Tags
Business Software
Business Software open-source alternatives curated by the directory.
Business Software
Use the same directory search, ordering, and pagination controls inside this collection.
185 of 185 tools
ONLYOFFICE Docs
AGPL-3.0
Open-source online editor for documents, spreadsheets, presentations, and PDFs. Features real-time collaboration, AI integration, and accessibility tools.
Quiet
GPL-3.0
Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata leaks.
Rocket.Chat
Unknown
Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Stoat
Unknown
Self-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.
Sync-in
AGPL-3.0
Secure, open-source platform for file storage, sharing, and collaboration. Host your data on your own infrastructure with full control and transparency.
Teable
AGPL-3.0
Open-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.
Tldraw
Unknown
Virtual whiteboard that works instantly on any device, no signup required, with real-time multiplayer collaboration built in.
Twake Chat
AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.
UnInbox
Unknown
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.
Wire
GPL-3.0
A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.
Workadventure
Unknown
Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.
Zulip
Apache-2.0
Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.
Cal.com
MIT
Cal.diy is the community edition of Cal.com for personal self-hosting, with calendar sync, video conferencing, payment support, and a REST API.
Chobble Tickets
Unknown
Event ticketing platform with flat £50/year fee, no commission or booking charges. Open source, encrypted, self-hostable with unlimited events and tickets.
Easy!Appointments
GPL-3.0
Self-hosted appointment scheduling solution with Google Calendar sync, customizable workflows, and no monthly fees. Perfect for healthcare, salons, and service businesses.
Hi.Events
Unknown
Hi.Events is a comprehensive platform for event management and online ticket sales, offering features like QR code check-in, custom ticket types, and embeddable widgets.
Rallly
AGPL-3.0
A user-friendly, open-source tool for coordinating events and meetings without the hassle of back-and-forth emails or messages.
Documenso
AGPL-3.0
Streamline your document workflows with a powerful, privacy-focused e-signature platform that puts you in control of your data.
Docuseal
AGPL-3.0
DocuSeal is an open source e-signature platform that provides fast, easy document signing with developer-friendly API integration.
OpenSign
AGPL-3.0
A powerful, open-source e-signature solution offering customization, integration, and enhanced security for businesses of all sizes.
Paperless-home
GPL-3.0
A powerful open-source solution for managing, organizing, and searching your digital documents with ease and efficiency.
Papermark
AGPL-3.0
Secure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.
Papra
AGPL-3.0
A document management platform that helps you archive, organize, and search files with email ingestion, tagging capabilities, and powerful search functionality.
Seafile
Unknown
Open source file sync and sharing platform with custom properties, AI automation, collaborative editing, and enterprise-grade security for teams.























