head to head · open source
Mermaid vs EventViewerX
Mermaid has 90,293 GitHub stars, 9,266 forks, 1,781 open issues and last shipped 3 days ago. EventViewerX has 731 stars, 69 forks, 19 open issues and last shipped 5 days ago. Mermaid leads on adoption by 12,252% (90,293 vs 731 stars). Mermaid is written in TypeScript under MIT; EventViewerX is written in C# under MIT. Mermaid has attracted 10% as many forks as stars, EventViewerX 9%. Mermaid was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Mermaid | EventViewerX | |
|---|---|---|
| GitHub stars | ★ 90K | ★ 731 |
| License | MIT | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-09-15 | 2026-09-13 |
| Forks | ⑂ 9.3K | ⑂ 69 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mermaid if
- You weight community size — 90K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick EventViewerX if
- You want the EventViewerX feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and EventViewerX fits your workflow better
About Mermaid
Mermaid is a JavaScript based diagramming tool that renders diagrams from Markdown like text definitions. It lives in the JavaScript/TypeScript ecosystem and operates both in the browser and in Node.js environments. The project’s core purpose is to eliminate the gap between software development and documentation by letting developers write diagrams alongside code, avoiding the rot and overhead of manual diagram maintenance.
read the full Mermaid overview →
About EventViewerX
EventViewerX is an MIT licensed C engine with a thin PowerShell surface called PSEventViewer that queries, reports on, exports, and automates Windows Event Log data from live channels, remote sessions, Windows Event Collector subscriptions, provider messages, and saved EVTX files, and it is aimed at Windows and PowerShell administrators, .NET developers, and teams doing Active Directory event reporting.
read the full EventViewerX overview →
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Frequently asked questions
Is Mermaid or EventViewerX more popular?
Mermaid has 90,293 GitHub stars and EventViewerX has 731. Mermaid has the larger community by that measure.
Are Mermaid and EventViewerX free?
Both are open source. Mermaid is licensed under MIT and EventViewerX under MIT. Neither carries a licence fee.
What is the difference between Mermaid and EventViewerX?
Mermaid is written in TypeScript and EventViewerX in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Mermaid or EventViewerX?
Choose Mermaid if you want the larger community (90,293 stars) or its MIT licence terms. Choose EventViewerX if its feature set, stack or MIT licence fits better. Both are self-hostable.