Showing 230 open source projects for "invoice"

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    SIEM | API Security | Log Management Software

    AI-Powered Security and IT Operations Without Compromise.

    Built on the Graylog Platform, Graylog Security is the industry’s best-of-breed threat detection, investigation, and response (TDIR) solution. It simplifies analysts’ day-to-day cybersecurity activities with an unmatched workflow and user experience while simultaneously providing short- and long-term budget flexibility in the form of low total cost of ownership (TCO) that CISOs covet. With Graylog Security, security analysts can:
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  • Lightspeed golf course management software Icon
    Lightspeed golf course management software

    Lightspeed Golf is all-in-one golf course management software to help courses simplify operations, drive revenue and deliver amazing golf experiences.

    From tee sheet management, point of sale and payment processing to marketing, automation, reporting and more—Lightspeed is built for the pro shop, restaurant, back office, beverage cart and beyond.
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  • 1
    Invoice Ninja

    Invoice Ninja

    Free and Open Source Invoicing, Expenses & Time-Tracking

    Invoice Ninja is a free and open source invoicing, expenses and time-tracking app built with Laravel and Flutter. It offers a plethora of great features, including custom branded invoice design, recurring invoicing and auto-bill clients, real-time quote creation and custom proposals, expense reporting and so much more! Invoice Ninja is also capable of handling online payments from more than 40 payment gateways, including Stripe, PayPal and WePay.
    Downloads: 12 This Week
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  • 2
    Invoice Plane

    Invoice Plane

    A self-hosted open source application for managing your invoices

    InvoicePlane is an open-source invoicing and client management system designed for small businesses and freelancers. It enables users to create, send, and manage invoices and quotes efficiently. The system supports multiple languages, currencies, and tax rates, making it suitable for global use. InvoicePlane also provides detailed financial reporting and client management features.
    Downloads: 6 This Week
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  • 3
    Frappe Books

    Frappe Books

    Free Desktop book-keeping software for small-businesses & freelancers

    ...It's made to work offline using a local SQLite file as the database, so you don't have to be dependent on a Cloud service provider. Frappe Books features a clean and modern, web-friendly UI, beautiful invoice templates, standard financial reports and other great features. It's inherently portable and secure, as your data is never uploaded into the Cloud.
    Downloads: 21 This Week
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  • 4
    Pejota

    Pejota

    The ERP and CRM, multi language, for freelancers

    PeJota is a Freelancer/solo entrepreneur‑focused ERP/CRM built on PHP/Laravel with FilamentPHP UI. It includes client/project/contracts/tasks/timesheets and invoice management in a lightweight monolithic app, ideal for multilingual SMB use.
    Downloads: 1 This Week
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  • Collect! is a highly configurable debt collection software Icon
    Collect! is a highly configurable debt collection software

    Everything that matters to debt collection, all in one solution.

    The flexible & scalable debt collection software built to automate your workflow. From startup to enterprise, we have the solution for you.
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  • 5
    Kimai

    Kimai

    Kimai is a web-based multi-user time-tracking application

    Kimai is an open-source time-tracking solution. It tracks work time and prints out a summary of your activities on demand. Yearly, monthly, daily, by the customer, by the project. Its simplicity is its strength. Due to Kimai’s browser-based interface, it runs cross-platform, even on your mobile device. With Kimai, the boring process of feeding Excel spreadsheets with your working hours is not only simplified, it also offers dozens of other exciting features that you don't even know you're...
    Downloads: 1 This Week
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  • 6
    WP Project Manager

    WP Project Manager

    The Project Management plugin for WordPress

    WP Project Manager is a WordPress-based project management plugin that offers tasks, to‑do lists, milestones, Kanban boards, time tracking, Gantt charts, and integrations. It's suitable for teams working within WordPress wanting self-hosted task management closely integrated with their site CMS.
    Downloads: 12 This Week
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  • 7
    Τιμολόγιο ΕΔ

    Τιμολόγιο ΕΔ

    Τιμολόγιο δαπάνης Ενόπλων Δυνάμεων

    Υπολογίζει τα στοιχεία ενός τιμολογίου δαπάνης Ενόπλων Δυνάμεων με βάση τα δεδομένα που είναι το ποσό (καθαρής αξίας, πληρωτέου ή καταλογιστέου) καθώς και τα ποσοστά ΦΠΑ, ΦΕ και κρατήσεων. Για κάποιον που δεν είναι εξοικειωμένος με τα ποσοστά ΦΕ και κρατήσεων, υπάρχει οδηγός που τα ρυθμίζει αυτόματα, με βάση κάποιες απλές ερωτήσεις.
    Downloads: 1 This Week
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  • 8
    Kaneo

    Kaneo

    An open source project management platform

    Kaneo is a lightweight invoicing and client management tool for freelancers and small businesses. Built as a modern, self-hosted solution, Kaneo helps users generate invoices, track payments, and manage clients from a user-friendly dashboard. It's especially useful for independent workers who prefer local control over SaaS options.
    Downloads: 4 This Week
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  • 9
    AdminLTE

    AdminLTE

    Free admin dashboard template based on Bootstrap 4

    ...Built on top of Bootstrap, AdminLTE provides a range of responsive, reusable, and commonly used components. Mobile first design. Fits many resolutions, from large desktops to small mobile devices. Support for printing any page. The invoice page makes a perfect example. Choose a skin that matches your branding or edit the LESS variables to create your own.
    Downloads: 176 This Week
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  • Leverage AI to Automate Medical Coding Icon
    Leverage AI to Automate Medical Coding

    Medical Coding Solution

    As a healthcare provider, you should be paid promptly for the services you provide to patients. Slow, inefficient, and error-prone manual coding keeps you from the financial peace you deserve. XpertDox’s autonomous coding solution accelerates the revenue cycle so you can focus on providing great healthcare.
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  • 10
    Stripe.net

    Stripe.net

    Stripe.net is a sync/async .NET 4.6.1+ client

    A .NET library to facilitate Stripe payment integration, supporting a full range of payment and subscription features for .NET applications.
    Downloads: 0 This Week
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  • 11
    Laravel Cashier

    Laravel Cashier

    Laravel Cashier provides an expressive, fluent interface to Stripe

    ...In addition to basic subscription management, Cashier can handle coupons, swapping subscriptions, subscription "quantities", cancellation grace periods, and even generate invoice PDFs.
    Downloads: 0 This Week
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  • 12
    InvoicePrinter

    InvoicePrinter

    Super simple PDF invoicing

    Super simple PDF invoicing. InvoicePrinter is a server, command line program and pure Ruby library to generate PDF invoices in no time. You can use Ruby or JSON as the invoice representation to build the final PDF.
    Downloads: 0 This Week
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  • 13

    efactuur-pdf-nl

    PDF generation for Dutch UBL and SETU invoices

    The EfactuurNL2PDF project provides the following functionality: - PDF generation for UBL or SETU Invoice documents. - Schematron validation stylesheets - Genericode validation stylesheets The following HR-XML-NL and UBL-NL message versions are currently supported in this project : - NLCIUS (si-ubl-2.0.1) - UBL Invoice 1.9 - UBL Invoice 1.8 - UBL Invoice 1.7 - UBL Invoice 1.6.3 - UBL Invoice 1.6.2 - UBL Invoice 1.1 - SETU Invoice 2.0 - SETU Invoice 1.8.1 - SETU Invoice 1.7 - SETU Invoice 1.6.4 - SETU Invoice 1.1
    Downloads: 0 This Week
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  • 14
    QuestPDF

    QuestPDF

    A library that can help you with generating PDF documents

    ...QuestPDF is a progressive library that can help you with generating PDF documents in your .NET application by offering a friendly, discoverable and predictable C# fluent API. Do you believe that creating a complete invoice document can take less than 200 lines of code? We have prepared for you a step-by-step instruction that shows every detail of this implementation and describes the best patterns and practices. This library is created specifically for designing and arranging document layouts, with full paging support. Alternative solutions, such as HTML-based converters, are not designed for this purpose and therefore are often unpredictable and do not produce desired results.
    Downloads: 2 This Week
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  • 15
    Lago

    Lago

    Open Source Metering and Usage Based Billing API

    Lago offers a self-hosted and cloud, scalable and modular architecture for metering and usage-based billing, at every stage of your company. Ingest up to 15,000 billing events per second. Lago’s event-based architecture provides a solid foundation for building a fair pricing model that scales with your business. Lago supports all pricing models. Create pay-as-you-go and hybrid plans in no time with our intuitive user interface or API. Create engaging marketing campaigns and increase...
    Downloads: 0 This Week
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  • 16
    Node.js Telegram Bot API

    Node.js Telegram Bot API

    Telegram Bot API for NodeJS

    ...Depending on the properties of the Message, one of these events may ALSO be emitted, text, audio, document, photo, sticker, video, voice, contact, location, new_chat_members, left_chat_member, new_chat_title, new_chat_photo, delete_chat_photo, group_chat_created, game, pinned_message, poll, dice, migrate_from_chat_id, migrate_to_chat_id, channel_chat_created, supergroup_chat_created, successful_payment, invoice, video_note, etc. Its much better to listen a specific event rather than on message in order to stay safe from the content. Bot must be enabled on inline mode for receive some messages.T elegram only supports HTTPS connections to WebHooks. Therefore, in order to set a WebHook, you will need a SSL certificate. The library makes it easy to get started sending files. ...
    Downloads: 0 This Week
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  • 17

    Accounting lite

    An accounting program (not released) and a released invoice program.

    Downloads: 0 This Week
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  • 18
    Invoicr - PHP Invoice Generator

    Invoicr - PHP Invoice Generator

    PHP invoice generator that creates HTML, PDF, DOCX, and PNG invoices.

    Invoicr is a free and open-source PHP invoice generator that is capable of churning out HTML, PDF, DOCX, and PNG invoices. It is a simple fuss-free package that will give developers a quick boost with their invoice generation needs. ## "INSTALLATION" & REQUIREMENTS There is no “installation”, only a small hassle: 1) Edit invlib/invoicr.php, change (C1) company information to your own. 2) That's all.
    Downloads: 0 This Week
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  • 19
    Apache OpenOffice Templates

    Apache OpenOffice Templates

    Thousands of ready to use Apache OpenOffice templates

    The official catalog of Apache OpenOffice templates. You'll find templates ranging from letters and résumés to calendars and brochures. Templates can save your time, and are easy to use.
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    Downloads: 7,087 This Week
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  • 20

    SalesOrders

    Creates Invoice & Quotation for Customers

    This is a customized software specifically developed for small businesses (for B2B). This is useful to generate Invoices/Quotations for customers on a weekly/daily basis. It uses Microsoft excel to use as Master database and creates invoices in excel workbook.
    Downloads: 0 This Week
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  • 21
    Aronium Free Windows Point of Sale

    Aronium Free Windows Point of Sale

    Easy to use, modern and reliable POS solution.

    Speed From setup to selling in a minutes. With modern and simple interface you will be up and running in no-time. Discounts & promotions Keep your loyal customers. With our loyalty module, you can schedule promotions and automatically apply discounts to selected items. Support Have a question? We are here to help. Jump directly to our help center, or drop us a line, send suggestion, or just say Hi! Help is just an email away! Made for Windows Turn your PC into a functional...
    Downloads: 132 This Week
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  • 22
    Free Invoicing Software for 2025

    Free Invoicing Software for 2025

    Simple Invoicing program for Desktop written in vba and Access

    ...Read the readme file, and manual for greatest use of this App. This is an upgrade to MSFrnd2a. The application can now produce a Revenue Graph, you can add Inventory on the Invoice, and print mail labels. The MS-Access Runtimes for 32/64 bits are included. The ZIP file contains all program code, and program elements needed to work on. Find other free programs at: https://gotomarcus.com/main/marcus/index.php or gotomarcus.com/currentswms/index.php
    Downloads: 13 This Week
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  • 23

    Dolibarr timesheet

    Timesheet module for dolibarr

    Module to enable a Timesheet view for project in Dolibarr Dolibarr on Sourceforge : https://sourceforge.net/projects/dolibarr/
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    Downloads: 2 This Week
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  • 24
    Group Office groupware and CRM

    Group Office groupware and CRM

    Take your office and CRM into the cloud!

    ...Share projects, calendars, files and e-mail online. It is a complete solution for all your online office needs. From a customer phone call to a project and finally an invoice. The support system helps to keep your customers happy. Group Office is fast, secure and has privacy by design. You can stay in full control of your data by self hosting your cloud and e-mail. Our document editing solution keeps all data on the secured server instead of synchronising it to all user devices. GroupOffice is open source and modular. ...
    Downloads: 78 This Week
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  • 25
    Vali Admin

    Vali Admin

    Free Bootstrap 4 admin/dashboard template

    Vali is a free, modular and easy-to-customize admin theme built using Bootstrap 4, SASS and Pug.js. Includes seven pre-built pages including login, user profile, and print-friendly invoice page. Run a npm install command in the project root directory to install and build dependencies. If you don't want to edit the theme you can use the compiled files inside the docs folder. Use npm run dev command to watch and compile source files. Use npm run build command to compile all source files. Use npm run start command to start a development server using NodeJs. ...
    Downloads: 0 This Week
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