OpenCharts vs Presenton
OpenCharts
opencharts.comPresenton
presenton.aiSide by side
| Figure | OpenCharts | Presenton |
|---|---|---|
| Price from | $9.99/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 2 |
| Spec score · AI Presentation Makers | 9.1 (#4) | 8.8 (#13) |
| Spec score · Presentation software | 8.9 (#13) | 8.6 (#23) |
| Spec score · AI Presentation Software | 8.7 (#17) | 8.3 (#39) |
| Compliance | OpenCharts says it uses GDPR-aligned data handling and is working toward SOC 2 Type II and ISO 27001 certification. | The security page says not to infer a compliance certification and advises contacting Presenton for current security and compliance documentation. |
| Free plan | Yes | Yes |
| Integrations | Listed connectors include Stripe, HubSpot, Slack, Google Sheets, Discord, Airtable, Calendly, Apollo, Typeform, Monday, Gmail, Notion, GitHub, Linear, and others. | The API supports REST requests, asynchronous jobs, webhooks, and scoped iframe embedding. |
| PowerPoint export | Yes | Yes |
Plans
OpenCharts
- Free ForeverFree
- Starter$9.99 a month
- Pro$24.99 a month
- Teams$14.99 a month
In their own words
OpenCharts
OpenCharts is an AI workspace for flowcharts, presentations, notes, code, video, and agents. Theo AI can create these materials from plain-language descriptions. Flowcharts use terminal, process, decision, and data nodes on an infinite canvas, with automatic layout and export tools. The presentation editor supports editable slides, speaker notes, transitions, AI generation, rehearsal coaching, web publishing, and PPTX export. Theo Agents can start on schedules, webhooks, monitoring triggers, or manually; they can use external connectors, human approval gates, and produce deliverables. Connectors include Stripe, HubSpot, Slack, Google Sheets, Discord, Notion, GitHub, and others. A REST API manages project types, and the Theo MCP server provides 113 tools and five readable resources. Each account starts with 10 GB of Drive storage, including Free Forever. That plan costs nothing and includes 500K AI credits and one of each project type. Starter costs $9.99 a month, Pro $24.99 a month, and Teams $14.99 a month with a three-user minimum. OpenCharts says it does not use customer data to train or fine-tune AI models.
Presenton
Presenton generates editable PPTX and PDF presentations from prompts, documents, and data. Users can edit slides on a canvas or refine them with chat-based AI editing. An existing PPTX can become a reusable design system preserving colors, typography, spacing, and layout rules. The Cloud v3 API accepts prompts, files, URLs, Markdown, JSON, and slide-specific content, and exports PPTX, PDF, and PNG. It supports REST requests, asynchronous jobs, webhooks, and scoped iframe embedding. Self-hosted deployments can use OpenAI-compatible endpoints or local models through Ollama. The desktop application is described as free on Windows, macOS, and Linux with no usage limits; self-hosted/open-source use is free under Apache 2.0. Each generated slide uses one credit. Enterprise deployments can run in customer-controlled cloud, VPC, on-premises, or air-gapped environments, with added access, audit, networking, retention, and support options.