Alternatives
Find free and open source alternatives to popular proprietary software.
Name (A–Z)
Formspark
Form Backend Services
$25
one-time
1 open source alternative
Formspree
Form Backend Services
2 open source alternatives
FortiClient VPN
VPN & Secure Access
1 open source alternative
Forward Email
Email Platforms
$3
month
1 open source alternative
Foxit PDF Editor
Document Management Systems
$9.99
month
3 open source alternatives
Free Download Manager
File Management & Sync
Free
2 open source alternatives
FreeConvert
File Management
$12.99
month
1 open source alternative
FreshBooks
Finance & Accounting
$2.30
month
9 open source alternatives
Freshdesk
Customer Support & Success
3 open source alternatives
Front
Customer Support & Success
$25
month
1 open source alternative
FullStory
Product Analytics
Free
1 open source alternative
FusionAuth
Authentication & SSO
$162
month
1 open source alternative
Fyxer
Email & Communication
$22.50
year
1 open source alternative
GIPHY Capture
Video Editors
Free
1 open source alternative
GNU Screen
Terminal Multiplexers
Free
1 open source alternative
GOG GALAXY 2.0
Gaming
Free
3 open source alternatives
Gaia GPS
Personal Tracking Apps
1 open source alternative
GameMaker
Game Development Platforms
$99.99
one-time
3 open source alternatives
Garmin Connect
Personal Tracking Apps
Free
1 open source alternative
Gather
Collaboration & Communication
$12
month
1 open source alternative
Ghost
Blogging Platforms
$18
month
3 open source alternatives
Ghostarchive
Web Crawlers
1 open source alternative
Giftster
Personal Tracking Apps
1 open source alternative
GitBook
Documentation & Knowledge Base
$65
month
5 open source alternatives
GitHub
Version Control & Collaboration
$4
month
9 open source alternatives
GitHub Codespaces
Code Editors
4 open source alternatives
GitHub Copilot
AI Coding Agents
$10
month
4 open source alternatives
GitHub Desktop
Version Control & Collaboration
Free
1 open source alternative
GitHub Gist
Git Platforms
Free
2 open source alternatives
GitKraken
Version Control & Collaboration
$10
month
3 open source alternatives
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