Open source chart projects
Every project in the registry tagged chart, ranked by real GitHub adoption.
Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets
Database Reporting Tool and Tasks (.Net)
Privacy-friendly web analytics for data-driven decisions
Frequently asked questions
How many open source chart projects are there?
This registry tracks 3 projects tagged chart, with 22,684 GitHub stars between them. The most-adopted is excelize at 20,918 stars.
Are these chart projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which chart project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these chart projects still maintained?
2 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.