オープンソース製品とリポジトリ

すべてCOSS（商用OSS）MIT / Apacheセルフホスト可MCP & Agent

期間全期間カテゴリ税務・確定申告ライセンス詳細クリア並び順GitHubスター数19 プロジェクト

税務・確定申告商用競合製品 →市場トレンド →LP＆デザインスタイル →

オープンソースプロジェクト · GitHubスター数

プロジェクト	概要	ライセンス＆技術	Stars	月間訪問	商用状況	操作
vvatlayerCOSSpublic-apis/public-apisFree, Instant VAT Number Validation & EU VAT Rates API	Free, Instant VAT Number Validation & EU VAT Rates API	MIT·Go	58.9K	<5K	$10/月
TTax VAT Pointjs-cookie/js-cookieExplore comprehensive resources on our website to empower your Tax and VAT decisions.	Explore comprehensive resources on our website to empower your Tax and VAT decisions.	MIT·JavaScript	622	11.3K	—
NNotaxovertimecalculatorjs-cookie/js-cookiePaying federal taxes is part of earning income, but paying more than necessary is not.	Paying federal taxes is part of earning income, but paying more than necessary is not.	MIT·JavaScript	622	<5K	—
ccryptactMCPpafin-inc/cryptact-cliAutomated crypto tax reports and portfolio tracking	Automated crypto tax reports and portfolio tracking	MIT·JavaScript	3	191.2K	$2/月
JJamku Portalmadrecha/portalAutomated tax litigation management for Income Tax, GST and TDS.	Automated tax litigation management for Income Tax, GST and TDS.	—	2	9.6K	—
VVatstackCOSSvatstack/openapiSimplify VAT & GST for your digital business	Simplify VAT & GST for your digital business	—	GitHub	5.1K	$15/月
TTax Atlasmynameiskalam/taxatlasIncome tax math for the US, UK, India, Canada & Australia.	Income tax math for the US, UK, India, Canada & Australia.	—	GitHub	<5K	—
ddTaxCOSSdTaxLab/dtaxCrypto Tax Clarity	Crypto Tax Clarity	Go	GitHub	<5K	$42/月
PProfitHelmCOSScoskunarif/profithelm-platformPrecision Tax Models & Capital Horizons for the 2026-2027 TCJA Sunset	Precision Tax Models & Capital Horizons for the 2026-2027 TCJA Sunset	—	GitHub	<5K	$49/月
MMyTaxCalculatorsandylextest01/mytaxcalculatorsTax Intelligence for Salaries, Contractors & Global Nomads	Tax Intelligence for Salaries, Contractors & Global Nomads	—	GitHub	<5K	—
HHarvestx3labs/harvest-artTax Loss Harvesting for NFTs & Tokens	Tax Loss Harvesting for NFTs & Tokens	—	GitHub	<5K	—
VVatifyCOSSvatifytax/vatify-pythonEU VAT API for Developers	EU VAT API for Developers	MIT·Python	GitHub	<5K	$10/月
VVatnodeMCPvatnode/eu-vat-rates-datavatnode – VIES API for EU VAT Validation with Consultation Numbers	vatnode – VIES API for EU VAT Validation with Consultation Numbers	—	GitHub	<5K	$17/月
VVATRateCOSSdavideponti/vatrateKnow your VAT. Ship globally.	Know your VAT. Ship globally.	—	GitHub	<5K	$21/月
mmultichain-tax-mcpMCPwkalidev/multichain-tax-mcpCrypto tax reporting inside your AI assistant	Crypto tax reporting inside your AI assistant	—	GitHub	<5K	$19/月
CCryptoTaxEdgeMCPsturs49/cryptotaxedge-mcpCrypto tax classification you can file on.	Crypto tax classification you can file on.	—	GitHub	<5K	$199/月
IITR-TaxPilotthakuratul2/ITR-TaxPilotThe Autonomous, DeterministicForm 16 Tax Co-Pilot	The Autonomous, DeterministicForm 16 Tax Co-Pilot	—	GitHub	<5K	—
AAyayay Impuestosluanlucho/ayayay-impuestosConsulta gratis tu impuesto a la renta del 2024 en Ecuador	Consulta gratis tu impuesto a la renta del 2024 en Ecuador	—	GitHub	<5K	—
1183Trackerrouralberto/nomad183tracker183Tracker - Track your international stays and monitor tax residency thresholds	183Tracker - Track your international stays and monitor tax residency thresholds	—	GitHub	<5K	—