Dev tools · alternatives · 2026

24 alternatives to Unbill API

Pay bills automatically via an API.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Unbill API launched in 2016; newer entries below may have overtaken it.

1. 1
   Easybilling▲91

   AI-native billing & payments for usage-based AI products

   Jun 2026 · its alternatives →

2. 2
   JustPaid▲272

   Autonomous AI for billing, contracts, and collections.

   2025 · its alternatives →

3. 3
   BillSplit▲331

   Split bills with colleagues on Slack

   2023 · billsplit.app · its alternatives →

4. 4
   BillSlice▲84

   Streamline shared bills

   2023 · its alternatives →

5. 5
   Billfy▲156

   Automate your freelance billing

   2024 · billfy.co · its alternatives →

6. 6
   Billbot▲179

   Track your subscriptions & recurring expenses with ease

   2020 · billbot.app · its alternatives →

7. 7
   BillBuddy▲71

   Automated Invoice Processing

   2017 · billbuddy.io · its alternatives →

8. 8
   OneBill▲79

   End-to-end recurring billing & revenue management platform

   2021 · onebillsoftware.com · its alternatives →

9. 9
   Unpayd▲139

   Automated invoice collections for small businesses 💰

   2018 · linktr.ee · its alternatives →

10. 10
    ChargeOver▲75

    Automate your recurring billing and payment collection

    2014 · chargeover.com · its alternatives →

11. 11
    Roger▲98

    Automate your company's expenses

    2019 · corpayone.com · its alternatives →

12. 12
    Waivr API▲191

    Smart recurring payments

    2023 · aspirio.co · its alternatives →

13. 13
    Bold▲83

    Automatically pay your contractors, suppliers, and partners

    2015 · its alternatives →

14. 14
    Heybill - Automatically Fetch Your Invoices From The Command Line▲17

    Heybill lets you automatically fetch your bills/invoices from the command line. - plehoux/heybill

    2013 · github.com · its alternatives →

15. 15
    Credyt▲100

    Hey HN! I'm the founder of Credyt (https://credyt.ai). If you're running an AI product that burns $0.50+ per interaction, you need to bill customers as usage happens, not at the end of the month. Otherwise you're a bank for your customers, and you'll run out of money before they do. Why invoice-based billing doesn't work for AI: Most usage-based billing tools (Stripe Billing, Orb, etc.) were built for SaaS. They meter usage all month, then send an invoice. That works fine when your COGS is 5%. It's a disaster when you're paying your AI vendor upfront for every request and your…

    Nov 2025 · credyt.ai · its alternatives →

16. 16
    Recurly▲92

    Subscription Billing Automation

    2014 · recurly.com · its alternatives →

17. 17BP
    Bitbillpay - Pay any PostBillPay biller in Australia with Bitcoin▲80

    2013 · bitbillpay.com.au · its alternatives →

18. 18
    BillGO App▲77

    The best way to pay and manage all your bills in an app

    2016 · billgo.com · its alternatives →

19. 19
    Billiant▲75

    Track bills & save money

    2019 · billiant.app · its alternatives →

20. 20
    Easybill - Invoices in Seconds▲7

    AI Accouting for freelancers and entrepreneurs

    2025 · bubble.io · its alternatives →

21. 21TC
    The code free way to use Stripe▲24

    2012 · easybill.co · its alternatives →

22. 22
    BillBuddy – Automated Invoice Processing▲39

    Made with Softr, the easiest way to turn your data into internal tools and client portals. No coding required.

    2017 · billbuddy.io · its alternatives →

23. 23
    XooBill▲7

    Everything you need to manage billing in one place.

    Dec 2025 · xoobill.com · its alternatives →

24. 24
    The Bill▲14

    AI-powered expense-splitting app

    2025 · thebill.dev · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →