Browse
Alternatives
Categories
Collections
Latest
Trending
Self-hosted
AI-native
New
Coming soon
Discount codes
Resources
Tags
Licenses
About us
Blog
Advertise
Advertise
Submit
OpenAlternative
Alternatives
Categories
Collections
Resources
Advertise
Submit
Sign in
Ad
Learn more
/
Tags
/
Anti Spam
Open Source Projects tagged "Anti Spam"
A curated collection of the best open source projects tagged "Anti Spam". Each listing includes a website screenshot along with a detailed review of its features.
Order by
▼
Friendly Captcha
Invisible bot protection that respects user privacy
Stars
37
Last commit
3 days ago
License
MPL-2.0
Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.
Open Source
Alternative to:
reCAPTCHA
Ad
Ad
Postiz
– The All-in-One agentic social media scheduling tool
Learn more
Popular proprietary software::
Spotify Alternatives
2
Claude Alternatives
12
Claude Code Alternatives
18
CapCut Alternatives
5
Notion Alternatives
23
Lovable Alternatives
3
Amazon Prime Alternatives
2
Wispr Flow Alternatives
7
Adobe Photoshop Alternatives
4
Gemini Alternatives
7
Microsoft Word Alternatives
5
Grok Bot Alternatives
10
Popular categories:
AI Agent Platforms
34
Low-Code/No-Code Platforms
37
Project Management Suites
24
AI Personal Assistants
21
Infrastructure Monitoring Tools
20
Note-Taking Tools
18
Team Chat & Messaging Tools
17
Web Analytics
16
PaaS & Deployment Tools
18
Personal Knowledge Management (PKM) Tools
16
Collaborative Workspaces
17
Cloud File Sync & Share Tools
14
Ad
Sent
Messaging Infrastructure for Developers. One API for SMS, WhatsApp, and RCS across 190+ countries.
Get Started Free