# Best Financial Data APIs for Medium-Sized Businesses ## How Many Financial Data APIs Products Does G2 Track? **Total Products under this Category:** 229 ### Category Stats (Aug 2026) - **Average Rating:** 4.39/5 (↓0.03 vs Jul 2026) The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** FlashAlpha (+1.83%) - Among all products in this category, FlashAlpha recorded the largest rating increase compared to last month _Last updated: August 15, 2026_ ## How Does G2 Rank Financial Data APIs Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 1,400+ Authentic Reviews - 229+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Financial Data APIs ![G2 Grid® for Financial Data APIs plotting products by satisfaction and market presence](https://www.g2.com/categories/financial-data-apis/grids.png?focus%5B%5D=146655&focus%5B%5D=1331564&focus%5B%5D=43004&focus%5B%5D=112380) Highlighted products: Merge Unified, Spade, Flinks, and Excel Price Feed. Underlying data: [Grid® JSON](https://www.g2.com/categories/financial-data-apis/grids.json?focus%5B%5D=merge-unified&focus%5B%5D=spade-spade&focus%5B%5D=flinks&focus%5B%5D=excel-price-feed&segment=mid-market) **Sponsored** ### Flinks Flinks is an embedded finance platform that brings together data connectivity, intelligence, and payments through powerful APIs and ready-to-use dashboards. Financial institutions, lenders, and fintechs use Flinks to onboard customers faster, make smarter decisions with financial data, and move money securely, all from one platform. Our Solutions - Flinks Connect: Give your users a fast, secure way to link their bank accounts and instantly access data from 15,000+ financial institutions across North America. - Flinks Upload: Verify bank statements and void cheques in real time to catch fraud, speed up decisions, and keep onboarding moving. - Flinks Enrich: Turn raw financial data 4,500 financial attributes covering income, spending, employment, and risk insights to make faster, more confident decisions. - Flinks Pay: Initiate account-to-account payments with Interac Request for Money and EFT, backed by built-in bank account verification. - Flinks Outbound: Launch and scale an open banking program with Flinks handling the infrastructure, partner accreditation, consent management, and ongoing support. Flinks powers 1M+ monthly connections and processes 1M+ monthly document uploads across North America, with a network of 15,000+ connected financial institutions. Visit www.flinks.com to learn more and book a product demo. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1336&secure%5Bchosen_at%5D=2026-08-15T09%3A10%3A37Z&secure%5Bdisplayable_resource_id%5D=1336&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1336&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=43004&secure%5Bresource_id%5D=1336&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Ffinancial-data-apis%2Fmid-market&secure%5Btoken%5D=6a78bdb19a021f6ae9cd24e7dd2520f905949c3f7b1a07fc2f3082b740bc8a73&secure%5Burl%5D=https%3A%2F%2Fwww.flinks.com%2F%3Futm_campaign%3Dg2-clicks-financial-data-api%26utm_source%3Dg2%26utm_medium%3Dcpc&secure%5Burl_type%5D=custom_url) ### [Merge Unified](https://www.g2.com/products/merge-unified/reviews) Merge Unified is the leading Unified API for thousands of organizations, including frontier LLMs, Fortune 500 organizations, and other B2B SaaS companies. Merge Unified allows businesses to add hundreds of integrations to their products through a single API. Instead of building and maintaining each integration in-house, your developers can integrate once with Merge and instantly access over 220 integrations across accounting, HRIS, ATS, CRM, file storage, knowledge base, and ticketing categories. Our platform normalizes data and handles authentication, pagination, and rate limiting, eliminating the complexity of managing multiple APIs. Merge handles the entire integration lifecycle, from implementation to maintenance. Our observability features give your customer success team full visibility and control, while our engineering team catches and resolves integration issues before they impact your customers. Thousands of companies trust Merge to accelerate product development, unblock sales, reduce customer churn, and save engineering resources—allowing them to focus on their core product. Merge adheres to industry-standard compliance frameworks including SOC 2 Type II and ISO 27001, and complies with privacy regulations like HIPAA, GDPR, and CCPA. **Average Rating:** 4.7/5.0 **Total Reviews:** 251 #### How Do G2 Users Rate Merge Unified? - **Quality of Support:** 9.7/10 (Category avg: 8.6/10) - **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 8.6/10) - **Ease of Use:** 9.3/10 (Category avg: 8.8/10) - **Ease of Admin:** 9.5/10 (Category avg: 8.5/10) #### Who Is the Company Behind Merge Unified? - **Seller:** [Merge](https://www.g2.com/sellers/merge) - **Company Website:** merge.dev - **Year Founded:** 2020 - **HQ Location:** San Francisco, US - **Twitter:** @merge\_api 3,254 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b8c8a1452840c830f1c090f6b81e4fb545794f2830c09fe6655dd108b396c4e8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmerge-api%2F&secure%5Burl_type%5D=linkedin_company_website) 159 employees on LinkedIn® #### Who Uses This Product? - **Who Uses This:** Software Engineer, CEO - **Top Industries:** Computer Software, Information Technology and Services - **Company Size:** 60% Small, 30% Medium #### What Do G2 Reviewers Say About Merge Unified? _AI-generated summary from verified user reviews_ ##### Pros - Users commend the **exceptional customer support** from Merge, appreciating their responsiveness and effective assistance throughout integration. - Users find Merge Unified to be **incredibly easy to use** , with excellent support and intuitive integration options. - Users value the **easy integration options** and excellent API documentation, enhancing their connectivity with various systems. - Users value the **integration capabilities** of Merge Unified, simplifying connections across various accounting and HR systems. - Users value the **well-documented APIs** of Merge Unified, enabling quick integration and seamless support for their needs. ##### Cons - Users experience **integration issues** with complex models, requiring effort to identify supported options for seamless connectivity. - Users note that Merge Unified can be quite **expensive** , especially as their needs and client base grow. - Users find the **poor documentation** of Merge Unified to be inconsistent and lacking detail for effective integration. - Users face **data limitations** with Merge Unified, leading to unexpected schema issues and lack of visibility into data translation. - Users find the **learning curve steep** for non-technical individuals, impacting overall usability and understanding of features. #### What Are Recent G2 Reviews of Merge Unified? **["Seamlessly consolidates IdP and HRIS platforms"](https://www.g2.com/survey_responses/merge-unified-review-12684831)** **Rating:** 5.0/5.0 stars _— Adam S._ [Read full review](https://www.g2.com/survey_responses/merge-unified-review-12684831) **["Exceptional Support and Rapid Feature Releases"](https://www.g2.com/survey_responses/merge-unified-review-11968048)** **Rating:** 4.5/5.0 stars _— Bhavik P._ [Read full review](https://www.g2.com/survey_responses/merge-unified-review-11968048) #### What Are G2 Users Discussing About Merge Unified? - [What is Merge API used for?](https://www.g2.com/discussions/what-is-merge-api-used-for) - 2 comments ### [Spade](https://www.g2.com/products/spade-spade/reviews) Spade helps the largest banks and fintechs in the US & Canada, including Citizens, PayPal, FIS, Sardine, and Mercury, win more of their customers' everyday spend, make smarter decisions on every transaction in real time, and turn the transaction data they own into new revenue and AI. With Spade, every transaction is matched against a verified database covering 99.9% of businesses in the U.S. and Canada: a lookup, not a guess. We append the real merchant, exact location, brand, category, and more in under 40ms at over 99% accuracy, across card, ACH, and transfers. As a result, leading fintechs and banks like Stripe, Bilt, Cash App, and Citizens use Spade to cut disputes by showing customers transactions they recognize, power precise rewards, lock cards to exactly what they intend, and build AI products on their own data. Here's what you get with Spade: VERIFIED MERCHANT IDENTITY ON EVERY TRANSACTION A lookup against a database covering 99.9% of U.S. and Canadian businesses, not a guess. Spade returns the real merchant, exact location, brand affiliation, category, and a persistent identifier that ties the same merchant together across card, ACH, wire, and transfers, in under 40ms at p99. FEWER DISPUTES AND SUPPORT CALLS When the cardholder sees the real merchant name and logo, recognition disputes and "what is this charge?" calls drop, including on the long-tail, local, and aggregator-routed charges (DoorDash to the actual restaurant) where confusion starts. REWARDS AND CONTROLS PRECISE ENOUGH TO CHANGE BEHAVIOR Brand-level and hyper-local rewards that land on the right merchant, and cards locked to exactly what you intend, down to the specific merchant or category. REAL-TIME DECISIONS IN THE AUTHORIZATION WINDOW Identity and decision come back in one sub-40ms response, so you approve good transactions you would have falsely declined and run spend controls inline. AI ON YOUR OWN DATA Ask your transaction stream questions in plain language, and train models on it inside a no-PII walled garden, to sharpen partnership decisions, cross-sell, and the AI products your roadmap depends on. SOC 2 Type 2 certified. **Average Rating:** 4.9/5.0 **Total Reviews:** 21 #### How Do G2 Users Rate Spade? - **Quality of Support:** 10.0/10 (Category avg: 8.6/10) - **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.6/10) - **Ease of Use:** 9.5/10 (Category avg: 8.8/10) - **Ease of Admin:** 9.0/10 (Category avg: 8.5/10) #### Who Is the Company Behind Spade? - **Seller:** [Spade Data](https://www.g2.com/sellers/spade-data) - **Year Founded:** 2021 - **HQ Location:** New York , New York - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=0db1b6061a3a1412ce716a64a34af7e62d1440c5bddd5d55f23abe7ae8bf90a1&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fspadedata%2F&secure%5Burl_type%5D=linkedin_company_website) 43 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Financial Services - **Company Size:** 48% Medium, 48% Large #### What Are Recent G2 Reviews of Spade? **["Enrichment layer we didn't have to build ourselves"](https://www.g2.com/survey_responses/spade-review-13161989)** **Rating:** 5.0/5.0 stars _— Sidharth A._ [Read full review](https://www.g2.com/survey_responses/spade-review-13161989) **["Best-in-Class Transaction Enrichment: Accurate Data, Fast API, and a True Partner Team"](https://www.g2.com/survey_responses/spade-review-13089870)** **Rating:** 5.0/5.0 stars _— Matthew H._ [Read full review](https://www.g2.com/survey_responses/spade-review-13089870) ### [Flinks](https://www.g2.com/products/flinks/reviews) Flinks is an embedded finance platform that brings together data connectivity, intelligence, and payments through powerful APIs and ready-to-use dashboards. Financial institutions, lenders, and fintechs use Flinks to onboard customers faster, make smarter decisions with financial data, and move money securely, all from one platform. Our Solutions - Flinks Connect: Give your users a fast, secure way to link their bank accounts and instantly access data from 15,000+ financial institutions across North America. - Flinks Upload: Verify bank statements and void cheques in real time to catch fraud, speed up decisions, and keep onboarding moving. - Flinks Enrich: Turn raw financial data 4,500 financial attributes covering income, spending, employment, and risk insights to make faster, more confident decisions. - Flinks Pay: Initiate account-to-account payments with Interac Request for Money and EFT, backed by built-in bank account verification. - Flinks Outbound: Launch and scale an open banking program with Flinks handling the infrastructure, partner accreditation, consent management, and ongoing support. Flinks powers 1M+ monthly connections and processes 1M+ monthly document uploads across North America, with a network of 15,000+ connected financial institutions. Visit www.flinks.com to learn more and book a product demo. **Average Rating:** 4.4/5.0 **Total Reviews:** 59 #### How Do G2 Users Rate Flinks? - **Quality of Support:** 8.4/10 (Category avg: 8.6/10) - **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.6/10) - **Ease of Use:** 9.0/10 (Category avg: 8.8/10) - **Ease of Admin:** 8.7/10 (Category avg: 8.5/10) #### Who Is the Company Behind Flinks? - **Seller:** [Flinks](https://www.g2.com/sellers/flinks) - **Year Founded:** 2016 - **HQ Location:** Montreal, Canada - **Twitter:** @FlinksData 808 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d893d1b6d0281b57a3b8b2560c347ce8f8f14a311c7a2f8b7208fbb764d453e4&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fflinkstech%2F&secure%5Burl_type%5D=linkedin_company_website) 95 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Financial Services - **Company Size:** 61% Small, 36% Medium #### What Do G2 Reviewers Say About Flinks? _AI-generated summary from verified user reviews_ ##### Pros - Users value the **seamless integration with banking accounts** provided by Flinks, enhancing financial management efficiency. ##### Cons - Users are frustrated by Flinks' **carrier limitations** , as it doesn't support various third-party financial institutions. #### What Are Recent G2 Reviews of Flinks? **["perfect solution and great service"](https://www.g2.com/survey_responses/flinks-review-9092548)** **Rating:** 5.0/5.0 stars _— melissa e._ [Read full review](https://www.g2.com/survey_responses/flinks-review-9092548) **["Flinks Experience"](https://www.g2.com/survey_responses/flinks-review-12080655)** **Rating:** 5.0/5.0 stars _— Mohammed Hareez S._ [Read full review](https://www.g2.com/survey_responses/flinks-review-12080655) #### What Are G2 Users Discussing About Flinks? - [What is Flinks used for?](https://www.g2.com/discussions/what-is-flinks-used-for) - 1 comment ### [Excel Price Feed](https://www.g2.com/products/excel-price-feed/reviews) Live financial markets data in your Excel spreadsheet. Excel Price Feed is an Add-in which includes 100+ new Excel formulas for live, historical and fundamental market data. -Markets include stocks, stock indices, stock options, mutual funds, ETFs, forex, commodities and cryptocurrencies. -Real-time data for NYSE and NASDAQ, delayed data for other exchanges (Europe, Asia, Americas and Australia). -Data is sourced from Yahoo Finance, IG Index / IG Markets, Federal Reserve Economic Data (FRED), EODHistoricalData.com & Nasdaq Data Link. -No coding required, simply add the new formulas to your existing spreadsheets and refresh for the latest data. -A comprehensive Technical Analysis Toolkit. **Average Rating:** 4.4/5.0 **Total Reviews:** 37 #### How Do G2 Users Rate Excel Price Feed? - **Quality of Support:** 8.1/10 (Category avg: 8.6/10) - **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.6/10) - **Ease of Use:** 8.6/10 (Category avg: 8.8/10) - **Ease of Admin:** 7.1/10 (Category avg: 8.5/10) #### Who Is the Company Behind Excel Price Feed? - **Seller:** [Coderun Technologies Ltd](https://www.g2.com/sellers/coderun-technologies-ltd) - **Year Founded:** 2015 - **HQ Location:** Brighton, GB - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8df8243b795106c39125cb32f2f1547e957fec64f2f8682d9de62d157539e786&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcoderun-technologies-limited%2F&secure%5Burl_type%5D=linkedin_company_website) 2 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 63% Small, 29% Medium #### What Are Recent G2 Reviews of Excel Price Feed? **["Live financial market information in Excel. It is possible with Excel Price Feed"](https://www.g2.com/survey_responses/excel-price-feed-review-7109989)** **Rating:** 5.0/5.0 stars _— Sergio A._ [Read full review](https://www.g2.com/survey_responses/excel-price-feed-review-7109989) **["Excellent software for anyone doing anything with stocks or crypto"](https://www.g2.com/survey_responses/excel-price-feed-review-7116957)** **Rating:** 5.0/5.0 stars _— january l._ [Read full review](https://www.g2.com/survey_responses/excel-price-feed-review-7116957) Spotlight Categories [Online Backup Software](https://www.g2.com/categories/online-backup) [Board Management Software](https://www.g2.com/categories/board-management) [Quality Management Systems (QMS)](https://www.g2.com/categories/quality-management-qms) [Applicant Tracking Systems (ATS)](https://www.g2.com/categories/applicant-tracking-systems-ats) [Accounts Receivable Software](https://www.g2.com/categories/accounts-receivable) Similar Categories - [AI Assistants for Financial Services](/categories/ai-assistants-for-financial-services) - [Banking as a Service (BaaS)](/categories/banking-as-a-service-baas) - [Brokerage Trading Platforms](/categories/brokerage-trading-platforms) - [Construction Loan Management](/categories/construction-loan-management) - [Core Banking](/categories/core-banking) - [Deal Sourcing](/categories/deal-sourcing) - [Debt Management](/categories/debt-management) - [Digital Banking Platforms](/categories/digital-banking-platforms) - [Digital Customer Onboarding](/categories/digital-customer-onboarding) - [Digital Mortgage Closing](/categories/digital-mortgage-closing) - [Financial Analytics](/categories/financial-analytics) - [Financial Predictive Analytics](/categories/financial-predictive-analytics) - [Financial Research](/categories/financial-research) - [Financial Risk Management](/categories/financial-risk-management) - [Financial Services CRM](/categories/financial-services-crm) [Browse Financial Data APIs Themes](/categories/financial-data-apis/themes)