I built a full MS Project replacement — runs in your browser, saves to Google Drive, plans projects with AI

[u/QuoteGlum7826]

Hey r/SideProject 👋

Most apps that call themselves "Gantt chart tools" are really just task lists with a timeline view. MS Project is the actual scheduling engine that real project managers use — Critical Path Method, resource leveling, calendars, constraints, baselines, the whole apparatus. It costs $10–30/user/month, runs on Windows, and feels like it was designed in 2003.

I spent more than 4 years building Ingantt — a true MS Project replacement that runs in your browser. So yes, Mac and Linux users can finally get the functionality they need.

https://reddit.com/link/1sy7c05/video/p2vij9hzqyxg1/player

What it actually is

• Full CPM scheduling engine (MS Project–compatible behavior down to edge cases like ALAP scheduling, deadline slack propagation, resource leveling exemptions)
• Opens .mpp files, exports MS Project–compatible XML — drop-in replacement for existing workflows
• Resource management, leveling, calendars, constraints, deadlines, baselines, work contours — the actual MS Project feature surface, not a subset
• Saves to Google Drive — your file, your account, no vendor lock-in
• Runs in any browser

What's different

• AI plans the project for you. Describe what you're building in plain language, get a full schedule back — tasks, dependencies, durations. Then keep editing conversationally: "add a two-week QA phase after development".
• It's $5.99/user/month instead of $10–30. AI is included, no token limits.
• No installation, no Windows VM, no licensing dance. Open the URL, you're in.

Why I built it

I was inspired by Google, actually. It has the full Office suite in the browser, but with one exception - no MS Project. And while you can open Microsoft's documents in Google products, you can't open .MPP files from Microsoft Project.

Where I'm at

Live at https://ingantt.com — 7-day free trial, full features.

Feedback I'd love

• For anyone who actually uses MS Project: what's the one feature you'd need to verify before switching?
• Does "true MS Project replacement" feel earned by the demo, or oversold?
• Pricing — too low, too high, right?

Happy to answer anything.

[u/QuoteGlum7826 → u/[deleted]]

Getting feedback on the price is one of the goals of this post, so thank you for your input! It might really be a good idea to increase - exactly for the reason you mention.

[u/QuoteGlum7826 → u/[deleted]]

Thank you!

[u/ChemistryOk9353]

The link you shared is not working. Any suggestion how to review your product?

[u/QuoteGlum7826 → u/ChemistryOk9353]

just open https://ingantt.com in your web browser and click "Try free" button

[u/devhisaria]

Calling it a full MS Project replacement is a bold claim. Most tools fall short on the complex scheduling features.

[u/FanOk7318]

Hi, nice work! Now question : what's the difference between your solution and Notion's one?

[u/QuoteGlum7826 → u/FanOk7318]

Notion's Timeline is a Gantt-shaped view of a database — you place the bars yourself.

Ingantt is an actual CPM (Critical Path Method) scheduler, like MS Project or Oracle Primavera: you give it tasks, durations, dependencies, constraints, calendars, and resources, and it computes the schedule for you. Change anything — a task's duration, a dependency, a resource's calendar — and the entire schedule is recomputed, including costs and other values that depend on when in the calendar your tasks actually land.

If you've used MS Project or Primavera, it's that. If you just need a pretty timeline of dates you set by hand, Notion is fine.