Top 10 Open-Source Alternatives to BusyContacts

Product categories

APIs Appointments and Scheduling CRM Calendar And Scheduling Call Management Contact Management Contacts Development Productivity Project Management Task Management Work Collaboration

Summary

The top open-source alternatives to BusyContacts are Nextcloud Contacts, Whenever, and Basecamp. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Nextcloud Contacts Landing Page
1

Nextcloud Contacts

The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.
Pricing:
- Open Source
#Contact Management #Contacts #Call Management
Whenever Landing Page
2

Whenever

Casual calendar app for iOS
Pricing:
- Open Source
#Productivity #Event Management #Events
Basecamp Landing Page
3

Basecamp

A simple and elegant project management system.
Pricing:
- Paid
- Free Trial
- $99.0 / Monthly (flat price)
#Project Management #Productivity #Task Management 37 social mentions
Flow Landing Page
4

Flow

Stop managing projects from your inbox.
Pricing:
- Open Source
#Project Management #Task Management #Work Collaboration 1 social mentions
Focus Landing Page
5

Focus

New Tab page that gives you a moment of calm and inspires you to be more productive.
Pricing:
- Open Source
#Time Tracking #Tool #Productivity 24 social mentions
Simplenote Landing Page
6

Simplenote

The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
Pricing:
- Open Source
#Note Taking #Task Management #Project Management 78 social mentions
Cal.com Landing Page
7

Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
Pricing:
- Open Source
#APIs #Open Source #Calendar And Scheduling 53 social mentions
peekhq.com
8

Peek

Test over 40+ aspects of any website. Test for everything.
Pricing:
- Open Source
#Project Management #Productivity #Task Management
Productivity Power Tools Landing Page
9

Productivity Power Tools

Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.
Pricing:
- Open Source
#Regular Expressions #Programming Tools #Development 357 social mentions
Firmao CRM Landing Page
10

Firmao CRM

CRM and ERP software for your business. Use free version for 14 days and register in Firmao.
Pricing:
- Open Source
- Freemium
- Free Trial
- $18.0 / Monthly
#CRM #Project Management #Office Suites 10 social mentions