Opal vs Postmine

Do you hate losing and searching for what you already have and are tired of trying and quitting productivity apps? If so, that's because you remember where things are, not just what they're called.

Manage your notes, documents, and important files on a visual, infinite canvas. Organize your draggable content spatially on a digital desk where everything remains visible, what's important stays top of mind, and whatever you need in the moment is opened and ready in seconds without the frustration of digging through buried folders, tree structures, categories, and clicks.

• Author content with rich media in a markdown-based block editor
• Build your knowledge base, write scripts, author manuals, cross-reference standard operating procedures, or just connect ideas with internal item links
• Share and collaborate in real time
• Connect your AI agent with the Opal Recall skill to Opal through the API
• Store PDFs, images, and files
• Publish to the web

One-click Chrome Extension captures trending posts from LinkedIn, Reddit, Facebook, and X. Your AI transforms each into 7 platform-ready pieces — blog post, LinkedIn article, Twitter thread, Facebook post, Instagram caption, Reddit post, and FAQ — in under 30 seconds.

Set Brand Voice profiles so every piece sounds like you, not generic AI. Bulk Capture processes entire feeds at once. A built-in Content Calendar lets you schedule, track, and stay consistent. AI Reply Suggestions help you engage faster with smart responses.

BYOK — bring your own Claude, OpenAI, Gemini, or DeepSeek key. You control your AI costs. Relevance Scoring highlights which discussions are worth repurposing.

Built for content creators, social media managers, marketing teams, solopreneurs, and freelance writers — anyone who sees great conversations online and thinks "this would make a great post" but doesn't have hours to write it.

Start with a $1 trial. No long-term commitment. Cancel anytime.