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Instead of Kotlin/JS

Kotlin/JS alternatives

Kotlin/JS compiles Kotlin code, the Kotlin standard library, and compatible dependencies into JavaScript for browser or Node.js targets. It supports ES5, ES2015, and ES2020 output, several JavaScript module systems, npm dependencies through the Kotlin Multiplatform Gradle plugin, and automatic source maps. Teams can share logic between web frontends and JVM, Android, or iOS clients, use Kotlin wrappers for React libraries, and access Node.js APIs with type safety. Browser testing can use Karma or an experimental DSL, while Node.js projects use Mocha.

  1. 1

    Ramp AP

    by Ramp AP
    Free plan AndroidAPIExtension+2

    Teams needing AP automation across web, mobile, API, and extension — Ramp AP automates invoice capture, approvals, PO matching, payments, and multi-entity work instead of compiling Kotlin to JavaScript.

    Free plan · paid from $15/user/mo · 30-day trial Visit site
  2. 2

    OpenEnvoy

    by OpenEnvoy
    Free plan Web

    Small teams wanting a free web-based AP platform — OpenEnvoy provides AI invoice capture, approvals, PO matching, payments, and three accounting integrations rather than Kotlin compilation.

    7.2 Free plan Visit site
  3. 3

    Ottimate

    by Ottimate
    Paid AndroidAPIiPhone+1

    AP leaders needing invoice lifecycle automation and spend insights — Ottimate automates invoice capture, coding, approvals, payments, matching, and spend analysis, while Kotlin/JS targets JavaScript application development.

    5.9 Pricing on request Visit site
  4. 4

    Nanonets Accounts Payable Automation

    by Nanonets Accounts Payable Automation
    Free plan APISelf-hostedWeb

    Organizations seeking AI AP automation with API access — Nanonets offers AI invoice capture, approvals, and PO matching through API and web, but no payment execution or Kotlin tooling.

    7.4 Free plan · paid from $100/mo Visit site
  5. 5

    Flowie

    by Flowie
    Free plan APISelf-hostedWeb

    Finance teams coordinating document-driven procurement workflows — Flowie uses AI agents to read documents, route work, and execute actions across connected systems instead of producing JavaScript.

    7.4 Free plan · paid from €0.33 · 30-day trial Visit site
  6. 6

    Melio

    Free plan AndroidiPhoneWeb

    Businesses automating bills through accounting synchronization — Melio automates AP from bill capture through accounting synchronization and executes payments, unlike Kotlin/JS’s programming workflow.

    7.2 Free plan · paid from $25/mo · 90-day trial Visit site
  7. 7

    Tradeshift

    by Tradeshift
    Free plan APIWeb

    Enterprises needing AP, e-invoicing, and procure-to-pay modules — Tradeshift combines AP, e-invoicing, compliance, clearance, procurement, configurable AI, and enterprise connectors rather than compiling Kotlin.

    7.1 Pricing on request Visit site
  8. 8

    OpenText Vendor Invoice Management for SAP Solutions

    by OpenText Vendor Invoice Management for SAP Solutions
    Free plan APILinuxSelf-hosted+2
    7.3 Pricing on request Visit site
  9. 9

    Relay Bill Pay

    Free plan AndroidiPhoneWeb
    7.2 Free plan · paid from $30/mo · 14-day trial Visit site
  10. 10

    Rossum AP Automation

    by Rossum AP Automation
    Free plan APIWeb
    7.1 From $18,000/yr · 14-day trial Visit site
  11. 11

    Rho

    by Rho
    Free plan AndroidAPIiPhone+1
    7.1 Free plan Visit site
  12. 12

    Veryfi Accounts Payable Automation

    by Veryfi Accounts Payable Automation
    Free plan AndroidAPIiPhone+1
    7.1 Free plan · paid from $500/mo · 14-day trial Visit site
  13. 13

    Docsumo Accounts Payable

    by Docsumo Accounts Payable
    Free plan APIWeb
    7.0 Pricing on request · 14-day trial Visit site
  14. 14

    Billacle

    Free plan Web
    6.9 From ₹10,000/mo · 7-day trial Visit site
  15. 15

    Easy Invoice Manager

    Free plan Web
    6.8 Free plan · paid from $15/user/mo Visit site
  16. 16

    Payouts.com

    by Payouts.com
    Free plan APIWeb
    6.7 Free plan · pricing on request Visit site
  17. 17

    BILL Accounts Payable

    by BILL Accounts Payable
    Free trial AndroidAPIiPhone+1
    6.6 From $49/user/mo Visit site
  18. 18

    ApprovalMax

    by ApprovalMax
    Free trial AndroidAPIiPhone+1
    6.4 Pricing on request · 14-day trial Visit site
  19. 19

    Lightyear

    by Lightyear
    Free trial AndroidAPIiPhone+1
    6.4 From $199/mo · 30-day trial Visit site
  20. 20

    Zahara

    by Zahara
    Free trial AndroidAPIiPhone+1
    6.4 From £159/mo · 14-day trial Visit site
  21. 21

    SutiAP

    by SutiAP
    Free trial AndroidAPIiPhone+1
    6.2 Pricing on request Visit site
  22. 22

    Tungsten AP Essentials

    Free trial APIWeb
    6.1 Pricing on request · 60-day trial Visit site
  23. 23

    Esker Accounts Payable Automation

    by Esker Accounts Payable Automation
    Paid AndroidAPIiPhone+1
    6.0 Pricing on request Visit site
  24. 24

    SAP Concur Invoice

    Paid AndroidiPhoneWeb
    5.9 Pricing on request Visit site
  25. 25

    Stampli

    by Stampli
    Paid AndroidiPhoneWeb
    5.9 Pricing on request Visit site

Readers may look elsewhere when they need accounts-payable automation rather than a programming compiler. Kotlin/JS is free and runs on Linux, macOS, Windows, and the web, but Karma is deprecated and the newer browser testing DSL is experimental. The alternatives below concentrate on invoice capture, approvals, purchase-order matching, payments, procurement, and finance operations. Weigh whether you need Kotlin and Java source-to-source workflows, API documentation outputs, shared application logic, and Gradle configuration, or instead need a finance platform available through web, mobile, API, extension, or self-hosted access. These products address different work from Kotlin/JS.

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