
How alternatives
Tools that do what How 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 How.
Read 2026-10-28
With a free plan or free to use: Balou Tools, Cobytes, Cloudflare, GitHub, BlackVeil, Drwho, Scan.mx.
- #1

Balou ToolsSecurity
Checks a domain's DNS, TLS, mail authentication, security headers, SEO and performance, and scores the findings with recorded evidence.
Free planAlso: Monitoring, Security
35 linking domainsFrom ≈ $35/mo - #2

CobytesSecurityMCP · open
Scans a domain's DNS, email authentication and web security records, reporting failing checks with readable fix guidance.
Free planAlso: Security
97ActiveFree2024 - #3

CloudflareSecurityMCP · 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.
Free planAlso: Agents
4.9MActiveFrom $20/mo2009 - #4

UpcheckDeveloper toolsMCP · sign-in
Watches sites for uptime, certificate expiry, DNS changes, domain renewals, ports and page content, then alerts teams by email, Slack, Discord, Teams or webhook.
Also: MonitoringMore widely used
22ActiveFrom $10/mo - #5

GitHubDeveloper tools
Hosts Git repositories with pull requests, code review, issue tracking and Actions pipelines for building, testing and deploying code.
Free planAlso: Workflow automation, Code generation
42MFrom $4/user/mo2007 - #6

BlackVeil
Scans a domain's public DNS records for email authentication, transport, DNS integrity and exposure checks, reporting what each found.
Free planAlso: Security
350ActiveFrom $29/mo - #7

DrwhoDeveloper toolsMCP · open
Runs 32 free DNS, mail, web and developer checks, mostly in the browser, also exposed through an MCP server.
Free planMore widely used
Little sign of useFrom $29 once - #8

TinyFishDeveloper toolsMCP · sign-in
Provides web search, content fetching, browser automation, and agent APIs for AI applications to access and interact with live web content.
Also: SearchMore widely used
150kActiveFrom $0.00 per use - #9

MicrosoftDeveloper tools
Sells Windows, Microsoft 365 and Azure cloud services, plus Surface devices and Xbox consoles.
More widely used
135MActive1975 - #10

Scan.mxDeveloper toolsMCP · open
Scans a domain's mail servers, SPF, DKIM and DMARC records, DNSSEC and blocklist status, then assigns a letter grade.
Free planAlso: Security
Little sign of useActive
← How: the full cardAll Developer tools tools →
How this list is made: the words How 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.
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