
Zernio
Ayrshare
Blotato
Postiz
Upload-Post
Buffer
Hootsuite
Publish and schedule posts across Instagram, X, LinkedIn, Facebook, Threads, YouTube, TikTok, Pinterest, Bluesky, and Telegram with one unified social media API. No developer apps or OAuth maze.

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Website, pricing, platforms and company facts side by side.
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| Website | postzen.dev | diffee.me |
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What each product offers, as listed by its team.


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Powerful APIs that enable you to send social media posts effortlessly. Post and manage your users social account via an API.
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Publish to 9 social platforms from one tool or one API call. AI writes, designs, and schedules a week of content in minutes, with a hosted MCP server so Claude and other agents can post for you.
Compare Blotato to PostZen.Dev or Diffee:

Streamline your social media with Postiz. Schedule posts, analyze performance, and manage all accounts in one place.
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Social Media API for developers. Post to TikTok, Instagram, YouTube, Facebook & 19 more platforms with one API call. MCP server for Claude/ChatGPT, white-label for SaaS. 70k+ users.
Compare Upload-Post to PostZen.Dev or Diffee:

Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
Compare Buffer to PostZen.Dev or Diffee: