OnlyOffice

OnlyOffice is an open-source office suite with a capable presentation editor that reads and writes PowerPoint files faithfully. Slides, animations, and transitions mostly survive the round trip, which makes it a practical alternative for teams that need PowerPoint compatibility without Microsoft's price.

Key Features

Open-source office suite with presentations
Full PowerPoint compatibility
Real-time collaboration in the browser
Self-hosting option for data control
AI plugin support
Integrates with Nextcloud, ownCloud, and more

Pricing

Plan	Price	Details
Free	$0	Free Desktop Editors and limited cloud use.
Cloud	$6/user/mo	Hosted Docs with collaboration; billed annually.
Enterprise	Custom	Self-hosted with support and SLAs; contact sales.

Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.

Best for: teams that want a compatible, affordable office suite they can self-host.
Popular with: Business Owners, Developers, Teachers

How it works

The suite runs in the browser with real-time collaboration, or self-hosted for full data control, and integrates with Nextcloud, ownCloud, and other platforms. AI plugins add drafting and summarising features.

A free plan is available, and the hosted cloud version starts at $6 per user per month on annual billing. OnlyOffice is a good fit for teams that want an affordable, compatible office suite, though its feature set is smaller than PowerPoint's.

Key Features

Pricing

How it works

Pros and Cons

✓ Pros

✗ Cons

Related Tools

Gamma

Beautiful.ai

SlidesAI