How icalendar is used
icalendar joined the catalog on its public numbers (1,994,367 downloads a week on PyPI and 1,185 GitHub stars), not on our project count: it is a dependency in 12 public GitHub projects of our scan, 5 of them set up for AI coding agents. Projects that use it most often also use python-dotenv (91.7%), Pydantic (58.3%), Uvicorn (58.3%).
icalendar popularity over time
Gid Score 42: downloads 70, use in agent projects 20, GitHub stars 14, downloads trend 59 (each 0-100). How it is calculated.
Often used with icalendar
| python-dotenv | 91.7% of icalendar projects · 10.0× more than average |
|---|---|
| Pydantic | 58.3% of icalendar projects · 6.8× more than average |
| Uvicorn | 58.3% of icalendar projects · 7.6× more than average |
| aiohttp | 58.3% of icalendar projects · 28.3× more than average |
| Beautiful Soup | 58.3% of icalendar projects · 27.0× more than average |
| OpenAI Python Library | 58.3% of icalendar projects · 14.8× more than average |
| Pillow | 58.3% of icalendar projects · 15.2× more than average |
| FastAPI | 50.0% of icalendar projects · 6.7× more than average |
How icalendar is funded
Open Collective: icalendar
| Received, last 12 months | $10 Oct 2025 – Sep 2026 |
|---|---|
| Estimated annual budget | $12 Open Collective's estimate |
| Balance | $113 |
| Raised since the start | $193 · $80 paid out |
| Typical month median, last 12 months | $0 |
| Contributors, last 12 months | 1 |
Top company backers all time
| Trash Nothing | $24 since Sep 2025 |
|---|
Dec 2024Sep 2026
Money by month. First money received in Dec 2024. The typical month is the median: one big one-off donation does not move it.
USD after payment processor fees, as Open Collective reports it; fiscal host Open Source Collective. Source
Ways to fund icalendar
Open Collective
As the maintainers list them in FUNDING.yml on GitHub. Checked Oct 20, 2026.
Install
| Package | pip install icalendar |
|---|---|
| Main stacks | Python (11), React Native / Expo (1) |
| Example projects | microsoft/spec-to-agents, XargonWan/Synthetic_Heart, breatheco-de/apiv2, exlab-code/digikal |
Alternatives to icalendar
In our scan, none of the most used tools in Utilities does the same job as icalendar: they are add-ons, companions or tools for a different task.
More in Utilities: clsx date-fns PyYAML uuid yaml js-yaml glob Lodash