Free JavaScript Charting Library ProEssentialsJS Permits Commercial Use. Highcharts, SciChart and LightningChart Free Tiers Comparison

DALLAS - Sept. 2, 2026 - PRLog -- Gigasoft publishes the complete Gigasoft Standard License Agreement 11.0 for ProEssentialsJS, its JavaScript charting library, and makes it free for commercial use by any organization below USD 250,000 in annual gross revenue, redistribution included. The complete JavaScript charting agreement, including the terms for free use, is published on its site.

ProEssentialsJS free means free. No watermark. No feature gates. No expiry. No reduced feature set. It is the same engine a paying customer gets. There is no license key, no activation, no domain locking, no registration, and nothing in the package contacts Gigasoft at build time or run time.

Highcharts is licensed CC Attribution-NonCommercial. SciChart's Community edition watermarks every chart and requires an update every six months or the application stops working. LightningChart's free tier watermarks every chart, and its separate student license expires after a year. None of the three permits commercial work without paying. Highcharts, SciChart, LightningChart and ProEssentialsJS free-use terms are compared on one page.

An individual may use ProEssentialsJS for personal projects, study, hobbies or research, with no revenue test. Accredited schools, colleges and universities, together with their students and faculty, may use it free for coursework and academic research regardless of the institution's size. Anyone may build and sell a course, tutorial or book about it.

Underneath the JavaScript API is a desktop engine. ProEssentials ported its native C++ charting engine to WebAssembly while preserving its core native rendering concepts: GPU compute shaders feed each other without returning to the CPU, and a zero-copy path hands the chart a pointer straight into the WebAssembly heap. Nobody renders JavaScript charts at the state of the art quite like ProEssentialsJS.

Do not take our word for any of it. The complete JavaScript chart resource on install, licensing, demos, comparisons, documentation, AI assistance, localization and UX. The detailed JS chart performance comparison is published along with its methodology. A detailed WASM/WebAssembly chart comparison is also published. Live charting demos run in your browser with the code beside each one. Hand these pages to your favorite AI and let it check every claim.

About Gigasoft, Inc.: Gigasoft has built charting components since 1995 and has served roughly 6,500 customers, including NASA, NASA JPL, Rockwell, Emerson Process, ABB, Siemens and Halliburton. ProEssentials runs on WinUI, WPF, WinForms, MFC, Delphi, ActiveX and in the browser. Support is free and unlimited for the life of the version, at every tier, including the free one.

Photo:
https://www.prlog.org/13168346/1