Alternatives
Find free and open source alternatives to popular proprietary software.
Name (A–Z)
Maze
UI/UX Design
1 open source alternative
MediaMonkey
Media Servers
$5.99
one-time
1 open source alternative
Medium
Blogging Platforms
5 open source alternatives
Mendix
Low-Code/No-Code
€50
month
1 open source alternative
Mentimeter
Survey Tools
2 open source alternatives
Meshy AI
AI Development Platforms
$20
month
1 open source alternative
Messenger
Encrypted Communication
Free
1 open source alternative
Meta Store
E-commerce Platforms
$19.99
month
4 open source alternatives
MetaMask
Cryptocurrency & Blockchain
Free
1 open source alternative
MetaStock
Investment Tracking
1 open source alternative
Metronome
Subscription & Billing Management
1 open source alternative
Mibbit
Team Chat & Messaging
1 open source alternative
Micro.blog
Blogging Platforms
$5
month
1 open source alternative
Microsoft 365
Office Suites
$9.99
month
1 open source alternative
Microsoft 365
Office Suites
$9.99
month
6 open source alternatives
Microsoft Bookings
Appointment Scheduling
1 open source alternative
Microsoft Copilot
AI Personal Assistants
$18.00
year
2 open source alternatives
Microsoft Copilot Studio
AI Agent Platforms
$18
month
3 open source alternatives
Microsoft Dynamics 365
ERP Systems
3 open source alternatives
Microsoft Edge
Web Browsers
Free
5 open source alternatives
Microsoft Entra ID
Authentication & SSO
$7.00
year
1 open source alternative
Microsoft Excel
Spreadsheets
$9.99
month
2 open source alternatives
Microsoft Exchange
Collaborative Workspaces
7 open source alternatives
Microsoft Exchange Server
Email Platforms
7 open source alternatives
Microsoft IIS
API Infrastructure
2 open source alternatives
Microsoft OneDrive
File Management & Sync
8 open source alternatives
Microsoft OneNote
Notes & Knowledge
Free
2 open source alternatives
Microsoft OneNote
Notes & Knowledge
Free
4 open source alternatives
Microsoft Outlook
Email Clients
$9.99
month
2 open source alternatives
Microsoft Power Apps
Low-Code/No-Code
$20.00
year
4 open source alternatives
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