Finance & Accounting·Standings
Unified API Tools Compared
Unified API tools connect one product to services from multiple providers; your choice turns on the platforms you need and the price you can support.
Compare the board’s free plans and starting prices alongside provider coverage, API style, webhooks, data normalization, sandbox environments, OAuth and SDK languages. Marks show whether a tool has an API, open-source code or a free tier.
- 28 platforms
- 11 with a free tier
- Checked 7 Oct 2026
- 1 N
Nangonango.devAn open-source integration service offers API connections on the web or self-hosted.
- 2 K
Knitgetknit.devAn integration service connects apps through web, mobile, and API access.
- 3 M
MXmx.comA financial data platform lets people view connected accounts in one place and gives providers data visibility.
- 4 TDTrueLayer Data APItruelayer.com
- 5 MMonomono.co
Mono provides businesses with financial data, identity verification, and direct bank payment services through open banking.
- 6 M
Mergemerge.devMerge provides a connectivity platform for products and workforces, including customer-facing integrations, agent tools, and LLM routing.
- 7 PPipedreampipedream.com
An integration service connects apps using JavaScript, Python, or no-code workflow building.
- 8 R
Rutterrutter.comAn integration service lets B2B software read, change, add, or remove data across platforms.
- 9 A
API2Cartapi2cart.comA connection service links software to more than 80 shopping platforms and marketplaces.
- 10 T
Tinktink.comOpen banking API for European financial data, payments, onboarding, and affordability checks.
- 11 P
Plaidplaid.comA financial connection service links apps to accounts at more than 12,000 institutions.
- 12 TATruto Accounting APItruto.one
Accounting API reading and writing real-time data across 11 integrations with 25 unified resources.
- 13 NS
Nylas Schedulernylas.comA scheduling service offers booking pages, calendar syncing, group bookings, and reminders.
- 14 LTLean Technologiesleantech.me
A financial platform supports account checks, bank payments, financial data, and payouts.
- 15 A
Akoyaakoya.comA financial data service lets people share account, investment, and payment details through API connections.
- 16 A
Apideckapideck.comAn integration service connects SaaS products to over 200 apps across several business categories.
- 17 UT
Unified.to Accounting APIunified.toAccounting API providing live standardized accounts, bills, invoices, transactions, and reports across platforms.
- 18 USUnipile Social Media APIunipile.com
An API for LinkedIn, Instagram, WhatsApp, Messenger, and Telegram social media features.
- 19 GGr4vygr4vy.com
A cloud service connects payment and fraud providers, with rules for routing and checkout.
- 20 SSpreedlyspreedly.com
Payment API and vault that stores tokenized methods for use with multiple gateways and endpoints.
- 21 PPrimerprimer.io
A payments service provides checkout, payment routing, and tools to monitor and manage payments.
- 22 C
Codatcodat.ioA financial data service gives banks ERP information and insights about spending and payment timing.
- 23 SESalt Edge Payment Initiationsaltedge.com
Open banking API for account-to-account payments from 2,700+ European and UK banks, processed in seconds.
- 24 YDYapily Datayapily.com
Open Banking API providing consented, standardized account, balance, transaction, and identity data.
- 25 BBindbeeBindbee Inc.
An integration service connects HR, payroll, hiring, and benefits systems.
Places #1, #2, #3, #4, #5 on this board are open to sponsors. Take #1 · Other ways to advertise
How to choose
Which platforms does it need to run on?
Check which access types your product depends on, from web and API to iOS, Android, self-hosting or a browser extension.
Check the platform field for a tool before comparing its other features. A service may support an API and web access without offering a mobile app or self-hosted option.
What will the unified API cost?
Pricing varies: API2Cart lists $300 per month with a 14-day trial, Apideck $599 per month with a 30-day trial, FinFeedAPI $64 per month, and Merge a free plan plus paid service from $650 per month. Akoya lists pricing on request.
Which providers and connection features do I need?
Check the connected-provider list and API style against the services you already use.
Webhooks can send event updates, while data normalization puts information from different providers into a common format. Confirm both before switching integrations.
Does it support secure testing and sign-in?
For isolated testing or sign-in via an external service, see whether the tool offers a sandbox and OAuth support.
Compare SDK languages as well, so your team can use the programming language it already supports.
Can I use or change its source code?
If inspecting or modifying source matters, review the open-source indicator and licence before you decide.
A free plan or free trial affects access to the service, not permission to modify its source code.
Questions
What is a unified API?
It is an API that gives one connection to services from multiple providers, with options such as webhooks and normalized data.
Which unified APIs have a free plan?
Use the board's Free plan mark. Merge is listed with a free plan; Akoya also shows a free plan.
How much does a unified API cost?
Listed prices range from FinFeedAPI at $64 per month to Merge at $650 per month for paid service. API2Cart starts at $300 and Apideck at $599; some makers request a quote.
Do unified APIs support OAuth?
OAuth support is a comparison field on the board. Check the individual tool's mark before choosing it for sign-in connections.
Is self-hosting available for unified APIs?
Self-hosted is one of the platform fields. Review the platform details of the tool on your shortlist.
Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure