Sidestream

A chat app with a side of insights

A free, open-source, cross-platform, cross-model AI chat app that can add useful, interesting, amusing, and critical information you wouldn't have known about otherwise.

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Human conversation is usually more rewarding than talking with an AI model - because most people aren't responding to what you said as a "helpful assistant".

They realize they might know something you wouldn't even ask about, and eagerly tell you about it.

They're reminded of something interesting or amusing, and steer the conversation in a more exciting direction.

They might realize that one of you misspoke, misremembered, made an incorrect assumption, or that you've been talking past each other - and they course correct the conversation.

This app does ALL of that and makes your conversations with AI way more useful and interesting than you've ever experienced before.

Packed with useful features and thoughtful design choices

Bring your own API keys - Anthropic Claude, OpenAI ChatGPT, and/or Google Gemini No need for subscriptions. Pay only for what you use. Use these companies' best models without a subscription. No usage limits.

Six "discovery" modes Useful & Informative, Obscure & Interesting, Amusing & Entertaining, Lateral Thinking, Skeptical & Critical, Fact Checker

Add "discoveries" to your main chat with one click

Voice input

Forking/branching chats

Searchable chat history

Switch models and even AI companies in the middle of a chat

Export any chat to easily shareable HTML files

Dark mode

What are "Discoveries"?

The discovery engine specifically looks for:

Lesser-known but highly relevant information
Content you wouldn't have asked for because you didn't know it existed
Fascinating observations to steer the conversation in more exciting directions
Lateral thinking to feed your understanding
Unique perspectives & unconventional sources
Constrasting and alternative views

NOT the obvious first-page Google results, Wikipedia summaries, or mainstream articles

This app requires you to have an API key from Anthropic, OpenAI, and/or Google Gemini

Learn more about API keys

Ready to try it?

Available for macOS, Windows, and Linux

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