Showing 105 open source projects for "open source invoice"

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    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

    Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
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  • 1
    NocoDB

    NocoDB

    Open Source Airtable Alternative

    NocoDB is an open source #NoCode platform that turns any database into a smart spreadsheet. It is free & self-hostable. Let your imagination be thy limit. Create unlimited grid view, gallery view, form view from your own data. Search, sort, filter columns and rows with ultra ease. Collaborate just like spreadsheets. Invite your team with fine-grained Access Control.
    Downloads: 32 This Week
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  • 2
    PhpSpreadsheet

    PhpSpreadsheet

    A pure PHP library for reading and writing spreadsheet files

    PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc. PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc. Support for PHP versions will only be maintained for a period of six months beyond the end of life of that PHP version. Use composer to...
    Downloads: 50 This Week
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  • 3
    Quadratic

    Quadratic

    Data science spreadsheet with Python & SQL

    ...Bring the latest open-source tools directly to your spreadsheet. Quickly write code and see the output in full detail. No more squinting into a tiny terminal to see your data output.
    Downloads: 7 This Week
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  • 4
    CryptPad
    CryptPad is an open-source, end-to-end encrypted collaborative office suite developed by XWiki SAS. It offers a privacy-focused alternative to mainstream cloud-based productivity tools, enabling users to create, edit, and share documents securely without compromising data privacy. All content is encrypted client-side, ensuring that only authorized users can access the information.
    Downloads: 6 This Week
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  • Inventors: Validate Your Idea, Protect It and Gain Market Advantages Icon
    Inventors: Validate Your Idea, Protect It and Gain Market Advantages

    SenseIP is ideal for individual inventors, startups, and businesses

    senseIP is an AI innovation platform for inventors, automating any aspect of IP from the moment you have an idea. You can have it researched for uniqueness and protected; quickly and effortlessly, without expensive attorneys. Built for business success while securing your competitive edge.
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  • 5
    IronCalc

    IronCalc

    Main engine of the IronCalc ecosystem

    IronCalc is a new, modern, work-in-progress spreadsheet engine and set of tools to work with spreadsheets in diverse settings. IronCalc is a lightweight, open-source computational engine designed for performing mathematical operations, formula calculations, and data-driven tasks.
    Downloads: 3 This Week
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  • 6
    VisiData

    VisiData

    A terminal spreadsheet multitool for discovering and arranging data

    ...Code in the stable branch of this repository, including the main vd application, loaders, and plugins, is available for use and redistribution under GPLv3. VisiData is a free, open-source tool that lets you quickly open, explore, summarize, and analyze datasets in your computer’s terminal. VisiData works with CSV files, Excel spreadsheets, SQL databases, and many other data sources.
    Downloads: 3 This Week
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  • 7
    ImportExcel

    ImportExcel

    PowerShell module to import/export Excel spreadsheets, without Excel

    ImportExcel is a popular PowerShell module that enables reading, writing, and manipulating Excel spreadsheets without requiring Microsoft Excel to be installed on the host. It exposes straightforward cmdlets like Import-Excel and Export-Excel that convert between Excel sheets and PowerShell objects, making it simple to pipeline tabular data into reporting and automation flows. Advanced features include adding and formatting tables, setting number/date formats, creating charts, and applying...
    Downloads: 3 This Week
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  • 8
    Jspreadsheet CE

    Jspreadsheet CE

    Javascript plugin to create web-based tables & spreadsheets

    Jspreadsheet CE is a lightweight Vanilla JavaScript data grid plugin to create amazing web-based interactive HTML tables, and spreadsheets compatible data grid with other spreadsheet software. You can create an online spreadsheet table from a JS array, JSON, CSV or XSLX files. You can copy from excel and paste straight to your Jspreadsheet CE spreadsheet and vice versa. It is very easy to integrate any third party JavaScript plugins to create your own custom columns, custom editors, and...
    Downloads: 2 This Week
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  • 9
    stylex-jsx

    stylex-jsx

    Full CSS support for JSX without compromises

    Full, scoped and component-friendly CSS support for JSX (rendered on the server or the client). Code and docs are for v3 which we highly recommend you to try. Looking for styled-jsx v2? Switch to the v2 branch. Blazing fast and optimized CSS rules injection system based on the CSSOM APIs. Full CSS support, no tradeoffs in power. Runtime size of just 3kb (gzipped, from 12kb). Complete isolation: Selectors, animations, keyframes. Built-in CSS vendor prefixing. Very fast, minimal and efficient...
    Downloads: 1 This Week
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    eProcurement Software

    Enterprises and companies seeking a solution to manage all their procurement operations and processes

    eBuyerAssist by Eyvo is a cloud-based procurement solution designed for businesses of all sizes and industries. Fully modular and scalable, it streamlines the entire procurement lifecycle—from requisition to fulfillment. The platform includes powerful tools for strategic sourcing, supplier management, warehouse operations, and contract oversight. Additional modules cover purchase orders, approval workflows, inventory and asset management, customer orders, budget control, cost accounting, invoice matching, vendor credit checks, and risk analysis. eBuyerAssist centralizes all procurement functions into a single, easy-to-use system—improving visibility, control, and efficiency across your organization. Whether you're aiming to reduce costs, enhance compliance, or align procurement with broader business goals, eBuyerAssist helps you get there faster, smarter, and with measurable results.
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  • 10
    Google Spreadsheets Python

    Google Spreadsheets Python

    Google Sheets Python API

    gspread is a Python API for Google Sheets. A service account is a special type of Google account intended to represent a non-human user that needs to authenticate and be authorized to access data in Google APIs [sic]. Since it’s a separate account, by default it does not have access to any spreadsheet until you share it with this account. Just like any other Google account. To access spreadsheets via Google Sheets API you need to authenticate and authorize your application. Older versions of...
    Downloads: 0 This Week
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  • 11
    Apache OpenOffice

    Apache OpenOffice

    The free and Open Source productivity suite

    Free alternative for Office productivity tools: Apache OpenOffice - formerly known as OpenOffice.org - is an open-source office productivity software suite containing word processor, spreadsheet, presentation, graphics, formula editor, and database management applications. OpenOffice is available in many languages, works on all common computers, stores data in ODF - the international open standard format - and is able to read and write files in other formats, included the format used by the most common office suite packages. ...
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    Downloads: 320,031 This Week
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  • 12
    Excel Writer

    Excel Writer

    A standalone, portable Ada package for producing Excel spreadsheets

    Excel_Out is a standalone, portable Ada package for writing Excel spreadsheets with basic formattings and formulas, easily and programmatically. Enables the automatic production of reports. No interaction needed with Excel or MS Office. More information on: http://excel-writer.sf.net Alire crate: https://alire.ada.dev/crates/excel_writer Mirror: https://github.com/zertovitch/excel-writer
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    Downloads: 21 This Week
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  • 13
    OpenL Tablets
    OpenL Tablets is a business rules management system based on tables presented in Excel documents. Providing business-oriented approach, OpenL Tablets treats business documents containing business logic specifications as executable rules. In a very simplified view, OpenL Tablets extracts rule tables from Excel documents and executes them. The rules can be accessible from different applications. OpenL Tablets tools check all data, syntax and type errors in order to avoid any user...
    Downloads: 0 This Week
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  • 14

    SimpleXlsxWriter

    C++ library for creating XLSX files for MS Excel 2007 and above.

    This library represents XLSX files writer for Microsoft Excel 2007 and above. The main feature of this library is that it uses C++ standard file streams. On the one hand it results in almost unnoticeable memory and CPU resources consumption while processing (that may be very useful at saving a large data arrays), but on the other hand it makes unfeasible to edit data that were written. Hence, if using this library the structure of the future report should be known enough. The library...
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    Downloads: 7 This Week
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  • 15

    OpenOffice.org Utility Library

    Library modules for creating ODF documents.

    OpenOffice.org Utility Library modules for creating Open Document Format (ODF) documents which can be read by Office Suites including OpenOffice.org, LibreOffice.org, and Microsoft Office. Currently, ooolib-python can create Calc spreadsheet ODS documents. These documents include many features including: - Create multiple table spreadsheets - Cells with text, numbers, dates, formulas - Ability to use built-in styles - Ability to create automatic styles (ie. bold, italics,...
    Downloads: 0 This Week
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  • 16
    x-spreadsheet

    x-spreadsheet

    A web-based JavaScript (canvas) spreadsheet

    This is a lightweight Excel development library built on Web(es6) canvas. These parameters are loaded in the first instantiation, and can also be set later, but it is recommended to modify and load in advance the changes that you need to change. You can adjust the number of columns displayed by default len, AZ, the default width of each column, the default width widthof the left sequence column indexWidth, and the default minimum width of each columnminWidth. You can adjust the style of...
    Downloads: 0 This Week
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  • 17
    EtherCalc

    EtherCalc

    Open source web spreadsheet

    EtherCalc is an open source, web-based spreadsheet that allows multiple users to collaborate and work remotely and in real time. Users can edit the same spreadsheet at the same time, with changes instantly reflected on screen. It accepts various mathematical formulae and other functions, and supports several default text formatting directives as well.
    Downloads: 12 This Week
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  • 18
    stylefmt

    stylefmt

    stylefmt is a tool that automatically formats stylesheets

    stylefmt is a tool that automatically formats CSS according to stylelint rules. stylefmt'd code is easier to write. Never worry about minor formatting concerns while hacking away. Easier to read, when all code looks the same you need not mentally convert others' formatting style into something you can understand. Easier to maintain, mechanical changes to the source don't cause unrelated changes to the file's formatting; diffs show only the real changes. Uncontroversial, never have a debate...
    Downloads: 0 This Week
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  • 19
    An Excel that creates a powerpoint presentation of nicely formatted slides from the rows in a spreadsheet. Create your own ttemplates to include any fields from the spreadsheet customize your layout. More info on Tiran: http://tirandagan.com
    Downloads: 1 This Week
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  • 20

    Stock ReturnAnalysis

    Java program that uses Monte Carlo

    This program uses the Monte Carlo simulation to calculate the stock returns .It uses the historical data .
    Downloads: 0 This Week
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  • 21

    GnuCash Export Modifier

    Perl utility that modifies GnuCash Trasnaction Exports

    This Perl utility script will allow you to quick strip the split or utility file and display transaction month and year information. It is intended simply to save time when uploading using that export in any spreadsheet tool to perform analysis.
    Downloads: 0 This Week
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  • 22
    ZK Spreadsheet is an open source embeddable web-based online spreadsheet that delivers the rich functionality of Excel within browsers using pure Java. (Moved to http://code.google.com/p/zkspreadsheet/ since ZK Spreadsheet 2.0)
    Downloads: 2 This Week
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  • 23
    XLS/Loader
    XLS/Loader is an easy to use, Java based GUI application that brings your Excel worksheets, when structured as simple table, fast and easily in your RDBMS (supports Oracle, MySQL, PostgreSQL). Requires at least JRE5.
    Downloads: 4 This Week
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  • 24
    FIX Agora

    FIX Agora

    OTC Trading Network

    ...The FIX protocol is an industry driven standard for the electronic communication of trade related messages, released and maintained by FIX Protocol, Ltd. FIX Agora is a 100% Java open source implementation running on Windows, Linux/UNIX and Mac OS (client only). It requires Oracle® JRE version of 1.6 or higher.
    Downloads: 0 This Week
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  • 25

    PalOOCa OpenOffice Extension for Palo

    palo olap open office calc plugin for data analysis

    ...It provides an extension for OpenOffice.org Calc which allows both, read and write, access to data from within the Jedox OLAP Server via Calc. If used together with the Open Source Jedox/Palo OLAP Server it completes the Open Source MOLAP-Stack for Business Intelligence. Additionally to Jedox OLAP it is also (read-only) compatible to (almost) all OLAP servers supporting XMLA. Intended audiences are: - scientific research & teaching - financial analysis & controlling Consult the FAQ in the Wiki.
    Downloads: 1 This Week
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