You can also look up for these other topics:
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:octocat:GitHub最全的前端资源汇总仓库(包括前端学习、开发资源、求职面试等)
helloqingfengInvoices, Expenses and Tasks built with Laravel, Flutter and React
invoiceninjaOpen Source Invoicing Solution for Individuals & Businesses
crater-invoice:date: Easy!Appointments - Self Hosted Appointment Scheduler
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