Mastodon is a free, open-source social network. It is decentralized, allowing users to have their own server instances, called Mastodon instances, but...
Best Megablock Alternatives ranked by AI · updated Aug 2026
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Megablock is an X tool that lets users block the followers of a selected account in bulk. It is aimed at people who want to reduce coordinated harassment or unwanted audience overlap without manually blocking accounts.
Top 6 Megablock alternatives
Twitter One Click Block is a browser extension that allows users to easily block unwanted accounts on Twitter with just one click.
Block Together was a Twitter service for sharing blocklists and automatically blocking accounts associated with selected users. The service is no longer...
Pros
- Supported collaborative blocking against harassment campaigns
- Could block large groups of accounts at once
- Used shared community-maintained blocklists
Cons
- No longer available
- Depended on Twitter API access
- Was limited to Twitter accounts
Bluesky is a microblogging service built on the open AT Protocol for users who want portable identities and more control over feeds....
Pros
- Simpler onboarding than Bastyon and most blockchain-based networks
- Custom feeds provide more control over content discovery
- Open protocol supports account and social-graph portability
Cons
- More centralized in day-to-day use than Bastyon
- Fewer built-in token incentives and blockchain features
- Moderation and federation tools are still evolving
5
Blue Blocker
Blue Blocker contributors
Blue Blocker is an open-source browser extension that automatically blocks or unfollows accounts with X Premium verification. It is designed for X...
Pros
- Open-source and free to use
- Automates blocking instead of requiring manual review
- Can target a large and changing class of accounts
Cons
- Targets verification status rather than shared community blocklists
- May block accounts the user would prefer to keep
- Requires a supported browser and ongoing X compatibility
6
Fediseer
Fediseer contributors
Fediseer is a reputation and moderation service for federated social-network communities, particularly Mastodon administrators. It lets instances publish endorsements, denouncements, and relationships...
Pros
- Supports shared moderation signals between federated servers
- Useful for administrators managing abusive or spam-heavy instances
- Works across parts of the ActivityPub ecosystem
Cons
- Primarily serves server administrators, not everyday users
- Does not provide Block Together-style personal X blocking
- Coverage depends on participating instances
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