Social
Mastodon
social network alternative to Twitter with privacy controls and no ads
Mastodon offers a privacy-conscious alternative in the social space, with a stronger focus on data protection than many mainstream tools.
Who is this for?
✓ Good for you if:
- • You want a social network without ads or algorithmic manipulation
- • You prefer platforms where you choose your server
- • You want granular privacy controls (public, unlisted, followers-only, direct)
- • You need content warnings and sensitive media controls
- • You want to self-host your own instance for complete control
⚠ Think twice if:
- • You need end-to-end encrypted direct messages (DMs are not )
- • You want the largest social network user base
- • You need simple, mainstream social media experience
- • You want to avoid federation complexity (data shared across servers)
- • You need complete anonymity (requires email)
Overview
Mastodon implements a federated social network using the ActivityPub protocol (W3C standard). The platform is built on Ruby on Rails with PostgreSQL for data storage. Users join independent servers (instances), each with autonomous policies and moderation. Posts support visibility levels: public (federated across instances), unlisted (accessible via link but not in public timelines), followers-only, and direct messages. Accounts can be set to private, requiring follower approval. Direct messages are not end-to-end encrypted and are accessible to instance administrators. The federated architecture means data is shared across servers when interacting with users on other instances. Mastodon uses OAuth 2.0 for authentication, bcrypt for password hashing, and supports two-factor authentication via TOTP. The platform uses standard TLS/SSL encryption for all connections. Users can self-host instances for complete control over data, policies, and moderation. The codebase is open source (AGPL-3.0) and maintained by Mastodon gGmbH, a German non-profit organization.
Privacy highlight
social network with no ads, no , and user-controlled . Choose your instance or self-host for complete control.
Quick facts
- Country:
- Decentralized (self-hostable)
- Pricing:
- Free
- Platform:
- Web, Android, iOS
- Technical:
- Intermediate
- :
- Yes
- :
- Minimal telemetry
- :
- Yes
- Open-source status:
- Fully open source
- :
- Yes
- :
- Yes
Key features
- Privacy-friendly social platform.
Security & encryption Click to expand
- Yes
- Encryption protocols
- ,
- Mastodon uses standard / for all connections. User passwords are hashed using bcrypt. The platform does not implement for direct messages - messages are stored on servers and accessible to instance administrators. Mastodon uses .0 for and supports two-factor (2FA) via . Session tokens are stored securely using Rails . The platform uses PostgreSQL for data storage with standard database at rest (depends on hosting provider).
- Offline support
- No
Telemetry & tracking Click to expand
- Minimal telemetry
- No
- Ip no
- Mastodon instances collect minimal data. Most instances do not collect usage statistics or by default. Instance administrators can optionally enable basic , but this is not enabled by default. The platform does not send data to external services. Crash reporting and error are typically handled locally on the instance. Mastodon does not include third-party scripts or services in the default installation.
Jurisdiction & compliance Click to expand
- Mastodon is decentralized - data residency depends on which instance you join. Each instance is independently operated and may be hosted in different jurisdictions. The main Mastodon organization (Mastodon gGmbH) is based in Germany. Users can choose instances in their preferred jurisdiction or self-host their own instance.
- policies vary by instance, as each instance is independently operated. Most instances retain user data (posts, media, account information) until the user deletes their account or content. Deleted content is typically removed from the database, though may retain data for a period. Instance administrators set their own retention policies. Users can export their data and delete their accounts at any time. Federation means that content shared with other instances may be retained on those instances according to their policies.
- Legal frameworks
- GDPR (where applicable). Each instance may be subject to different legal frameworks depending on its jurisdiction.
- Revenue sources
- Donations, Enterprise, Hosting
Editorial signals Click to expand
- 86
- Trust score
- 82
- Trust breakdown (0–10)
- Encryption: 70, Audits: 75, Open source: 95, Telemetry: 90, Jurisdiction: 85, Transparency: 80, Trackers: 95
- Editorial notes
- Usability: 75, Performance: 80, Family friendly: 70
User experience Click to expand
- Signup requirements
- Email address required for account creation. Some instances may require email verification. Username and display name are also required. No phone number or other personal information required.
- Onboarding difficulty (1-5)
- 2
- Accessibility features
- Mastodon includes accessibility features such as keyboard navigation, screen reader support, and high contrast mode. The platform follows WCAG guidelines. Accessibility features may vary by instance and client application.
Backup & portability Click to expand
- Yes
- Migration tools
- Mastodon supports account migration via ActivityPub protocol, allowing users to move their account to a different instance while preserving followers. Users can export their data including posts, media, and follow lists in JSON format. Import tools are available for migrating from other platforms including Twitter.
- Account recovery is typically handled through email-based password reset. Users can export their account data as a backup in JSON format. Instance administrators may provide additional recovery options depending on their policies. Two-factor authentication recovery codes should be saved by users.
Similar privacy apps
Same categoryPeerTube
Score 87PeerTube offers a privacy-conscious alternative in the social space, with a stronger focus on data protection than ma...
Lemmy
Score 88Lemmy offers a privacy-conscious alternative in the social space, with a stronger focus on data protection than many ...
Pixelfed
Score 85Pixelfed offers a privacy-conscious alternative in the social space, with a stronger focus on data protection than ma...
Related Guides
Best Apps and Tools for Ultimate Data Protection
Discover the top privacy apps in 2025...
Read guide →How to Choose a Secure Messenger: Complete Guide
Learn how to choose a secure messaging app. Compare encryption, metadata protection, and privacy ...
Read guide →How to Set Up 2FA: TOTP vs Push vs Security Keys
Learn how to set up two-factor authentication. Compare TOTP apps, push notifications, and securit...
Read guide →