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Alternatives

Products that do what finprim does

Financial primitives for TypeScript. Zero dependencies.

  1. 1
    Finmark525

    Financial modeling for startups, made easy

    2020

  2. 2ZC
  3. 3
    Sequence504

    Supercharge your money with the world’s first money router

    2024

  4. 4

    Open-source financial core for building fintech products

    2025

  5. 5FF

    finstruments is a Python library designed for modeling financial instruments. It comes with the core financial instruments, such as forwards and options, out of the box, as well as position, trade, and portfolio models. finstruments comes with the basic building blocks, making it easy to extend and build new instruments for any asset class. These building blocks also provide the functionality to serialize and deserialize to and from JSON, enabling the ability to store a serialized format in a document database. This library is ideal for quantitative researchers, traders, and developers who…

    2024 · github.com

  6. 6AO
  7. 7
    Bank.io99

    Coded fintech mobile app UI kit for iOS 16

    2022

  8. 8TC

    Hey HN, I’m sharing ts-chan, an NPM package providing Go-like concurrency primitives, including channels and select statements, for TypeScript and JavaScript, supporting Node.js, Deno, Bun, and browsers. This is something I've built to make implementing Go-style "control loops" feasible in JavaScript, but there are many possible applications. Highlights: - Features a FIFO processing Chan class and versatile Select class for concurrency control. - Supports buffered channel and channel close semantics very close to Go's. - TypeScript-first implementation. - Defines a simple "channel protocol"…

    2023 · github.com

  9. 9

    Privacy-first bulk financial validation powered by WASM

    Feb 2026 · finovasharp.com

  10. 10
    Fin.do86

    A card-to-card system for instant money transfers 💳

    2018

  11. 11JZ

    I built a cli tool that gets you started with TypeScript development with zero config. Initially created to solve my own problem but thought it might be useful for others as well. - SWC compiler - TypeScript type check support - Live reload support - .env file support - Path alias support - Typescript script runner - REPL support Please tell me I am not going down a rabbit hole.

    2022 · github.com

  12. 12DF

    Learning finance is boring, so we are making it fun with Fingo. Have also implemented a trial without signup! Please try and leave your feedback, good or bad.

    2023 · tryfingo.com

  13. 13

    Synthetic IBANs for QA, staging and fintech tests

    Jun 2026 · ibangen.com

  14. 14WA
  15. 15RR

    I wanted a safer alternative to RegExp for TypeScript that uses a linear-time engine, so I built Regolith. Why: Many CVEs happen because TypeScript libraries are vulnerable to Regular Expression Denial of Service attacks. I learned about this problem while doing undergraduate research and found that languages like Rust have built-in protection but languages like JavaScript, TypeScript, and Python do not. This library attempts to mitigate these vulnerabilities for TypeScript and JavaScript. How: Regolith uses Rust's Regex library under the hood to prevent ReDoS attacks. The Rust Regex library…

    2025 · github.com

  16. 16YF

    2022 · github.com

  17. 17FF

    finagg is a Python package and CLI that enables you to aggregate and update free financial data from a handful of high quality data sources all within your own SQL database. Here're some quick facts about it: - Implements nearly all of the BEA API, FRED API, and SEC EDGAR APIs (all of which have free and nearly unlimited data access) - Only focused on macrodata (no intraday data support) - Provides methods for transforming data from these APIs into normalized features that're readily useable for analysis, strategy development, and AI/ML - The most popular methods include getting…

    2024 · github.com

  18. 18

    One API key for IBAN, sanctions, FX, and 9 more services

    Mar 2026 · edge.bh

  19. 19GT

    TL;DR Gatehouse-TS is a zero-dependencies authorization policy library written in TypeScript, ported from Rust. It allows you to combine different access control policies to check before allowing someone to access a resource. A few weeks ago, I saw a post on HN about Gatehouse, an authorization library written in Rust. Here's the original HN thread: https://news.ycombinator.com/item?id=43466221 I looked at their GitHub page, and started reading the source code. I do this for anything posted here that catches my attention, even if it's written in a language I don't understand.…

    2025 · github.com

  20. 20

    Instant tax, loan & salary calculators

    Aug 2026 · tools.zfinpro.com

  21. 21

    Free synthetic bank statements for testing parser accuracy

    Mar 2026 · bankstatemently.com

  22. 22SG

    StarkZap is an open-source TypeScript SDK for adding Bitcoin-backed asset transfers, balances, lending & borrowing and staking to web, mobile, or server apps. The goal is to let developers integrate programmable Bitcoin assets without requiring users to install wallets, manage seed phrases, or hold gas tokens. Under the hood it runs on Starknet and supports WBTC, tBTC, LBTC, SolvBTC, and other Bitcoin-backed ERC20 tokens. ```import { StarkZap, StarkSigner, Amount, fromAddress, getPresets } from "starkzap"; const sdk = new StarkZap({ network: "sepolia" }); const wallet = await…

    Feb 2026 · github.com

  23. 23
    Finsiq3

    Private, serverless financial calculators, for Indian money.

    Jul 2026 · finsiq.localhostdeveloper.com

  24. 24ZD

    Hey HN! We just released a new library for building LLM-powered applications: @axflow/models. It is part of a larger suite of libraries we're developing for TypeScript developers working with generative AI. This library provides the simplest APIs for 1) invoking the most popular LLM and embedding models (openai, anthropic, cohere, huggingface, etc.) 2) streaming LLM responses to clients, including augmenting the streams with additional arbitrary data and 3) building client-side applications with React hooks. @axflow/models has zero dependencies and is built using only the…

    2023 · docs.axflow.dev

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