CompanyStack alternatives

Tools that do what CompanyStack 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 CompanyStack.

Read 2026-10-26 · CompanyStack itself: Free plan · From ≈ $25/mo

With a free plan or free to use: Black Flag Alert, X1 Wealth, Ecomerate, Zephira, SEC EDGAR Filing Software + MCP Server & Alerts.

10 alternativesUnlike CompanyStack

#1
Black Flag Alert Finance MCP · sign-in
Looks up English and Welsh companies and scores their credit risk from Companies House filings, court judgments and insolvency notices.
Also: Analytics
8
Active
Free plan
#2
International company and director search Finance MCP · sign-in
Searches official company registries across 16 countries for director records, certified filings and certificates, with an API for querying them.
Also: Search, ComplianceMore widely used
1.8k
Active
From $586/mo
#3
X1 Wealth Finance MCP · sign-in
Reads a household's tax, legal and insurance documents, files each under the right entity, and flags deadlines and items needing confirmation.
Also: Data extraction
616
Active
From $97/mo
#4
Longbridge Finance MCP · sign-in
Brokerage app for trading US and Hong Kong stocks, ETFs and options, with live quotes, news, research and a portfolio assistant.
Also: Chat assistantMore widely used
193k
Active
2019
#5
Zyphe Finance MCP · sign-in
Runs know-your-customer, business verification and anti-money-laundering checks, with agents that trace owners and prepare reviews for human approval.
Also: Compliance
2.3k
Active
From $0.02 per use
2025
#6
RateZip Finance MCP · open
Compares mortgage, savings, loan and insurance rates from listed providers and emails alerts when rates reach a chosen level.
Own MCP serverMore widely used
29.3k
Active
2007
#7
Ecomerate Finance
Watches your brokerage positions and reads SEC filings, then texts you in iMessage when something in your portfolio changes.
Also: AnalyticsMore widely used
5
Active
From $11.99/mo
#8
Zephira MCP · sign-in
Searches official company registries and returns structured records of directors, shareholders, filed accounts and parent-subsidiary links.
Also: Search
13.4k
Active
From $99/mo
2015
#9
Poisar Finance MCP · open
Normalizes market headlines, scores them against the stocks and crypto they may move, and ranks opportunities with chart and risk checks.
Also: AnalyticsOwn MCP server
5.3k
Active
#10
SEC EDGAR Filing Software + MCP Server & Alerts Finance
Feeds SEC EDGAR filings, full text, financials and insider trades to AI assistants via an MCP server, citing each answer to its filing.
Also: Search, Analytics
2.5k
From $30/mo

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How this list is made: the words CompanyStack 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.