AI App Marketplaces for B2B

Claude and ChatGPT app marketplaces are still early. Each ~150 apps today, +30% in the last 3 weeks.

But very different shapes.

Claude: 162 connectors. 79% pure B2B. Heavy GTM. e.g. Webflow, Docusign, Snowflake.

ChatGPT: 142 apps. 70% consumer. e.g. Instacart, DoorDash, Booking.com, Uber Eats

I analyzed all the listings. There's a clear difference in strategy. Claude is quickly covering the key enterprise functions (GTM, legal, dev tools) and verticals (healthcare, finance). ChatGPT is stacking tools in consumer spaces like travel, search, real estate.

To watch these marketing places as they expand, I built a living dataset to track all the B2B products across the two marketplaces (categories, platform presence, launch dates). Explore it or download it and have Claude analyze it.

—> AI App Marketplace Tracker

Some interesting category comparisons:

These AI app marketplaces are a huge distribution + adoption opportunity that's still taking shape. App Store in 2008 potential.

I think they're about to explode.

March 2023 — OpenAI launches ChatGPT Plugins. 11 at launch. Instacart, Expedia, Kayak, Zapier. The first attempt at "apps inside AI." It didn't stick — low engagement, fragile experience, users had to manually toggle plugins on. By early 2024 they were dead.

January 2024 — OpenAI tries again with the GPT Store. Custom GPTs anyone could build, with a promised revenue share. It was supposed to be the App Store moment. It wasn't. Most GPTs were thin prompt wrappers. Discoverability was poor. Revenue sharing never materialized.

November 2024 — Anthropic quietly open-sources the Model Context Protocol (MCP). A universal standard for connecting AI to external tools and data. No marketplace. No fanfare. Just plumbing. This turns out to be the most important move in the whole timeline.

March-May 2025 — OpenAI, Google, and Microsoft all adopt MCP. Anthropic's protocol becomes the shared infrastructure layer. (Imagine Apple inventing USB-C, then Samsung and Google adopting it.)

July 2025 — Anthropic launches the Claude Connectors Directory. Enterprise tools first — Notion, Canva, Stripe, Figma. Open to third-party submissions from day one.

December 2025 — OpenAI DevDay. Third time's the charm. "Connectors" become "Apps." The directory goes live. Developer submissions open. Instacart, DoorDash, Spotify rush in. Sam Altman pitches it as reaching "hundreds of millions of users."

February 2026 — Anthropic fires back with 13 new enterprise plugins. Google Workspace, DocuSign, Apollo, FactSet, Harvey. An entire legal vertical appears in one batch.

Today — 273 products across both marketplaces. Both growing fast with different directions.

OpenAI feels like the new search. 800M weekly active users. Consumer distribution is the big appeal. Instacart gets embedded checkout inside ChatGPT. DoorDash lets you order groceries from a conversation. Stripe is powering "buy it in ChatGPT." This is a consumer super-app play.

Claude (epsecially Claude Code, CoWork) is becoming the place you actually do work with agents. Their users are enterprise knowledge workers. People who live in code, spreadsheets, CRMs, and legal docs. So they're plugging directly into that workflow: FactSet for financial analysts, Harvey for lawyers, Clay for RevOps, Inflection for Marketers.

Many vendors will build on both. 30+ companies are dual listed today — Slack, Stripe, Notion, Monday, Figma, HubSpot. I'd expect everyone else is working on their submissions now (or awaiting approval).

If you're a CMO or CPO at a B2B company, this is worth paying attention to.

Both directories are under 200 apps. That's App Store in 2008 potential. Getting listed means something when there isn't a wall of noise yet. The Claude directory is still a curated list. It won't stay that way. We've seen this movie before.

The companies moving fastest aren't building AI products. They're making their existing products accessible TO AI. When a sales rep asks Claude to build a prospect list using your enrichment data, or a CFO asks Claude to pull your financial analytics, that's a new interaction surface you didn't have six months ago.

23 GTM tools on Claude today: Apollo, Clay, Braze, Outreach, ZoomInfo, Attio, Common Room, Klaviyo, HubSpot. 7 of those 23 were added in the last 3 weeks.

The smart companies will all be there soon. And then it's going to be about how to stand out.

Which platform are you betting on?