Which tool can post to Bluesky, Threads, and Mastodon at the same time?
Cadencz, Buffer, Typefully, and Postiz can all post to Bluesky, Threads, and Mastodon from one place. Cadencz is the AI pick: it writes a separate native draft for each network from your product context and publishes after you approve. Buffer covers all three on its free plan, Typefully is the writing-first choice, and Postiz is open source.
Mixpost covers all three on its paid Pro edition if you host it yourself. Hypefury supports Bluesky and Threads but does not list Mastodon on its plans.
Bluesky, Threads, and Mastodon tools compared
| Tool | Bluesky | Threads | Mastodon | AI writing | Starting price |
|---|---|---|---|---|---|
| Cadencz | ✓ | ✓ | ✓ | Separate native draft per network from your product context | Free (2 accounts); Starter $19/mo |
| Buffer | ✓ | ✓ | ✓ | AI Assistant on every plan, Free included | Free (3 channels); Essentials from $5 per channel/mo |
| Typefully | ✓ | ✓ | ✓ | Writing Assistant on all plans | See pricing page |
| Postiz | ✓ | ✓ | ✓ | AI copilot on every hosted plan | Standard $29/mo hosted; open source |
| Hypefury | ✓ | ✓ | ✗ (not listed on plans) | "AI trained on your posts" on Full | Full $19/mo (all channels) |
| Mixpost | ✓ (Pro) | ✓ (Pro) | ✓ (Lite and Pro) | AI Assistant on Pro only | Lite free; Pro $299 one time, self-hosted |
Cross-posting vs native rewriting
Cross-posting sends identical text to every network. It is quick, and for a short announcement it is fine. The cost shows up in longer posts: Bluesky counts 300 graphemes and does not shorten URLs, while Threads and Mastodon allow 500 characters (Mastodon's default, which each server can raise). A post written for 500 characters gets cut or rejected on Bluesky, and a post written for 300 leaves room unused elsewhere.
The bigger difference is tone. Each of these networks has its own norms, and a post that reads as written for somewhere else gets less attention. Native rewriting keeps the same idea and changes the delivery for each network. Doing that by hand three times is the work most people skip, which is the job Cadencz is built to do; if you prefer writing it yourself, Typefully and Buffer let you edit each version before it posts.
Cadencz: best for a native draft on each network
Best for: founders who want Bluesky, Threads, and Mastodon covered without writing three versions themselves.
Cadencz reads your website into a Brain, plans the week, and writes a separate draft for each network inside its limits. Every post waits for your approval. It publishes to 9 live channels: Bluesky, X, LinkedIn, Threads, Mastodon, Telegram, Discord, Slack, and dev.to.
Free costs nothing and needs no card: 2 connected accounts, 40 AI generations a month, unlimited scheduling, and 15 posts to X a month on one handle. Starter is $19 a month for 5 connected accounts, 150 AI generations, and 40 X posts, and adds the Critic, a second agent that rejects weak drafts. Pro is $39 a month and covers all 9 live channels with 400 AI generations and 100 X posts. Yearly billing is 20 percent off.
Note that Free connects 2 accounts, so covering all three networks needs Starter.
Buffer: best free option for all three
Best for: posting the same update to all three networks without paying.
Buffer supports Bluesky, Threads, and Mastodon with automatic publishing, basic analytics, and community replies. The free plan connects 3 channels with 10 scheduled posts each and includes the AI Assistant. Essentials starts at $5 per channel per month with a 14-day trial.
Typefully: best for writing once, carefully
Best for: writers who want a calm editor and a single place to post to the text networks.
Typefully publishes to X, LinkedIn, Threads, Bluesky, Mastodon, and Instagram. Its Writing Assistant is on all plans and can adapt a post across platforms. Plan prices did not render on its pricing page today, so see the pricing page.
Postiz: best for open source with a hosted option
Best for: technical teams that want an API, an MCP server, or to self-host.
Postiz lists Bluesky, Threads, and Mastodon among its networks. Hosted Standard is $29 a month for 5 channels with unlimited posts and an AI copilot, and every hosted plan includes an MCP server, a public API, and webhooks. It is open source if you would rather run it yourself.
Hypefury: best for Bluesky and Threads with autoplugs
Best for: creators on Bluesky and Threads who do not need Mastodon.
Full is $19 a month with all channels, listing Bluesky, Threads, LinkedIn, Instagram, and TikTok, plus AI trained on your posts and Bluesky list import for its engagement builder. Mastodon is not listed on its plans, and its pricing FAQ says it no longer supports X.
Mixpost: best for owning the software
Best for: people who want to host their own scheduler and pay once.
Mixpost Lite is free and open source and publishes to Mastodon, X, and Facebook Pages. Pro is a one-time $299 with a year of updates, publishes to all its platforms including Bluesky and Threads, and adds an AI Assistant. You run the server yourself, with PHP, MySQL, and Redis.
Frequently asked questions
- Can I post to Bluesky and Threads at the same time? Yes. Cadencz, Buffer, Typefully, Postiz, and Hypefury all publish to both from one place, and Mixpost does on its Pro edition. Cadencz writes a separate version for each; the others let you write once and edit per network.
- Is there a free tool to cross-post to Bluesky, Threads, and Mastodon? Buffer's free plan connects 3 channels, enough for all three, and includes its AI Assistant. Cadencz Free connects 2 accounts. Postiz is open source, and Mixpost Lite is free but covers only Mastodon of the three.
- Will Mastodon users mind cross-posted content? Some will, when a post obviously belongs to another network: cut off at another platform's limit, or full of mentions and tags from elsewhere. A version written for Mastodon, inside its limit, avoids that.
- Do character limits differ between Bluesky, Threads, and Mastodon? Yes. Bluesky allows 300 graphemes and counts URLs at full length, Threads allows 500 characters, and Mastodon allows 500 by default, though a server admin can raise it.