Formula Manager for Excel

Formula Foundry is a spreadsheet formula editor add-on for Google Sheets and Microsoft Excel. It opens long formulas in a multiline editor with syntax highlighting, auto-indentation, error checking, multiple tabs, and dark mode, providing a code-editor-style workspace alongside the spreadsheet. Users can define reusable global variables to replace repeated constants and save formulas in a snippet library. The Business plan supports sharing snippets with a team. An AI assistant can generate formulas from plain-language requests, explain formulas, and help diagnose errors. A formula translator converts between Excel and Google Sheets syntax and flags functions that may not translate. Formula Foundry is designed for spreadsheet users and analysts working with complex or frequently reused formulas, including people in data, finance, operations, and marketing. It is offered for Google Sheets and Microsoft Excel, with a free plan and paid options for individual and team use.

GridCraft is an open-source spreadsheet application for creating, editing, calculating, and analyzing workbooks on desktop or in a browser. Its interface includes a ribbon, formula bar, and sheet tabs, with tools for formulas, dynamic arrays, tables, sorting, filtering, data validation, conditional formatting, charts, and PivotTables. It supports XLSX, CSV, and TSV workbooks, with comments, hyperlinks, print settings, and PDF output. Users can build budgets, schedules, sales summaries, and other data tables, then calculate and visualize results in a workbook. Desktop releases are available for Windows, macOS, and Linux; a WebAssembly build can be hosted on a static server. A command-line tool, JSON control channel, and Model Context Protocol server let developers and AI agents inspect, edit, calculate, and format workbooks programmatically. GridCraft is free, open-source software, and its maintainers currently describe the project as pre-alpha.