Apps like Basecamp - Project Management

Here are some great alternatives to Basecamp - Project Management by 37signals :
TeamTime for Basecamp
TeamTime for Basecamp
★5.0
Basecamp Arena
Basecamp Arena
★4.8
Learn Project Management
Learn Project Management
★4.8
Asana: Where work connects
Asana: Where work connects
★4.3
Projectmates
Projectmates
★4.1
Project Management
Project Management
★4.3
TaskTag: How to project.
TaskTag: How to project.
★4.5
Smartsheet: Projects & Teams
Smartsheet: Projects & Teams
★4.8
Plaky — Project Management
Plaky — Project Management
★3.8
Nifty: Project Management
Nifty: Project Management
★3.6
Project Manager
Project Manager
★4.4
Master Tasks & Teams - Lyria
Master Tasks & Teams - Lyria
★4.3
SKYSITE Projects Construction
SKYSITE Projects Construction
★4.2
Trello: Manage Team Projects
Trello: Manage Team Projects
★4.1
Redbooth - Project Management
Redbooth - Project Management
★4.1
Lio | CRM, Project, Workflow
Lio | CRM, Project, Workflow
★4.2