SynapseBridge
SynapseBridge is a multi-provider AI workbench for Windows. Access hundreds of cloud AI models through a single, polished interface — no subscriptions, no monthly fees. You bring your own API keys, you pay only for the tokens you use, and Gain Publications never sees a byte of your data.
Built for serious AI work
Built from the ground up in WinUI 3 for Windows 11, SynapseBridge brings together everything you would otherwise switch between half a dozen tabs to do.
- 14+ cloud providers. Anthropic, OpenAI, Google, Groq, Fireworks, Together, OpenRouter, DeepInfra, Mistral, Cohere, Perplexity, xAI, and more. Mix and match in the same workspace.
- Three studios in one app. Chat for general conversation. Coding Studio with an autonomous agent that reads, writes, and tests across your project files. Image Studio with text-to-image, image-to-image, and mask-based inpainting across the major image providers.
- Perpetual project memory. Each project keeps its own decisions, key facts, lessons, and activity log. Your AI remembers what you decided last Tuesday — and why.
- Local MCP bridge. Connect SynapseBridge to other AI tools (Claude, ChatGPT, and others) over a local HTTP endpoint. Use one model to orchestrate another. Read project memory. Run agents. The entire capability surface is exposed and documented.
- Workspace permissions. Define which folders the agent can read, write, or freely operate in. Sensitive directories stay protected.
- Token tracking. See exactly what each conversation cost you, per model, in real time.
Local-first, privacy-respecting
All your conversations, project files, and API keys are stored locally on your computer in %APPDATA%\SynapseBridge. When you send a message, it goes from your device directly to the provider you chose — Gain Publications has no servers in the loop, no telemetry, no analytics, and no accounts.
Coming soon to the Microsoft Store
SynapseBridge will be available as a one-time purchase through the Microsoft Store. No subscription. Runs on Windows 10 (build 19041 or later) and Windows 11.
Watch this space for the launch announcement and a direct Store link.
System requirements
- Windows 10 build 19041 or later, or Windows 11
- 64-bit processor
- 500 MB disk space
- Internet connection (for AI provider calls)
- Your own API key from at least one supported provider
Support
For questions, bug reports, or feature requests, contact support@gainpublications.com.
SynapseBridge™ is a trademark of Gain Publications. © 2026 Gain Publications. All rights reserved.