Create Microsoft Project plans by chatting with ChatGPT in your browser
Project Plan 365 Assistant is an obsolete, officially deprecated Chrome extension that is actively being retired by Housatonic Software in favor of newer plugins.
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, Project Plan 365 Assistant (chromewebstore.google.com) is an AI platform indexed under AI Assistant generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Freemium pricing model. Top competing alternatives by monthly volume include Monica (4.51M visits/mo), Quila (1.09K visits/mo), Sider (2.64M visits/mo).
Totally dead extension, stop downloading it.
Official notice says it's being retired, and it barely works anyway.
Broken sync.
Outdated and abandoned by the publisher.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Describe a project in natural language to ChatGPT and have it drafted into a structured plan with tasks, milestones, resources and dependencies.
Export generated plans to a Microsoft Project-compatible MPP format that preserves task dependencies, timelines and resources.
Open plans online in Project Plan 365 to view free Gantt charts, fine-tune tasks and share with stakeholders.
Customize tasks, milestones and resource allocations within Project Plan 365 or Microsoft Project after generation.
Project Plan 365 Assistant is a Chrome extension from Housatonic Software, the maker of Project Plan 365, that bridges ChatGPT and Microsoft Project-style planning. The idea is to remove the friction of building a plan from a blank template: instead, you hold a natural-language conversation with ChatGPT, describe the project you want, and let the extension turn that conversation into a structured plan.
Once ChatGPT has produced the project, the extension lets you open it online in Project Plan 365 to view it in a free Gantt chart, refine tasks, milestones and resource allocations, and share it with teammates, or download it as a Microsoft Project-compatible MPP file. Because it targets the MPP format, the resulting plan can be continued in Microsoft Project or Project Plan 365 without losing task dependencies, timelines or resources.
Housatonic Software's store listing notes that this particular extension is being retired in favour of a newer Project Plan 365 ChatGPT Plugin, but the extension remains published and installable. The wider Project Plan 365 product family is actively maintained, with tiered subscription plans (Standard, Business and enterprise options) for its desktop, web and mobile apps.
Project managers draft a full plan, tasks, milestones and resources by describing the project to ChatGPT.
Teams convert AI-generated plans into MPP files to keep working in Microsoft Project or Project Plan 365.
Anyone can open a generated plan online in Project Plan 365 for a free Gantt chart view and share it with stakeholders.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Project Plan 365 Assistant | 0 | — | — | Freemium | Current |
| 1 | Monica | 4.51M | -11.3% | 55% direct | Freemium | vs Monica |
| 2 | Quila | 1.09K | +2.2% | 35% direct | Freemium, Free Trial | vs Quila |
| 3 | Sider | 2.64M | -10.6% | 64% direct | Freemium | vs Sider |
| 4 | GanttChart.AI | 7.85K | -40.2% | 40% direct | Freemium | vs GanttChart.AI |
| 5 | Chat4Data | 32.85K | -33.3% | 41% direct | Freemium | vs Chat4Data |
| 6 | Crafter | 510 | -71.8% | 43% direct | Freemium, Contact for Pricing | vs Crafter |
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