---
title: "Open Web Calendar"
pageType: "tool-profile"
schemaVersion: "1.0"
snapshotId: "tv-20260915-f4c107995a2e"
generatedAt: "2026-09-15T07:02:20.000Z"
canonicalUrl: "https://toolvitals.com/tools/open-web-calendar/"
jsonUrl: "https://toolvitals.com/api/agent/tools/open-web-calendar"
indexable: true
---

# Open Web Calendar

Customizable web calendar embed for websites using ICal source links.

## Decision context

- Status: warning
- ToolVitals score: 60/100
- Health score: 68/100
- Shipping score: 48/100
- Score mode: verdict
- Data confidence: 90/100
- Source coverage: 100/100
- Last evidence check: 2026-09-15

## Classification

- Use case: Personal Productivity (personal-productivity)
- Category: Productivity (productivity)
- Tool mode: Source-visible project
- Openness: OSI-approved OSS
- License: GPL-2.0
- Tags: calendar, scheduling, embed, productivity, open-source, giscus, hacktoberfest, icalendar, ics, iframe, rfc5455, web-calendar, caldav

## Public repository signals

- Repository: [niccokunzmann/open-web-calendar](https://github.com/niccokunzmann/open-web-calendar)
- Stars: 330 (adoption context only)
- Forks: 95
- Open issues: 153
- Last commit date: 2026-09-10
- Releases in 90 days: 0

## Source receipts

- [Official website](https://open-web-calendar.quelltext.eu/) — checked 2026-09-15
- [Source repository](https://github.com/niccokunzmann/open-web-calendar) — checked 2026-09-15

## Discovery status

- Search indexable: yes
- Reason: sufficient tool evidence

## Interpretation limits

- ToolVitals scores summarize bounded public maintenance, shipping, openness, and evidence signals. They are not user-review ratings.
- GitHub stars and related popularity metrics are adoption context, not quality evidence.
- Missing values mean not collected or not confidently established; they do not mean zero.
- Public signals do not prove security, uptime, support quality, customer satisfaction, or production suitability.
- Verify material decisions against the linked first-party sources and your own requirements.