The request names OpenDDE, but none of the candidate products is OpenDDE or a product built for it, and no source describes it, so no candidate can be confirmed as the named product. The candidates below are general developer platforms and are offered only as possible starting points if you meant a different tool or a broader category.

A question back: Could you say what OpenDDE is supposed to do (for example, a DDE or diagramming tool, a data or dev tool, or something else), or give its maker or a link? With that I can search for the right product.

1. 1

   GitHubgithub.comverified and signed

   A developer platform for hosting code and collaborating on software, offering an MCP server, CLI and skills 1.

   WebsiteDocsPricingGet started

   official:CLI · github-mcp-serverskill · add-community-extensionskill · git-commitskill · acquire-codebase-knowledge+2,468 community tools built for it

   for agents: openapi-to-application-code · aspnet-minimal-api-openapi · nano-banana-pro-openrouter

2. 2

   Stripestripe.comverified and signed

   A financial infrastructure platform for accepting payments and managing billing, with an MCP server, API and SDKs 3.

   WebsiteDocsPricingGet started

   official:MCP server · @stripe/mcpAPI · Stripe APISDK · stripelibrary · Stripe.netCLI · stripe-cli+34 community tools built for it

   for agents: GetReviews · stripe · api

3. 3

   Cloudflarecloudflare.comverified and signed

   A cloud platform for running applications and securing traffic, with an MCP server and CLI 5.

   WebsiteDocsPricingGet started

   official:MCP server · @cloudflare/mcp-server-cloudflareCLI · cloudflaredskill · cloudflareskill · durable-objects+259 community tools built for it

   for agents: device-dex-test-details · device-dex-test-create-device-dex-test · device-dex-test-update-device-dex-test