The top-rated alternative to Microsoft 365 Copilot is WPS Office, which has a free version. People also recommend LibreOffice, ONLYOFFICE, Apache OpenOffice and CryptPad. Office Suites like Microsoft 365 Copilot are a crowded field, with more than 50 alternatives for Windows, the web, Android, Mac and Linux.
SmartOffice is a lightweight and easy-to-use mobile document productivity suite available as an SDK or as a mobile app. View, edit, create, print, present and share Microsoft Office and PDF documents via your mobile device.
United States
Private browser office suite combining document, spreadsheet, presentation, project, PDF, and note tools. It offers AI assistance, local browser processing, common file exports, PWA installation, bilingual support, and free cross-device access.
Brazil
Custom-domain business email combines webmail with standard IMAP, SMTP, JMAP, CalDAV, and CardDAV clients. It includes shared inboxes, calendars, contacts, newsletters, booking pages, catch-all addresses, filtering, an AI assistant, REST API, webhooks, SDKs, and MCP support.
Portugal
EU
FranceEU
Generates individualized email replies in your writing style from imported messages without inbox access, supports screenshots, briefs, translation in 60+ languages, encrypted storage, business terms panel, tone controls, templates, spell check, and more.
IrelandEU
Open-source AI assistant that lives natively inside Excel, Word, and PowerPoint to read, edit, format, and generate charts in live documents.
Bolivia
An offline-first office suite for editing documents, spreadsheets, PDFs and images directly on your device.
United States
Truly Office Software is the #1 office productivity suite suitable for PC and mobile devices. It is a high-performing, multi-device that is considerably price friendly than alternatives. Truly Office is fully compatible and comparable to Microsoft PowerPoint, Excel and Word.
Office EU is a 100% European office suite with email, documents, calendar, and cloud storage. Open-source, GDPR-compliant, and free from foreign jurisdiction.
NetherlandsEU
Guidy is an AI desktop assistant for Windows and Mac that provides real-time, on-screen guidance inside any software, application, or website the user has open. It runs as a lightweight app that sits on the desktop and activates only when the user asks for help.
BulgariaEU
AI-first, open-source office app for documents, spreadsheets, presentations, and PDFs—with desktop and browser editing, plus TypeScript and Go APIs.
Run your favorite and local LLMs in Microsoft Word — right on your computer. GPTLocalhost lets you use the latest AI models locally, ensuring complete data privacy, zero monthly fees, and effortless switching between models anytime.
