze. Mac & Windows.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Bigin by Zoho CRM - Pipeline-centric CRM built and priced for small businesses
Slack - A messaging app for teams who see through the Earth!
Zoho CRM - Omnichannel CRM for Businesses of all sizes