Underlayer alternatives

Tools that do what Underlayer does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from Underlayer.

Read 2026-10-27 · Underlayer itself: Free plan · From $124/mo

With a free plan or free to use: Paragon, GrowthBook, Cloudflare, BetterAgent, GitHub.

10 alternativesUnlike Underlayer

#1
Paragon Developer tools
Provides embedded integration infrastructure so SaaS products ship native integrations with customers' apps, handling auth, data sync and workflows.
Also: Agents, RAGMore widely used
24.4k
Active
Free plan
2019
#2
Merge Developer tools
Provides one unified API for HR, payroll, ATS, CRM, accounting and file-storage integrations, plus authenticated tool access for AI agents.
Costs moreAlso: Agents, Workflow automation
35.1k
Active
From $650/mo
2020
#3
GrowthBook Analytics MCP · sign-in
Runs A/B tests, manages feature flags, and analyzes product data from your data warehouse.
Also: AnalyticsMore widely used
34.8k
Active
From $40/user/mo
2020
#4
Cloudflare Security MCP · open
Proxies website traffic through a global network for CDN caching, DNS, DDoS protection and a web firewall, plus Workers serverless code and zero-trust access.
CheaperAlso: Agents
4.9M
Active
From $20/mo
2009
#5
Microsoft Developer tools
Sells Windows, Microsoft 365 and Azure cloud services, plus Surface devices and Xbox consoles.
More widely used
135M
Active
1975
#6
BetterAgent Developer tools
Reads Next.js routes and server actions to let users run agents that call your APIs and mutate your data.
CheaperAlso: Agents
30 installs/mo
Active
From $0.99/mo
#7
Apideck Developer tools MCP · open
Single API that reads and writes bills, invoices, ledgers and bank feeds across many accounting and ERP systems.
Costs moreAlso: Workflow automation
11.8k
Active
From $599/mo
2020
#8
GitHub Developer tools
Hosts Git repositories with pull requests, code review, issue tracking and Actions pipelines for building, testing and deploying code.
Also: Workflow automation, Code generationMore widely used
42M
From $4/user/mo
2007
#9
DevExpress Developer tools MCP · open
Supplies UI controls, reporting, dashboard and document-processing libraries that developers embed in .NET, Java and JavaScript apps.
Own MCP serverMore widely used
41.2k
Active
From $249.99/yr
1998
#10
Unified Developer tools MCP · sign-in
Pass-through API and MCP layer that proxies live requests to 1,350 SaaS integrations across 37 categories without storing customer data.
Costs more
1.2k
Active
From $750/mo
2023

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How this list is made: the words Underlayer is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.